Hollow bone drill for vertebroplasty

Abstract

The hollow bone drill comprises a bone drill body and a handle fixedly connected to the bottom of the bone drill body, a material injection structure is arranged on the side, away from the handle, of the bone drill body, the material injection structure comprises a material storage pipe fixedly connected to the top of the bone drill body, a rubber plug is slidably connected to the interior of the material storage pipe, and the rubber plug is fixedly connected to the top of the bone drill body. And one side of the rubber plug is fixedly connected with a push rod extending out of the material storage pipe, and the side, away from the push rod, of the material storage pipe is fixedly connected with a connecting block. According to the hollow bone drill for the vertebroplasty, bone cement can be stored by arranging the material storage pipe, meanwhile, the material storage pipe can be conveniently communicated with the bone drill body to be carried, then by arranging the push rod and the rubber plug, the bone cement in the material storage pipe can be conveniently injected into the conveying pipe, and then the bone cement is injected into the body of a patient through the conveying pipe; in the whole process, medical workers only need to hold the bone drill body with hands, instruments do not need to be replaced midway, and part of operation time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertebroplasty, in particular to a hollow bone drill for vertebroplasty. Background Art

[0002] Vertebroplasty (PVP) is short for percutaneous vertebroplasty. It is a minimally invasive surgery that strengthens the vertebral body by injecting bone cement (polymethyl acrylate) or artificial bone into the diseased vertebral body. By making an incision of about 2 mm on the patient's back, a special puncture needle is used to puncture the vertebral body through the skin under X-ray monitoring to establish a working channel, and bone cement or artificial bone is injected into the vertebral body to stabilize the fractured vertebral body, prevent further collapse, and significantly relieve pain.

[0003] After searching, Chinese patent CN211213355U discloses an electric bone drill for orthopedics, including a handle, a shell, a motor, a drill bit and a first button. The shell is fixedly mounted on the upper wall of the handle, the motor is fixedly mounted on the lower wall of the shell, one end of the drill bit is fixedly mounted on the motor drive end, and the other end is movable through the left wall of the shell, the first button is fixedly mounted on the side wall of the handle and is electrically connected to the motor, and a cleaning structure is installed in the shell and the handle. The utility model relates to the technical field of orthopedic surgical instruments. Through the cooperation of the motor and the drill bit, the patient's bones can be precisely drilled. After the drilling is completed, the cleaning structure can be used to spray physiological saline on the area near the patient's drilling. This structure replaces the traditional manual cleaning of bone chips, which indirectly improves the practicality of the device.

[0004] However, the utility model is not convenient for directly injecting bone cement during use, because bone cement needs to be injected into the vertebral body after drilling, which increases the work steps of medical staff, lacks integrity, and cannot meet production needs. Therefore, a hollow bone drill for vertebroplasty is proposed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a hollow bone drill for vertebroplasty, which has the advantage of injecting bone cement at the same time, solving the problem of the inconvenience of directly injecting bone cement. Since bone cement needs to be injected into the vertebral body after drilling, the work steps of medical staff are increased, and the drill lacks integrity and cannot meet production needs.

[0006] To achieve the above object, the utility model provides the following technical solutions: a hollow bone drill for vertebroplasty, comprising a bone drill body and a handle fixedly connected to the bottom of the bone drill body, wherein a material injection structure is provided on a side of the bone drill body away from the handle;

[0007] The injection structure includes a material storage tube fixedly connected to the top of the bone drill body, the interior of the material storage tube is slidably connected to a rubber plug, one side of the rubber plug is fixedly connected to a push rod extending to the outside of the material storage tube, the side of the material storage tube away from the push rod is fixedly connected to a connecting block, and the side of the connecting block away from the material storage tube is fixedly connected to a delivery tube.

[0008] Furthermore, the outer wall of the rubber stopper fits with the inner wall of the material storage tube, a cover body is sleeved on the side of the material storage tube away from the connecting block, and the material storage tube extends to the inside of the cover body and is threadedly connected thereto.

[0009] Furthermore, a threaded block is fixedly connected to one side of the bone drill body, the external thread of the threaded block is connected to a mounting seat, the mounting seat is fixedly connected to a sleeve on a side away from the bone drill body, the interior of the sleeve is fixedly connected to a spring, one end of the spring is fixedly connected to a telescopic rod extending to the outside of the sleeve, and the end of the telescopic rod away from the spring is fixedly connected to a positioning plate.

[0010] Furthermore, the telescopic rod is in a T-shape, and the number of the sleeves is two, and the two sleeves are symmetrically distributed on one side of the mounting seat.

[0011] Furthermore, a driving motor is fixedly connected to the interior of the bone drill body, and a rotating shaft extending to the interior of the threaded block is fixedly connected to the output shaft of the driving motor.

[0012] Furthermore, one end of the rotating shaft away from the driving motor is fixedly connected to a connecting piece, and one end of the connecting piece away from the rotating shaft is fixedly connected to a drill bit penetrating the positioning plate.

[0013] Furthermore, two mounting plates are arranged outside the bone drill body, a winding roller is rotatably connected between the two mounting plates, and a cable electrically connected to the bone drill body is wound around the winding roller.

[0014] Furthermore, a servo motor for rotating the winding roller is fixedly connected to one side of the mounting plate, a limit plate is fixedly connected between the two mounting plates, and the cable passes through the limit plate.

[0015] Compared with the prior art, the utility model provides a hollow bone drill for vertebroplasty, which has the following beneficial effects:

[0016] 1. The hollow bone drill for vertebroplasty can store bone cement by providing a storage tube, and at the same time, it is convenient to connect the drill body to carry it. Then, by providing a push rod and a rubber plug, it is convenient to inject the bone cement in the storage tube into the delivery tube, and then inject the bone cement into the patient's body through the delivery tube. During the whole process, medical staff only need to hold the bone drill body, and there is no need to change instruments in the middle, which saves part of the operation time.

[0017] 2. The hollow bone drill used in vertebroplasty is provided with a spring and a telescopic rod so that the positioning plate can be movable. The positioning plate is provided to facilitate the staff to position the drill bit to prevent it from shifting. At the same time, the threaded block and the mounting seat are provided to facilitate the removal of the mounting seat together with the positioning plate, thereby solving the problem of inconvenience in directly injecting bone cement. Since bone cement needs to be injected into the vertebral body after drilling, the work steps of medical staff are increased, and the drill bit is not integrated and cannot meet the production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the injection structure of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the mounting seat of the utility model.

[0021] In the figure: 1 bone drill body, 2 handle, 3 material storage tube, 4 rubber plug, 5 push rod, 6 connecting block, 7 delivery tube, 8 cover body, 9 threaded block, 10 mounting seat, 11 sleeve, 12 spring, 13 telescopic rod, 14 positioning plate, 15 driving motor, 16 rotating shaft, 17 connecting piece, 18 drill bit, 19 mounting plate, 20 winding roller, 21 cable, 22 servo motor, 23 limit plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0023] Embodiment 1:

[0024] See also Figure 1-3 In this embodiment, a hollow bone drill for vertebroplasty includes a bone drill body 1 and a handle 2 fixedly connected to the bottom of the bone drill body 1. A material injection structure is provided on the side of the bone drill body 1 away from the handle 2. The material injection structure includes a material storage tube 3 fixedly connected to the top of the bone drill body 1. A rubber plug 4 is slidably connected to the inside of the material storage tube 3. A push rod 5 extending to the outside of the material storage tube 3 is fixedly connected to one side of the rubber plug 4. A connecting block 6 is fixedly connected to the side of the material storage tube 3 away from the push rod 5. A delivery tube 7 is fixedly connected to the side of the connecting block 6 away from the material storage tube 3.

[0025] The outer wall of the rubber stopper 4 fits with the inner wall of the material storage tube 3 , and a cover 8 is sleeved on the side of the material storage tube 3 away from the connecting block 6 . The material storage tube 3 extends to the inside of the cover 8 and is threadedly connected thereto.

[0026] It should be noted that the push rod 5 passes through the cover body 8 , the delivery pipe 7 is a stainless steel hose, and the outside of the handle 2 is fixedly connected with an anti-slip pad.

[0027] In this embodiment, a threaded block 9 is fixedly connected to one side of the bone drill body 1, and an external thread of the threaded block 9 is connected to a mounting seat 10, and a sleeve 11 is fixedly connected to the side of the mounting seat 10 away from the bone drill body 1, and a spring 12 is fixedly connected to the inside of the sleeve 11, and one end of the spring 12 is fixedly connected to a telescopic rod 13 extending to the outside of the sleeve 11, and the end of the telescopic rod 13 away from the spring 12 is fixedly connected to a positioning plate 14.

[0028] Among them, the telescopic rod 13 is in a T-shape, the number of the sleeves 11 is two, the two sleeves 11 are symmetrically distributed on one side of the mounting seat 10, the two sleeves 11 are both located in the middle position of the mounting seat 10, and the positioning plate 14 is in a ring shape.

[0029] In this embodiment, a driving motor 15 is fixedly connected to the interior of the bone drill body 1, and a rotating shaft 16 extending to the interior of the threaded block 9 is fixedly connected to the output shaft of the driving motor 15. A connecting piece 17 is fixedly connected to the end of the rotating shaft 16 away from the driving motor 15, and a drill bit 18 that penetrates the positioning plate 14 is fixedly connected to the end of the connecting piece 17 away from the rotating shaft 16.

[0030] The connector 17 and the drill bit 18 are plug-in-type connected, which is convenient for replacing drill bits 18 of different specifications.

[0031] Embodiment 2:

[0032] See also Figure 1 On the basis of the first embodiment, the present invention comprises two mounting plates 19 arranged outside the bone drill body 1, a winding roller 20 is rotatably connected between the two mounting plates 19, a cable 21 electrically connected to the bone drill body 1 is wound around the winding roller 20, a servo motor 22 for rotating the winding roller 20 is fixedly connected to one side of the mounting plate 19, a limiting plate 23 is fixedly connected between the two mounting plates 19, and the cable 21 passes through the limiting plate 23.

[0033] In this embodiment, the two mounting plates 19 and the servo motor 22 are fixedly mounted on a designated wall or ceiling, and the opposite sides of the two mounting plates 19 are fixedly connected with bearings adapted to the winding roller 20 .

[0034] The above technical solution is adopted to facilitate the winding of the cable 21 and prevent the wires from being messy.

[0035] The working principle of the above embodiment is:

[0036] First, remove the cover body 8 and the rubber plug 4, pour the bone cement into the storage tube 3, then place the rubber plug 4 in the storage tube 3 and cover the cover body 8 at the same time, then select a drill bit 18 of appropriate specifications and insert it into the connector 17 to fix the drill bit 18 and the connector 17, then rotate and install the mounting base 10 on the outside of the threaded block 9, then hold the handle 2, position the drill bit 18 at the specified position through the positioning plate 14, start the drive motor 15 to drive the drill bit 18 to rotate, after the drilling is completed, push the push rod 5 to drive the rubber plug 4 to move, and inject the bone cement into the patient's body. During the operation, the servo motor 22 can be started to drive the winding roller 20 to rotate, and the cable 21 can be retracted to an appropriate length to prevent the wires from being messy.

[0037] The electrical components mentioned in the text are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the text.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hollow bone drill for vertebroplasty, comprising a bone drill body (1) and a handle (2) fixedly connected to the bottom of the bone drill body (1), characterized in that: A material injection structure is provided on a side of the bone drill body (1) away from the handle (2); The injection structure comprises a material storage tube (3) fixedly connected to the top of the bone drill body (1); a rubber plug (4) is slidably connected to the interior of the material storage tube (3); a push rod (5) extending to the outside of the material storage tube (3) is fixedly connected to one side of the rubber plug (4); a connecting block (6) is fixedly connected to the side of the material storage tube (3) away from the push rod (5); and a conveying tube (7) is fixedly connected to the side of the connecting block (6) away from the material storage tube (3).

2. A hollow bone drill for vertebroplasty according to claim 1, characterized in that: The outer wall of the rubber stopper (4) fits with the inner wall of the material storage tube (3); a cover body (8) is sleeved on the side of the material storage tube (3) away from the connecting block (6); the material storage tube (3) extends to the inside of the cover body (8) and is threadedly connected thereto.

3. The hollow bone drill for vertebroplasty according to claim 1, characterized in that: A threaded block (9) is fixedly connected to one side of the bone drill body (1), an external thread of the threaded block (9) is connected to a mounting seat (10), a side of the mounting seat (10) away from the bone drill body (1) is fixedly connected to a sleeve (11), an interior of the sleeve (11) is fixedly connected to a spring (12), one end of the spring (12) is fixedly connected to a telescopic rod (13) extending to the outside of the sleeve (11), and an end of the telescopic rod (13) away from the spring (12) is fixedly connected to a positioning plate (14).

4. A hollow bone drill for vertebroplasty according to claim 3, characterized in that: The telescopic rod (13) is in a T-shape, and the number of the sleeves (11) is two, with the two sleeves (11) being symmetrically distributed on one side of the mounting seat (10).

5. The hollow bone drill for vertebroplasty according to claim 1, characterized in that: A driving motor (15) is fixedly connected to the interior of the bone drill body (1), and a rotating shaft (16) extending into the interior of the threaded block (9) is fixedly connected to the output shaft of the driving motor (15).

6. A hollow bone drill for vertebroplasty according to claim 5, characterized in that: One end of the rotating shaft (16) away from the driving motor (15) is fixedly connected to a connecting piece (17), and one end of the connecting piece (17) away from the rotating shaft (16) is fixedly connected to a drill bit (18) penetrating the positioning plate (14).

7. The hollow bone drill for vertebroplasty according to claim 1, characterized in that: Two mounting plates (19) are arranged outside the bone drill body (1), a winding roller (20) is rotatably connected between the two mounting plates (19), and a cable (21) electrically connected to the bone drill body (1) is wound around the winding roller (20).

8. The hollow bone drill for vertebroplasty according to claim 7, characterized in that: A servo motor (22) for rotating the winding roller (20) is fixedly connected to one side of the mounting plate (19), a limit plate (23) is fixedly connected between the two mounting plates (19), and the cable (21) passes through the limit plate (23).

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