Accurate bone cement injection assist device

Abstract

The utility model discloses a bone cement accurate injection assist device, belongs to the technical field of medical instruments, and solves the problem that the use amount of bone cement is inconvenient to control, the bone cement accurate injection assist device comprises an injection needle cylinder and a piston rod, the piston rod is slidably connected to the inner wall of the injection needle cylinder, and a clamping mechanism is attached to the outer surface of the injection needle cylinder; an injection mechanism is slidably connected to the outer surface of the clamping mechanism, the clamping mechanism comprises a through hole plate attached to the outer surface of the injection needle cylinder, a supporting frame is fixedly connected to the outer surface of the through hole plate, and a push rod is slidably connected to the outer surface of the supporting frame. According to the bone cement injection device, a gear motor is started, and an output shaft of the gear motor drives a sliding frame to move towards a through hole plate, so that a push plate can push a piston rod to slide on the inner wall of an injection needle cylinder, and then bone cement in the injection needle cylinder can be conveniently pushed to the required position of a human body; the displacement distance of the sliding frame is conveniently detected through an infrared distance detector, and then the use amount of the bone cement is conveniently controlled.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, especially a kind of bone cement accurate injection auxiliary device. BACKGROUND

[0002] In modern medical field, the precision and safety requirement of orthopedic surgery is increasingly improved.Especially in dealing with some complex bone repair and reconstruction surgery, such as vertebral body reinforcement surgery, bone defect filling surgery, etc., taking vertebral body reinforcement surgery as an example, many patients need to enhance the strength and stability of vertebral body by injecting bone cement to relieve pain and restore its normal function due to osteoporosis, vertebral body tumor and other reasons causing vertebral body structure damage.

[0003] However, in the operation, doctors often rely on experience and hand feeling to control the injection amount of bone cement, which has great uncertainty and risk, and too much injection amount may cause bone cement leakage, compression of surrounding nerve and blood vessel tissue, and serious complications such as paralysis, nerve injury, etc., and too little injection amount cannot achieve the expected treatment effect, the stability of vertebral body cannot be effectively improved, and the symptoms of patients may not be relieved, and even secondary operation may be needed, so there is a problem of inconvenient control of bone cement dosage. SUMMARY

[0004] (I) Technical problem solved

[0005] In view of the problems existing in the prior art, the utility model provides a kind of bone cement accurate injection auxiliary device.

[0006] (II) Technical scheme

[0007] To achieve the above purpose, the utility model is realized by the following technical scheme: a kind of bone cement accurate injection auxiliary device, including injection needle cylinder and piston rod, the piston rod is slidably connected to the inner wall of the injection needle cylinder, and the outer surface of the injection needle cylinder is attached with clamping mechanism, the outer surface of the clamping mechanism is slidably connected with injection mechanism, the clamping mechanism includes the through-hole plate attached to the outer surface of the injection needle cylinder, the outer surface of the through-hole plate is fixedly connected with support frame, the outer surface of the support frame is slidably connected with push rod, the outer surface of the push rod is attached with the outer surface of the injection needle cylinder, and the outer surface of the push rod is fixedly connected with gripping frame, the injection mechanism includes sliding frame slidably connected to the outer surface of the support frame, the outer surface of the sliding frame is fixedly connected with push plate, the outer surface of the push plate is attached with the outer surface of the piston rod, and the sliding frame is embedded with infrared distance detector on the side away from the push plate.

[0008] As a preferred scheme of the bone cement precise injection assist device, the injection mechanism further comprises a reduction motor fixedly connected to the inner wall of the holding frame, a threaded rod is fixedly connected to the output shaft of the reduction motor, and the outer surface of the threaded rod is in meshing connection with the outer surface of the sliding frame.

[0009] By starting the reduction motor, the piston rod can be slowly moved in the inner wall of the injection needle cylinder.

[0010] As a preferred scheme of the bone cement precise injection assist device, the inner wall of the holding frame is fixedly connected with a heat dissipation grille, and the heat dissipation grille is arranged on one side of the reduction motor.

[0011] By adopting the above technical scheme, the heat dissipation grille can dissipate heat for the reduction motor, thereby prolonging the service life of the reduction motor to a certain extent.

[0012] As a preferred scheme of the bone cement precise injection assist device, the inner wall of the holding frame is fixedly connected with a heat dissipation grille, and the heat dissipation grille is arranged on one side of the reduction motor.

[0013] By adopting the above technical scheme, the heat dissipation grille can dissipate heat for the reduction motor, thereby prolonging the service life of the reduction motor to a certain extent.

[0014] As a preferred scheme of the bone cement precise injection assist device, the outer surface of the push rod is fixedly connected with a limiting block, a groove is formed in the outer surface of the supporting frame in cooperation with the limiting block, and the limiting block is slidably connected to the outer surface of the supporting frame.

[0015] By adopting the above technical scheme, the limiting block can limit the push rod, and the push rod can be prevented from being separated from the supporting frame.

[0016] As a preferred scheme of the bone cement precise injection assist device, the push rods are fixedly connected with a positioning plate, a knob is threadedly connected to the lower surface of the positioning plate, and the upper end of the knob is in close contact with the lower surface of the supporting frame.

[0017] By adopting the above technical scheme, the upper end of the knob is in close contact with the lower surface of the supporting frame by rotating the knob, so that the positioning plate and the push rod can be positioned.

[0018] (Three) beneficial effects

[0019] The bone cement precise injection assist device has the following beneficial effects:

[0020] 1. By starting the deceleration motor, the output shaft of the deceleration motor drives the sliding frame to move towards the direction of the through-hole plate, so that the push plate can push the piston rod to slide on the inner wall of the injection syringe, thereby facilitating the pushing of the bone cement in the injection syringe to the required position of the human body, and the infrared distance detector facilitates the detection of the displacement distance of the sliding frame, thereby facilitating the control of the amount of bone cement.

[0021] 2. By rotating the knob, the upper end of the knob is separated from the lower surface of the supporting frame, thereby facilitating the adjustment of the position of the positioning plate and the push rod, then the injection syringe containing bone cement is placed on the outer surface of the through-hole plate, and then the positioning plate and the push rod are slid, so that the outer surface of the push rod is attached to the outer surface of the injection syringe, thereby facilitating the limiting of different sizes of injection syringes. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is the overall structure schematic diagram of the present application;

[0024] Figure 2 is the front cross-sectional structure schematic diagram of the present application;

[0025] Figure 3 is the side cross-sectional structure schematic diagram of the present application;

[0026] Figure 4 is the top cross-sectional structure schematic diagram of the present application.

[0027] In the figure, 1, injection syringe; 101, piston rod; 2, clamping mechanism; 201, supporting frame; 202, push rod; 203, positioning plate; 204, holding frame; 205, through-hole plate; 206, knob; 207, limiting block; 3, injection mechanism; 301, push plate; 302, threaded rod; 303, control panel; 304, infrared distance detector; 305, sliding frame; 306, heat dissipation grille; 307, deceleration motor; 308, battery. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application.

[0029] Embodiment 1

[0030] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the first embodiment of the utility model provides a kind of bone cement accurate injection auxiliary, including injection needle cylinder 1 and piston rod 101, piston rod 101 is slidably connected in the inner wall of injection needle cylinder 1, and the outer surface of injection needle cylinder 1 is attached with clamping mechanism 2, the outer surface of clamping mechanism 2 is slidably connected with injection mechanism 3, and injection mechanism 3 includes the sliding frame 305 slidably connected in the outer surface of support frame 201, the outer surface of sliding frame 305 is fixedly connected with push plate 301, the outer surface of push plate 301 is attached with the outer surface of piston rod 101, and the infrared distance detector 304 is embedded in the side of sliding frame 305 away from push plate 301.

[0031] Specific injection mechanism 3 further includes fixedly connected with the inner wall of gripping frame 204 reduction motor 307, the output shaft of reduction motor 307 is fixedly connected with threaded rod 302, the outer surface of threaded rod 302 is engaged with the outer surface of sliding frame 305, the inner wall of gripping frame 204 is fixedly connected with heat dissipation grille 306, heat dissipation grille 306 is arranged at the side of reduction motor 307, and the inner wall of gripping frame 204 is slidably connected with battery 308, and the outer surface of infrared distance detector 304 is fixedly connected with control panel 303, and infrared distance detector 304 can monitor the displacement distance of sliding frame 305 in real time, and its working principle is that infrared light is emitted, irradiates the specific mark or reflecting surface on support frame 201, then receives the light reflected back, according to the propagation time and angle of light, the distance between sliding frame and detector is calculated, control panel 303 can adjust and control the displacement distance of sliding frame 305 in real time according to the real-time demand of operation and the operation instruction of doctor, can adjust the speed or rotation time of reduction motor 307 by sending instruction through control panel 303, to change the moving speed and displacement of sliding frame 305.

[0032] Further start reduction motor 307, the output shaft of reduction motor 307 drives sliding frame 305 to move to the direction of through-hole plate 205, so that push plate 301 can push piston rod 101 to slide on the inner wall of injection needle cylinder 1, to facilitate the bone cement in injection needle cylinder 1 to be pushed to the position required by human body, the displacement distance of sliding frame 305 is detected by infrared distance detector 304, to facilitate the control of the amount of bone cement.

[0033] Embodiment 2

[0034] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4For the second embodiment of the utility model, this embodiment is based on the last embodiment, the clamping mechanism 2 includes the through hole plate 205 that is attached to the outer surface of the injection needle cylinder 1, the outer surface of the through hole plate 205 is fixedly connected with the support frame 201, the outer surface of the support frame 201 is slidingly connected with the push rod 202, the outer surface of the push rod 202 is attached to the outer surface of the injection needle cylinder 1, and the outer surface of the push rod 202 is fixedly connected with the holding frame 204.

[0035] Specifically, the outer surface of the push rod 202 is fixedly connected with the limiting block 207, and the outer surface of the support frame 201 is provided with a groove matched with the limiting block 207, the limiting block 207 is slidingly connected to the outer surface of the support frame 201, the push rod 202 is fixedly connected with the positioning plate 203, the lower surface of the positioning plate 203 is threadedly connected with the knob 206, and the upper end of the knob 206 is attached to the lower surface of the support frame 201.

[0036] Further rotate the knob 206, so that the upper end of the knob 206 is separated from the lower surface of the support frame 201, and then the position of the positioning plate 203 and the push rod 202 is adjusted, then the injection needle cylinder 1 filled with bone cement is placed on the outer surface of the through hole plate 205, then the positioning plate 203 and the push rod 202 are slid, so that the outer surface of the push rod 202 is attached to the outer surface of the injection needle cylinder 1, and then the size of the injection needle cylinder 1 is limited.

[0037] Working principle: by rotating the knob 206, the upper end of the knob 206 is separated from the lower surface of the support frame 201, and then the position of the positioning plate 203 and the push rod 202 is adjusted, then the injection needle cylinder 1 filled with bone cement is placed on the outer surface of the through hole plate 205, then the positioning plate 203 and the push rod 202 are slid, so that the outer surface of the push rod 202 is attached to the outer surface of the injection needle cylinder 1, and then the size of the injection needle cylinder 1 is limited, then the speed reducer motor 307 is started, the output shaft of the speed reducer motor 307 drives the sliding frame 305 to move towards the direction of the through hole plate 205, so that the push plate 301 can push the piston rod 101 to slide on the inner wall of the injection needle cylinder 1, and then the bone cement in the injection needle cylinder 1 is pushed to the required position of the human body, and the displacement distance of the sliding frame 305 is detected by the infrared distance detector 304, and then the amount of bone cement is controlled.

[0038] It should be noted that in this paper, relationship terms such as first and second 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 the entities or operations.

Claims

1. A bone cement precision injection aid comprising a syringe (1) and a piston rod (101) which is slidingly connected to the inner wall of the syringe (1), characterized in that: The outer surface of the injection needle cylinder (1) is attached with a clamping mechanism (2), and the outer surface of the clamping mechanism (2) is slidingly connected with an injection mechanism (3); The clamping mechanism (2) comprises a through-hole plate (205) attached to the outer surface of the injection needle cylinder (1), and the outer surface of the through-hole plate (205) is fixedly connected with a support frame (201), the outer surface of the support frame (201) is slidingly connected with a push rod (202), the outer surface of the push rod (202) is attached to the outer surface of the injection needle cylinder (1), and the outer surface of the push rod (202) is fixedly connected with a holding frame (204); The injection mechanism (3) comprises a sliding frame (305) slidingly connected to the outer surface of the support frame (201), the outer surface of the sliding frame (305) is fixedly connected with a push plate (301), the outer surface of the push plate (301) is attached to the outer surface of the piston rod (101), and the side of the sliding frame (305) away from the push plate (301) is embedded with an infrared distance detector (304).

2. The precision cement injection aid of claim 1, wherein: The injection mechanism (3) further comprises a reduction motor (307) fixedly connected to the inner wall of the holding frame (204), and the output shaft of the reduction motor (307) is fixedly connected with a threaded rod (302), and the outer surface of the threaded rod (302) is engagedly connected with the outer surface of the sliding frame (305).

3. The precision cement injection aid of claim 2, wherein: The inner wall of the holding frame (204) is fixedly connected with a heat dissipation grille (306), and the heat dissipation grille (306) is arranged on one side of the reduction motor (307).

4. The precision cement injection aid of claim 1, wherein: The inner wall of the holding frame (204) is slidingly connected with a battery (308), and the outer surface of the infrared distance detector (304) is fixedly connected with a control panel (303).

5. The precision cement injection aid of claim 4, wherein: The outer surface of the push rod (202) is fixedly connected with a limiting block (207), and the outer surface of the support frame (201) is provided with a groove matched with the limiting block (207), and the limiting block (207) is slidingly connected to the outer surface of the support frame (201).

6. The precision cement injection aid of claim 5, wherein: The push rod (202) is fixedly connected with a positioning plate (203), the lower surface of the positioning plate (203) is threadedly connected with a knob (206), and the upper end of the knob (206) is attached to the lower surface of the support frame (201).

Images