Adjustable bent bone cement filler

Abstract

The utility model relates to an adjustable bent bone cement filler which comprises a sleeve, an injection hole and a threading hole are formed in the sleeve, and a traction wire is arranged in the threading hole. The upper end of the bent pipe is fixedly connected with the lower end of the sleeve, and the lower end of the bent pipe is provided with a fixed pipe connected with the lower end of the traction wire; the handle is fixedly arranged at the upper end of the sleeve, a bone cement injection opening is formed in the handle, and the injection hole is connected with the bone cement injection opening; the sliding block is movably arranged on a handle, and the sliding block is connected with the upper end of the traction wire; and the sliding block pulls the traction wire upwards, so that the lower end of the traction wire pulls the fixed pipe, and the bent pipe is driven to deform from a bent shape to a straight shape. The bent pipe can be adjusted to different angles through the sliding block on the handle, so that bone cement can be conveniently filled into the cavity in a short time, and the postoperative risk is reduced.

Description

Technical Field

[0001] The utility model relates to medical equipment, in particular to an adjustable curved bone cement filler. Background Art

[0002] During the percutaneous kyphoplasty (PKP) procedure, vertebroplasty kits are often used. Vertebroplasty kits are essential disposable consumables in vertebroplasty. Vertebroplasty kits usually include vertebral puncture needles, dilator components, bone cement fillers, hand drills, and guide wires. In addition to the above accessories, kyphoplasty also includes a pressure pump and a balloon dilatation catheter, and bone cement is used to fill the diseased vertebra.

[0003] At present, PKP surgery is more common, and most of the instruments used are straight. Under the guidance of X-ray images, the puncture needle is percutaneously punctured into the diseased vertebra, a working channel is established through the dilator, and the curved balloon dilation catheter is inserted along the working channel to the location of the vertebral lesion. A pressure pump is used to expand and compact the cancellous bone in a directional manner. Because the bone cement solidifies in a short time and the cannula of the bone cement filler is vertical, such as Figure 1 As shown in the figure, the sleeve of the bone cement filler is a straight tube, and the bone cement cannot fill the cavity completely in a short time, further increasing the possibility of postoperative risks. If a bone cement pressure device is used to fill bone cement, the possibility of bone cement leakage may increase, thereby increasing the risk of postoperative complications in patients. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an adjustable curved bone cement filler to solve the problem that the existing bone cement filler is vertical in shape, resulting in the inability to fully fill the cavity with bone cement in a short time during filling, further increasing the postoperative risk.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] Provided is an adjustable curved bone cement filler, comprising:

[0007] A casing, wherein an injection hole and a wire threading hole are provided in the casing, and a traction wire is arranged in the wire threading hole;

[0008] A bending tube, the upper end of which is fixedly connected to the lower end of the sleeve, and the lower end of which is provided with a fixed tube, and the lower end of the traction wire is connected to the fixed tube;

[0009] A handle is fixedly provided on the upper end of the sleeve, a bone cement injection port is provided on the handle, and the injection hole is connected to the bone cement injection port;

[0010] A slider is provided on the handle for movement, and the slider is connected to the upper end of the traction wire;

[0011] The slider pulls the traction wire upwards, so that the lower end of the traction wire pulls the fixed tube, thereby driving the bending tube to deform from a curved shape to a straight shape.

[0012] Furthermore, a connecting rod mechanism is provided between the traction wire and the fixing tube, and the connecting rod mechanism includes

[0013] A lower shaft seat is fixedly arranged on the inner wall of the fixed tube;

[0014] The connecting rod has a lower end that is rotatably connected to the lower shaft seat via a pin shaft, and an upper end that is connected to the traction wire.

[0015] Furthermore, the lower end of the traction wire is fixed to the upper shaft seat, and the upper end of the connecting rod is rotatably connected to the upper shaft seat via the distribution shaft.

[0016] Furthermore, the upper and lower ends of the connecting rod are bent so that the connecting rod forms a C-shaped structure.

[0017] Furthermore, a slide groove is provided on the handle, and a slide rail is formed in the slide groove;

[0018] The slider is arranged in the slide groove, a guide groove is provided on the slider, and the guide groove cooperates with the slide rail to guide the slider to move in the slide groove.

[0019] Furthermore, the bending tube is a spring tube.

[0020] The beneficial effects of the utility model are:

[0021] The adjustable curved bone cement filler of the utility model can adjust the curved tube to different angles through the slider on the handle, so as to facilitate filling the bone cement into the cavity in a short time and reduce the postoperative risk.

[0022] During surgery, the adjustable curved bone cement filler only requires unilateral injection of bone cement, and the bone cement filling effect is achieved through handle adjustment, which greatly saves costs and reduces possible harm to patients after surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of a conventional non-adjustable curved bone cement filler;

[0025] Figure 2 It is a schematic diagram of the utility model adjustable curved bone cement filler;

[0026] Figure 3 yes Figure 2 Middle AA section view;

[0027] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0028] Among them, 1, casing, 11, injection hole, 12, threading hole;

[0029] 2. handle, 21. slider;

[0030] 3. Traction wire;

[0031] 4. Bending pipe;

[0032] 5. Fixed pipe;

[0033] 6. Connecting rod, 61. Lower shaft seat, 62. Upper shaft seat, 63. Pin shaft. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] The present application provides an adjustable curved bone cement filler, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0036] In order to solve the technical problem that the bone cement filler in the prior art is vertical, so that the bone cement cannot fill the cavity fully in a short time during filling, further increasing the postoperative risk, an embodiment of the present application provides an adjustable curved bone cement filler, which is described in detail below.

[0037] like Figures 2 to 4 As shown, an adjustable curved bone cement filler comprises

[0038] A casing 1, wherein an injection hole 11 and a threading hole 12 are provided in the casing 1, and a traction wire 3 is arranged in the threading hole 12;

[0039] A bending tube 4, the upper end of which is fixedly connected to the lower end of the sleeve 1, and a fixing tube 5 is arranged at the lower end of the bending tube 4, and the lower end of the traction wire 3 is connected to the fixing tube 5;

[0040] A handle 2 is fixedly provided on the upper end of the sleeve 1, a bone cement injection port is provided on the handle 2, and the injection hole 11 is connected to the bone cement injection port;

[0041] A slider 21 is movably arranged on the handle 2, and the slider 21 is connected to the upper end of the traction wire 3;

[0042] The slider 21 pulls the traction wire 3 upwards, so that the lower end of the traction wire 3 pulls the fixed tube 5, thereby driving the bending tube 4 to deform from a curved shape to a straight shape.

[0043] Specifically, as an optional implementation in this embodiment, Figure 4 As shown, a connecting rod mechanism is arranged between the traction wire 3 and the fixing tube 5, and the connecting rod mechanism includes

[0044] A lower shaft seat 61 is fixedly arranged on the inner wall of the fixed tube 5;

[0045] The connecting rod 6 has its lower end rotatably connected to the lower shaft seat 61 via the pin shaft 63 , and its upper end is connected to the traction wire 3 .

[0046] In this embodiment, by adding a connecting rod 6 between the traction wire 3 and the fixed tube 5, the traction wire 3 can drive the fixed seat to move, thereby preventing the pulling force of the traction wire 3 from being distributed to the bending tube 4.

[0047] Specifically, as an optional implementation in this embodiment, Figure 4 As shown, the lower end of the traction wire 3 is fixed to the upper shaft seat 62, and the upper end of the connecting rod 6 is rotatably connected to the upper shaft seat 62 via the pin shaft 63.

[0048] In this embodiment, the connecting rod 6 is rotatably matched with the upper shaft seat 62 through the pin shaft 63, so that when the traction wire 3 pulls the connecting rod 6, the connecting rod 6 has more degrees of freedom.

[0049] Specifically, as an optional implementation in this embodiment, Figure 4 As shown, the upper and lower ends of the connecting rod 6 are bent so that the connecting rod 6 forms a C-shaped structure.

[0050] The connecting rod 6 is designed to be C-shaped, so that the traction wire 3 can guide the fixed tube 5 to move through the connecting rod 6, thereby driving the bending tube 4 to bend and deform.

[0051] Specifically, as an optional implementation in this embodiment, Figure 2 As shown, a slide groove is provided on the handle 2, and a slide rail is formed in the slide groove;

[0052] The slider 21 is disposed in the slide groove. A guide groove is provided on the slider 21. The guide groove cooperates with the slide rail to guide the slider 21 to move in the slide groove.

[0053] In this embodiment, the bending tube 4 is a spring tube.

[0054] Before using the adjustable bend bone cement filler of the utility model, the bending tube 4 needs to be adjusted to a bending state, assuming it is 90°, and then the slider 21 is moved, and the slider 21 drives the fixed tube 5 to move through the traction wire 3, so that the bending tube 4 is slowly deformed, and finally the bending tube 4 is adjusted to a straight state.

[0055] When bone cement is injected into the vertebral cavity, the slider 21 on the handle 2 is moved forward and backward, and the slider 21 drives the traction wire 3 to move up and down. The traction wire 3 drives the fixing tube 5 to move through the connecting rod 6, and drives the bending sleeve 1 to be adjusted to different bending angles.

[0056] Before injecting bone cement, confirm whether the slider 21 of the handle 2 is flexible, then adjust the curved sleeve 1 to be vertical, and insert it into the vertebral body along the working sleeve 1. Through X-rays, adjust the curved sleeve 1 to the cavity position in real time, and use the bone cement filler push rod to push the bone cement into the vertebral body. After the bone cement is completely injected, straighten the bone cement curved sleeve 1 and slowly withdraw it from the working channel.

[0057] How to use the adjustable curved bone cement filler:

[0058] 1. Use puncture needles, dilators, bone drills, guide wires and other instruments to locate the vertebral lesions and establish a working channel;

[0059] 2. Use a curved balloon to expand and compact the cancellous bone in the vertebral body;

[0060] 3. Adjust the curved sleeve 1 of the adjustable curved bone cement filler to a vertical position (90°);

[0061] 4. Prepare bone cement and use a syringe to pre-inject the bone cement into the bone cement sleeve 1 until the bone cement slightly overflows from the distal end of the sleeve 1;

[0062] 5. Insert the prepared bone cement filler into the vertebral body along the working sleeve 1;

[0063] 6. Observe the position of the bone cement sleeve 1 in real time through X-ray images until the working channel is exposed. At the same time, push the slider 21 on the handle 2 to extend the curved sleeve 1 into the vertebral cavity at a suitable angle and position;

[0064] 7. Then, the bone cement is injected into the lesion through the push rod of the bone cement filler. The filling state of the bone cement in the vertebral cavity is observed in real time through X-ray images, and the slider 21 of the handle 2 is pushed to complete the bone cement filling;

[0065] 8. After the bone cement is completely injected, adjust the bone cement bending sleeve 1 and slowly withdraw it from the working channel.

[0066] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0067] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0069] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0070] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0071] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0072] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An adjustable curved bone cement filler, characterized in that: include A casing (1), wherein an injection hole (11) and a wire threading hole (12) are provided in the casing (1), and a traction wire (3) is arranged in the wire threading hole (12); A bending tube (4), the upper end of which is fixedly connected to the lower end of the sleeve (1), and the lower end of which is provided with a fixing tube (5), and the lower end of the traction wire (3) is connected to the fixing tube (5); A handle (2) is fixedly arranged on the upper end of the sleeve (1), a bone cement injection port is provided on the handle (2), and the injection hole (11) is connected to the bone cement injection port; A slider (21) is movably arranged on the handle (2), and the slider (21) is connected to the upper end of the traction wire (3); The slider (21) pulls the traction wire (3) upwards, so that the lower end of the traction wire (3) pulls the fixed tube (5), thereby driving the bending tube (4) to deform from a bent state to a straight state.

2. The adjustable curved bone cement filler according to claim 1, characterized in that: A connecting rod mechanism is provided between the traction wire (3) and the fixing tube (5), and the connecting rod mechanism comprises A lower shaft seat (61) is fixedly arranged on the inner wall of the fixed tube (5); The connecting rod (6) has a lower end rotatably connected to the lower shaft seat (61) via a pin shaft (63), and an upper end connected to the traction wire (3).

3. The adjustable curved bone cement filler according to claim 2, characterized in that: The lower end of the traction wire (3) is fixed to an upper shaft seat (62), and the upper end of the connecting rod (6) is rotatably connected to the upper shaft seat (62) via a pin shaft (63).

4. The adjustable curved bone cement filler according to claim 2, characterized in that: The upper and lower ends of the connecting rod (6) are bent structures, so that the connecting rod (6) forms a C-shaped structure.

5. The adjustable curved bone cement filler according to claim 1, characterized in that: The handle (2) is provided with a slide groove, and a slide rail is formed in the slide groove; The slider (21) is arranged in the slide groove, and a guide groove is provided on the slider (21), and the guide groove cooperates with the slide rail to guide the slider (21) to move in the slide groove.

6. The adjustable curved bone cement filler according to claim 1, characterized in that: The bending tube (4) is a spring tube.

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