CN211723397U

CN211723397U - Medical large bone cement filling device

Info

Publication number: CN211723397U
Application number: CN202020020525.2U
Authority: CN
Inventors: 王维; 赵志刚; 贺琪
Original assignee: CHANGZHOU BAILONG MINIMALLY INVASIVE MEDICAL DEVICES TECHNOLOGY CO LTD
Current assignee: CHANGZHOU BAILONG MINIMALLY INVASIVE MEDICAL DEVICES TECHNOLOGY CO LTD
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-10-23
Anticipated expiration: 2030-01-07

Abstract

The utility model discloses a medical large bone cement tucker, including bobbin, pipe box, first piston and piston rod, pipe box threaded connection fixes at the bobbin tip, and the pipe box tip has the discharge opening, and discharge opening surface thread fixed connection has a mud pipe, the inboard threaded connection of bobbin tip has the pressure relief device, the pressure relief device includes the set casing, set casing one side fixed surface is provided with the dog, a plurality of through-holes have been seted up on the dog surface, dog one side middle part fixedly connected with telescopic sleeve. The utility model discloses a among the slow-pressure device spring resume deformation drive sealed piece and resume the normal position, sealed piece is contradicted on annular protrusion piece surface to can avoid bone cement to excessively spill over, and then can avoid causing the influence to the operation, can also reduce patient's pain, be provided with the pipette through the bobbin lateral wall, can be favorable to improving the operation effect with inside the liquid catheter absorbs the pipette with bloody water and body fluid.

Description

Medical large bone cement filling device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a medical large-scale bone cement filling device.

Background

Vertebral compression fracture is the most common complication of osteoporosis patients, and the traditional open surgery treatment has large trauma and many complications. Percutaneous Vertebroplasty (PVP) and Percutaneous Kyphoplasty (PKP) are novel minimally invasive surgical operations which are developed rapidly in spinal surgery in recent years, and the mechanical stability of a diseased vertebral body is enhanced by directly injecting fillers such as bone cement and artificial bone into a compressed vertebral body through percutaneous injection or injecting fillers such as balloon expansion and then injecting the fillers.

In a minimally invasive surgery, the filler is required to be used for pushing the bone cement, the volume of a common bone cement filler is small, and when the pushing force on the surface of the piston rod 4 is removed in the filling process, the bone cement can continuously overflow from the barrel 1, so that the operation is affected, and the pain of a patient can be caused.

Therefore, it is necessary to develop a medical large bone cement filler to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a medical large-scale bone cement tucker to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a medical large bone cement filling device comprises a bobbin, a bobbin sleeve, a first piston and a piston rod, wherein the bobbin sleeve is fixedly connected to the end part of the bobbin in a threaded manner, the end part of the bobbin sleeve is provided with a discharge hole, the surface of the discharge hole is fixedly connected with a mud discharging pipe in a threaded manner, the inner side of the end part of the bobbin is fixedly connected with a pressure relief device in a threaded manner, the pressure relief device comprises a fixed shell, one side surface of the fixed shell is fixedly provided with a stop block, the surface of the stop block is provided with a plurality of through holes, the middle part of one side of the stop block is fixedly connected with a telescopic sleeve, a spring is arranged in the telescopic sleeve, the two ends of the spring are respectively and fixedly connected with the two ends of the telescopic sleeve, the side wall of the fixed shell is provided with an annular convex block, one side, the side wall of the barrel is provided with a liquid suction pipe, a second piston is arranged in the liquid suction pipe, a U-shaped rod is fixedly arranged on one side of the second piston, a sliding groove is formed in the side wall of the liquid suction pipe, a sliding block is arranged in the sliding groove in a sliding mode, and the other end of the U-shaped rod of the sliding block is fixedly connected with the side wall of the sliding block.

Preferably, the side wall of the barrel is fixedly provided with a buckle, the surface of the pipette is provided with an annular groove, and the annular groove is matched with the buckle.

Preferably, the end part of the pipette is fixedly connected with a catheter, and the catheter and the mud discharging pipe are mutually fixed through an adhesive tape.

Preferably, the bobbin end has a grip portion.

Preferably, the side wall of the bobbin is provided with an observation window, and the surface of the observation window is provided with a scale bar.

Preferably, a placing groove for placing a wrench is formed in the end surface of the fixing shell.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a be provided with pressure relief device, when using, in pouring the bone cement of allotment into the bobbin, fill in first piston and promote through the piston rod, bone cement flows into the set casing inside and fills through dog surface through-hole under the promotion extrusion of first piston, later promote the sealed piece to move to one side, form the gap between sealed piece and the annular bulge piece, bone cement flows out from the gap and exports through mud pipe, when stopping promoting the piston rod, the inside bone cement of bobbin loses the extrusion force, the spring resumes deformation and drives the sealed piece and resume the normal position, the sealed piece is contradicted on annular bulge piece surface, thereby can avoid bone cement excessive overflow, and then can avoid causing the influence to the operation, can also reduce patient's pain;

2. the utility model discloses a bobbin lateral wall is provided with the pipette, when the inside bloody water of centrum and body fluid are too much, stops promoting the piston rod, turns right side pulling slider this moment, and the slider drives U type rod motion, and U type rod motion can drive the second piston and turn right side motion, the inside negative pressure that forms of pipette this moment to can be with during the bloody water and body fluid absorb the pipette through the catheter, be favorable to improving the operation effect.

Drawings

Fig. 1 is a schematic overall front view of the present invention.

Fig. 2 is a schematic side sectional view of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 2 according to the present invention.

Fig. 4 is an enlarged view of a portion B of fig. 1 according to the present invention.

Fig. 5 is a U-shaped bar diagram of the present invention.

In the figure: 1 bobbin, 2 pipe sleeves, 3 first pistons, 4 piston rods, 5 mud discharging pipes, 6 pressure reducing devices, 601 fixed shells, 602 stoppers, 603 through holes, 604 telescopic sleeves, 605 springs, 606 annular convex blocks, 607 sealing blocks, 608 bearings, 609 threaded rods, 7 pipette, 8 second pistons, 9U-shaped rods, 10 chutes, 11 slide blocks, 12 buckles and 13 liquid guide pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a medical large bone cement filling device as shown in figures 1-5, which comprises a bobbin 1, a tube sleeve 2, a first piston 3 and a piston rod 4, wherein the tube sleeve 2 is fixed at the end part of the bobbin 1 through screw connection, the end part of the tube sleeve 2 is provided with a discharge hole, the surface of the discharge hole is fixedly connected with a mud pipe 5 through screw thread, the inner side of the end part of the bobbin 1 is connected with a pressure-reducing device 6 through screw thread, the pressure-reducing device 6 comprises a fixed shell 601, a baffle 602 is fixedly arranged on the surface of one side of the fixed shell 601, a plurality of through holes 603 are arranged on the surface of the baffle 602, a telescopic sleeve 604 is fixedly connected at the middle part of one side of the baffle 602, a spring 605 is arranged inside the telescopic sleeve 604, the two ends of the spring 605 are respectively and fixedly connected with the two ends of the telescopic sleeve 604, the utility model discloses a bone cement packer, including telescopic tube 604, sealing block 607, barrel 1, bearing, pipette 7, chute 10, the inside slider 11 that slides of chute 10, the other end of slider 11U type pole 9 and slider 11 lateral wall fixed connection have, telescopic tube 604 one end is fixed and is provided with bearing 608, sealing block 607 middle part threaded connection has threaded rod 609, and the elasticity size of spring 605 can be adjusted to rotatory threaded rod 609, and then can make the packer adapt to the bone cement of different viscosities, threaded rod 609 tip and bearing 608 middle part fixed connection, barrel 1 lateral wall is provided with pipette 7, pipette 7 is inside to have second piston 8, second piston 8 one side fixed and be provided with U type pole 9, the lateral wall.

Further, in the above technical solution, a buckle 12 is fixedly arranged on the side wall of the bobbin 1, an annular groove is formed on the surface of the pipette 7, and the annular groove is matched with the buckle 12;

further, in the above technical solution, a liquid guide pipe 13 is fixedly connected to an end of the liquid suction pipe 7, and the liquid guide pipe 13 and the mud discharging pipe 5 are fixed to each other through an adhesive tape;

further, in the above technical solution, the bobbin 1 has a grip portion at an end thereof;

further, in the above technical scheme, the side wall of the bobbin 1 is provided with an observation window, and the surface of the observation window is provided with scale bars, so that the extrusion amount can be conveniently and visually known;

further, in the above technical solution, a placing groove for placing a wrench is formed in the end surface of the fixing shell 601, so that the pressure relief device 6 can be taken out conveniently and cleaned.

The utility model discloses the theory of operation:

referring to the attached drawings 1-5 of the specification, when the bone cement mixer is used, the prepared bone cement is poured into the barrel 1, the first piston 3 is plugged and pushed by the piston rod 4, the bone cement flows into the fixing shell 601 through the through hole 603 on the surface of the stop block 602 and is filled fully under the pushing and extruding of the first piston 3, then the sealing block 607 is pushed to move to one side, a gap is formed between the sealing block 607 and the annular convex block 606, the bone cement flows out of the gap and is output through the mud discharging pipe 5, when the piston rod 4 is stopped to be pushed, the bone cement in the barrel 1 loses the extruding force, the spring 605 recovers deformation to drive the sealing block 607 to recover the original position, and the sealing block 607 is abutted against the surface of the annular convex block 606, so that the excessive overflow of the bone cement can be avoided;

referring to the attached drawing 1 of the specification, the pipette 7 is arranged on the side wall of the barrel 1, when the blood in the vertebral body is too much, the piston rod 4 stops being pushed, the slide block 11 is pulled to the right side at the moment, the slide block 11 drives the U-shaped rod 9 to move, the U-shaped rod 9 can drive the second piston 8 to move to the right side, negative pressure is formed in the pipette 7 at the moment, and therefore the blood can be sucked into the pipette through the catheter 13, and the operation effect is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a medical large-scale bone cement tucker, includes bobbin (1), pipe box (2), first piston (3) and piston rod (4), and pipe box (2) threaded connection fixes at bobbin (1) tip, and pipe box (2) tip has the discharge opening, and discharge opening surface screw thread fixedly connected with goes out mud pipe (5), its characterized in that: the inner side of the end part of the bobbin (1) is in threaded connection with a pressure relief device (6), the pressure relief device (6) comprises a fixed shell (601), a stop block (602) is fixedly arranged on the surface of one side of the fixed shell (601), a plurality of through holes (603) are formed in the surface of the stop block (602), a telescopic sleeve (604) is fixedly connected to the middle part of one side of the stop block (602), a spring (605) is arranged inside the telescopic sleeve (604), two ends of the spring (605) are respectively and fixedly connected with two ends of the telescopic sleeve (604), the side wall of the fixed shell (601) is provided with an annular convex block (606), one side of the annular convex block (606) is provided with a sealing block (607), one end of the telescopic sleeve (604) is fixedly provided with a bearing (608), the middle part of the sealing block (607) is in threaded connection with a threaded rod (, the barrel (1) side wall is provided with a liquid suction pipe (7), a second piston (8) is arranged in the liquid suction pipe (7), a U-shaped rod (9) is fixedly arranged on one side of the second piston (8), a sliding groove (10) is formed in the side wall of the liquid suction pipe (7), a sliding block (11) is arranged in the sliding groove (10) in a sliding mode, and the other end of the U-shaped rod (9) of the sliding block (11) is fixedly connected with the side wall of the sliding block (11).

2. The medical large bone cement filler as claimed in claim 1, wherein: the side wall of the bobbin (1) is fixedly provided with a buckle (12), the surface of the pipette (7) is provided with an annular groove, and the annular groove is matched with the buckle (12).

3. The medical large bone cement filler as claimed in claim 1, wherein: the end part of the pipette (7) is fixedly connected with a liquid guide pipe (13), and the liquid guide pipe (13) and the mud outlet pipe (5) are mutually fixed through an adhesive tape.

4. The medical large bone cement filler as claimed in claim 1, wherein: the end part of the bobbin (1) is provided with a handle part.

5. The medical large bone cement filler as claimed in claim 1, wherein: the side wall of the bobbin (1) is provided with an observation window, and the surface of the observation window is provided with a scale strip.

6. The medical large bone cement filler as claimed in claim 1, wherein: the end surface of the fixed shell (601) is provided with a placing groove for placing a wrench.