Bone cement push rod

Abstract

The utility model belongs to the field of medical instruments, particularly relates to a bone cement push rod, and provides the following scheme aiming at the problem that the bone cement push rod is extremely inconvenient to operate due to the existence of a G-arm machine: the bone cement push rod comprises a guide cylinder and an injection tube, a guide tube is inserted into the guide cylinder, and the top of the guide tube is fixedly connected with a communicated connecting box; the bottom of the connecting box is fixedly connected and communicated with a connecting pipe, and a flexible hose is in threaded connection between the connecting pipe and the discharge end of the bottom of the injection pipe; according to the utility model, the bone paste is guided by using the hose, so that a worker can perform a PKP surgery operation more conveniently under a G-arm machine, and meanwhile, the one-way tube is arranged at the bottom of the injection tube, so that the operation is more convenient, and the operation is more convenient. According to the bone paste injection device, a worker can conveniently add bone paste which is treated in advance into the injection pipe, more air is prevented from entering the injection pipe, the exhaust time is shortened, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially relates to bone cement push rod. BACKGROUND

[0002] Bone cement is mainly made of calcium phosphate, polymethyl methacrylate and other materials, and the push rod is a tool for pushing bone cement to the affected area for treatment. In the bone fracture surgery, bone cement is often used to fill the fracture gap and fix the bone fragments. During the operation, G-arm X-ray machine is needed.

[0003] The G-arm X-ray machine generates X-rays from two perpendicular directions, penetrates the human body, and displays images through X-ray enhancement equipment. The front and lateral images can be obtained simultaneously, which can determine the position and depth, increase the accuracy of the operation, reduce the operation time, and reduce the X-ray radiation received by the patient and the doctor. However, due to the existence of the G-arm machine, the operation of the bone cement push rod is extremely inconvenient, which prolongs the operation time and increases the operation risk. Therefore, a bone cement push rod is proposed. SUMMARY

[0004] The utility model discloses a bone cement push rod which solves the problem of inconvenient operation of the bone cement push rod due to the existence of the G-arm machine in the prior art.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] The bone cement push rod comprises a guide cylinder and an injection pipe, a catheter is inserted into the guide cylinder, a connecting box is fixedly connected to the top of the catheter, a connecting pipe is fixedly connected to the bottom of the connecting box, and a flexible hose is threadedly connected between the connecting pipe and the discharge end of the injection pipe bottom.

[0007] A penetrating pressure rod is threadedly connected to the top of the injection pipe, a piston is rotatably connected to the bottom of the pressure rod, and the piston slides in the injection pipe.

[0008] A fixing assembly is arranged between the injection pipe and the pressure rod to fix the position of the piston.

[0009] As a further scheme of the utility model, the fixing assembly comprises a rotating disc and a third jackscrew, the rotating disc is rotatably connected to the circumference of the pressure rod, two positioning pieces are fixedly connected to the bottom of the rotating disc, the positioning pieces slide through the top of the injection pipe, the third jackscrew is threadedly connected to one side of the injection pipe and penetrates the injection pipe, and the third jackscrew abuts against one of the positioning pieces.

[0010] As a further scheme of the utility model, the bottom of the injection pipe is integrally formed with a communicating supplementary pipe, the bottom of the supplementary pipe is threadedly connected with a one-way pipe, the bottom of the one-way pipe is provided with a plug, and a spring is arranged between the plug and the inner wall of the top of the one-way pipe.

[0011] As a further scheme of the utility model, the circumference of the hose is sleeved with a sliding sleeve, the inner walls on the two sides of the sliding sleeve are slidably connected with a pressing plate, one side of the pressing plate is rotatably connected with a threaded rod, and the threaded rod is threadedly penetrated through the sliding sleeve.

[0012] As a further scheme of the utility model, the circumference of the guide cylinder is sleeved with a positioning seat, one side of the positioning seat is threadedly connected with a penetrating first jackscrew, and the first jackscrew is in abutment with the guide cylinder.

[0013] As a further scheme of the utility model, the top of the guide cylinder is fixedly connected with a positioning frame used in cooperation with the connecting box, one side of the positioning frame is threadedly connected with a penetrating second jackscrew, and the second jackscrew is in abutment with the connecting box.

[0014] In the application, when in use, the hose is connected with the connecting pipe, the rotating threaded rod is connected, the threaded rod drives the pressing plate to move, the hose is pressed by the pressing plate, the bone cement is prevented from passing through, the treated bone cement is extracted through the needle pipe in advance, then air is discharged, the bone cement is injected into the injection pipe through the one-way pipe, when the bone cement is injected, with the increase of the pressure of the bone cement, the plug is opened by the bone cement, then the bone cement enters into the injection pipe, simultaneously the piston is pushed to move upwards, thereby the bone cement fills the injection pipe, and the air entering into the injection pipe is reduced, after the filling of the bone cement is completed, the threaded rod is loosened, then the pressing rod is rotated, the piston is driven to move by the pressing rod, thereby the bone cement in the injection pipe is pushed into the hose, the bone cement enters into the connecting box along the hose, and finally enters into the catheter, after the bone cement is discharged, the third jackscrew is locked, then the catheter is inserted into the guide pipe in the human body, the third jackscrew is loosened, the pressing rod is pushed again, thereby the bone cement is delivered to the bone, so that the filling of the bone cement is completed.

[0015] Advantageous effects: in the utility model, the bone cement push rod is used in cooperation between the guide cylinder, the hose and the injection pipe, the hose is used for guiding the bone cement, thereby the staff can conveniently operate the PKP operation under the G arm machine;

[0016] In the utility model, the bone cement push rod is provided with the one-way pipe at the bottom of the injection pipe, so that the staff can conveniently add the bone cement treated in advance into the injection pipe, more air is prevented from entering into the injection pipe, the air discharge time is reduced, and the work efficiency is improved;

[0017] The utility model discloses, utilize the hose to guide bone mud, and then make the staff be able to do PKP surgical operation under G arm machine more convenient, and the setting of installing one -way pipe at the bottom of injection pipe makes the staff can conveniently add the bone mud of advance processing to injection pipe, prevent more air from entering into injection pipe, reduce exhaust time, improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model discloses a three -dimensional structure schematic diagram of bone cement push rod is provided for the utility model;

[0019] Figure 2 The utility model discloses a guide cylinder cross section structure schematic diagram of bone cement push rod is provided for the utility model;

[0020] Figure 3 The utility model discloses an injection pipe cross section structure schematic diagram of bone cement push rod is provided for the utility model;

[0021] Figure 4 The utility model discloses a bone cement push rod's Figure 3 A point amplification structure schematic diagram in the middle.

[0022] In the drawing: 1, guide cylinder;2, injection pipe;3, hose;4, positioning seat;5, first top silk;6, catheter;7, connecting box;8, connecting pipe;9, positioning frame;10, second top silk;11, piston;12, pressure bar;13, rotary table;14, positioning sheet;15, third top silk;16, sliding sleeve;17, pressing plate;18, threaded rod;19, supplementary pipe;20, one -way pipe;21, plug;22, spring. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0024] Embodiment 1, refer to Figures 1-4 , bone cement push rod, include: guide cylinder 1 and injection pipe 2, guide cylinder 1 outer wall is provided with scale line, the depth of insertion is observed conveniently for people, guide cylinder 1 is inserted and connected with catheter 6, and the top of catheter 6 is fixedly connected with the communicating connecting box 7, and the bottom of connecting box 7 is fixedly connected with the communicating connecting pipe 8, and the flexible hose 3 is screwed between the discharge end of the bottom of connecting pipe 8 and injection pipe 2, and the stability of connection is increased by screwing, prevents falling, and at the same time, through the setting of hose 3, the operator is more convenient to do PKP surgical operation under G arm machine, reduces the X-ray radiation that doctor accepts;

[0025] The top of the injection tube 2 is threadedly connected with a penetrating pressing rod 12, the bottom of the pressing rod 12 is rotationally connected with a piston 11, the piston 11 slides in the injection tube 2, the pressing rod 12 is rotated to drive the piston 11 to move, and then the bone cement in the injection tube 2 is pushed into the hose 3, the bone cement enters the connecting box 7 along the hose 3, and finally enters the catheter 6;

[0026] The fixed assembly is arranged between the injection tube 2 and the pressing rod 12 and is used for fixing the position of the piston 11.

[0027] Embodiment 2, refer to Figures 1-4 On the basis of the embodiment 1, the bone cement pushing rod is improved:

[0028] In the utility model, the fixed assembly includes a rotating disc 13 and a third jackscrew 15, the rotating disc 13 is rotationally connected at the circumference of the pressing rod 12, the bottom of the rotating disc 13 is fixedly connected with two positioning pieces 14, the positioning pieces 14 all slide and penetrate the top of the injection tube 2, the third jackscrew 15 is threadedly connected at one side of the injection tube 2 and penetrates the injection tube 2, the third jackscrew 15 is in contact with one of the positioning pieces 14, the third jackscrew 15 is loosened, the third jackscrew 15 is in contact with one of the positioning pieces 14, and the stability of the pressing rod 12 can be further increased.

[0029] Especially, the bottom of the injection tube 2 is integrally formed with a communicating supplement pipe 19, the bottom of the supplement pipe 19 is threadedly connected with a one-way pipe 20, the bottom of the one-way pipe 20 is provided with a plug 21, a spring 22 is arranged between the plug 21 and the inner wall of the top of the one-way pipe 20, the bone cement that is pre-evacuated can be guided into the injection tube 2 through the one-way pipe 20, the air in the injection tube 2 when the bone cement is extracted by itself is effectively reduced, and use is facilitated.

[0030] It should be noted that the circumference of the hose 3 is sleeved with a sliding sleeve 16, the inner walls of the two sides of the sliding sleeve 16 are slidably connected with a pressing plate 17, one side of the pressing plate 17 is rotationally connected with a threaded rod 18, the threaded rod 18 threadedly penetrates the sliding sleeve 16, the pressing plate 17 is blocked to the hose 3 by rotating the threaded rod 18, and the flexibility of use is improved.

[0031] In the utility model, the circumference of the guide cylinder 1 is sleeved with a positioning seat 4, one side of the positioning seat 4 is threadedly connected with a penetrating first jackscrew 5, the first jackscrew 5 is in contact with the guide cylinder 1, and the depth of the guide cylinder 1 inserted can be fixed through the first jackscrew 5.

[0032] Especially, the top of the guide cylinder 1 is fixedly connected with a positioning frame 9 used in cooperation with the connecting box 7, one side of the positioning frame 9 is threadedly connected with a penetrating second jackscrew 10, the second jackscrew 10 is in contact with the connecting box 7, and the connecting box 7 can be fixed through the second jackscrew 10.

[0033] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A bone cement push rod comprising a guide tube (1) and an injection tube (2), characterized in that, The guide cylinder (1) is inserted with a catheter (6), the top of the catheter (6) is fixedly connected with a communicating connecting box (7), the bottom of the connecting box (7) is fixedly connected with a communicating connecting pipe (8), the connecting pipe (8) is threadedly connected with a flexible hose (3) between the discharge end of the bottom of the injection pipe (2); The top of the injection pipe (2) is threadedly connected with a penetrating pressure rod (12), the bottom of the pressure rod (12) is rotatably connected with a piston (11), the piston (11) slides in the injection pipe (2); A fixing assembly is arranged between the injection pipe (2) and the pressure rod (12) for fixing the position of the piston (11).

2. The cement rod of claim 1, wherein, The fixing assembly comprises a rotating disc (13) and a third jackscrew (15), the rotating disc (13) is rotatably connected to the circumference of the pressure rod (12), the bottom of the rotating disc (13) is fixedly connected with two positioning pieces (14), the positioning pieces (14) slide through the top of the injection pipe (2), the third jackscrew (15) is threadedly connected to one side of the injection pipe (2) and penetrates the injection pipe (2), and the third jackscrew (15) abuts against one of the positioning pieces (14).

3. The cement push rod of claim 1, wherein, The bottom of the injection pipe (2) is integrally formed with a communicating supplementary pipe (19), the bottom of the supplementary pipe (19) is threadedly connected with a one-way pipe (20), the bottom of the one-way pipe (20) is provided with a plug (21), and the plug (21) and the inner wall of the top of the one-way pipe (20) are provided with a spring (22) therebetween.

4. The cement push rod of claim 1, wherein, The circumference of the hose (3) is sleeved with a sliding sleeve (16), the two side inner walls of the sliding sleeve (16) are slidably connected with a pressing plate (17), one side of the pressing plate (17) is rotatably connected with a threaded rod (18), and the threaded rod (18) threadedly penetrates the sliding sleeve (16).

5. The cement push rod of claim 1, wherein, The circumference of the guide cylinder (1) is sleeved with a positioning seat (4), one side of the positioning seat (4) is threadedly connected with a penetrating first jackscrew (5), and the first jackscrew (5) abuts against the guide cylinder (1).

6. The cement push rod of claim 1, wherein, The top of the guide cylinder (1) is fixedly connected with a positioning frame (9) used in cooperation with the connecting box (7), one side of the positioning frame (9) is threadedly connected with a penetrating second jackscrew (10), and the second jackscrew (10) abuts against the connecting box (7). The top of the guide cylinder (1) is fixedly connected with a positioning frame (9) used in cooperation with the connecting box (7), one side of the positioning frame (9) is threadedly connected with a penetrating second jackscrew (10), and the second jackscrew (10) abuts against the connecting box (7).

Images