CN114343818B - Medical bone cement injector capable of self-stirring and conveying - Google Patents
Medical bone cement injector capable of self-stirring and conveying Download PDFInfo
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- CN114343818B CN114343818B CN202210021803.XA CN202210021803A CN114343818B CN 114343818 B CN114343818 B CN 114343818B CN 202210021803 A CN202210021803 A CN 202210021803A CN 114343818 B CN114343818 B CN 114343818B
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Abstract
The invention discloses a medical bone cement injector capable of self-stirring and conveying, which comprises a bone cement injection cylinder, wherein one end of the bone cement injection cylinder is connected with an end cover through threads, a pressure release mechanism is arranged in the end cover, the other end of the bone cement injection cylinder is connected with a filtering mechanism through threads, one end, far away from the bone cement injection cylinder, of the filtering mechanism is detachably connected with an extension input pipe, the tail end of the extension input pipe is detachably connected with a puncture mechanism, a pushing mechanism penetrates through the end cover, and the pushing mechanism penetrates through the end cover and extends into the bone cement injection cylinder. The invention can stir the bone cement in the bone cement injection cylinder, thereby reducing the preparation time of the bone cement, continuously and uniformly conveying the bone cement, avoiding the situation that the bone cement is divided into a plurality of times to cause the boundary of the bone cement and further reduce the mechanical strength, and preventing the bone cement from leaking into the periphery of target bone tissues and blood vessels by rotating the adjusting screw to remove the pressure in the bone cement injection cylinder.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a self-stirring conveying medical bone cement injector.
Background
Minimally invasive spinal surgery has been developed in recent years, and the applicant has previously filed patents for bone cement fillers by injecting bone cement into the vertebral body to increase the strength and stability of the vertebral body, and has been clinically used in combination with a vertebral body forming kit for treating vertebral body compression fracture-percutaneous vertebroplasty of the lower thoracic and lumbar vertebrae caused by vertebral body tumors, osteoporosis or trauma. In the operation, the injection tube and the mesh bag are sent into the vertebral body along the working channel, and bone cement or other bone materials are injected into the mesh bag by using the screw propeller, so that the collapsed vertebral body is lifted, the intensity of the vertebral body is increased, and the pain is relieved.
The bone cement clinically cited at present is mainly polymethyl acrylate bone cement, and the monomer of the polymethyl acrylate bone cement is colorless liquid with strong pungent smell, has volatility and cytotoxicity, and AzharDA and the like (Dentatamialsjurnal, 3 rd 2013) prove that the inhalation of the monomer can cause the injury of respiratory tract mucous membrane, lung tissue necrosis, stomatitis, terminal nerve paresthesia, hepatotoxicity and the like. In general, bone cement stirring is usually carried out in an exposed state during operation, namely, polymethyl acrylate powder is placed in a wide-mouth container, and then monomers are poured into the container and stirred for blending. When the bone cement is stirred, the volatilization of the monomer is increased, and the airtight environment of an operating room makes the volatilized monomer into the air difficult to discharge, and finally, the volatilized monomer is mostly absorbed by doctors and patients.
Meanwhile, the bone cement is easy to mix with gas in the stirring process, small bubbles can be formed when the bone cement is subjected to a wire drawing period and a dough period before solidification, and the bone cement is difficult to overflow. The bone cement with bubbles is poured into the bone tissue, and the bubbles can prevent the bone cement from contacting the bone tissue, so that gaps are formed between the bone cement and surrounding bone tissue, the binding force is reduced, the holding force of the bone tissue on the bone cement is weakened, and the fracture occurs again.
In the prior art, bone cement injectors having a stirring function generally employ a concept in which a stirrer and an injection piston are separately designed. The bone cement is mixed by using a stirrer, and then the stirrer is taken out for injection of the bone cement. In the operation process, obvious material waste and complicated operation process can be caused, the stirring injection time is greatly prolonged, and the method is not suitable for rapidly curing bone cement.
Disclosure of Invention
The invention aims to provide a medical bone cement injector capable of self-stirring and conveying so as to solve the problems in the background art.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a from medical bone cement injector of stirring transport, includes bone cement injection section of thick bamboo, the one end of bone cement injection section of thick bamboo has the end cover through threaded connection, be equipped with relief mechanism in the end cover, and the other end has filtering mechanism through threaded connection, filtering mechanism is connected with extension input tube from the one end of bone cement injection section of thick bamboo can be dismantled, the end of extension input tube can be dismantled and be connected with piercing depth, it is equipped with pushing mechanism to run through on the end cover, pushing mechanism runs through the end cover and extends to the inside of bone cement injection section of thick bamboo.
Further, the bone cement injection cylinder comprises a first inner cavity and a second inner cavity which are communicated with each other, the inner diameter of the first inner cavity is larger than that of the second inner cavity, one end of the second inner cavity, which is far away from the first inner cavity, is fixedly provided with a discharge plate, one side center of the discharge plate, which is far away from the filtering mechanism, is provided with a limit groove, a plurality of discharge holes are circumferentially formed in the discharge plate, and the outer surface of the bone cement injection cylinder is provided with a first scale.
Further, the relief mechanism is including the recess of symmetry locating the end cover both sides, the recess inner wall runs through threaded connection has adjusting screw, adjusting screw's tip fixedly connected with compresses tightly the circular cone, the bilateral symmetry of compressing tightly the circular cone is equipped with the fixing base, the oil storage chamber has been seted up to the inboard of fixing base, the oil storage chamber is L shape, the oil storage intracavity is filled with hydraulic oil, the oil storage chamber is close to the one end of compressing tightly the circular cone and runs through and be equipped with first depression bar, the one end of first depression bar extends to the oil storage intracavity and fixedly connected with first piston, and the other end fixedly connected with contact ball, be connected with reset spring between contact ball and the fixing base, the other end of oil storage chamber runs through and is equipped with the second depression bar, the one end of second depression bar extends to the second piston of oil storage intracavity, and other end fixedly connected with relief plate, relief plate and pushing mechanism looks adaptation.
Further, the filter mechanism comprises a valve body, the inboard of valve body is equipped with the valve ball, the through-hole has been seted up to the inboard of valve ball, fixed mounting has the filter screen in the through-hole, one side fixedly connected with bull stick of valve ball, the tip of bull stick extends to one side and the fixedly connected with knob of valve body, one side of valve body is equipped with the discharge gate, fixed mounting has first connector on the discharge gate, the outer wall of valve ball is fixed to be inlayed and is equipped with first sealing washer.
Further, one end of the extension input pipe is provided with a first luer connector, the first luer connector is connected with the first connector, the other end of the extension input pipe is provided with a second luer connector, and the second luer connector is connected with the puncture mechanism.
Further, the puncture mechanism comprises a puncture needle, a needle handle is fixedly connected to the top of the puncture needle, a second connector is arranged at the top of the needle handle, the second connector is matched with the second luer connector, a pushing rod is arranged on the inner side of the puncture needle, a pushing handle is fixed to the top of the pushing rod, and a second scale is arranged on the surface of the puncture needle.
Further, pushing mechanism includes the push-and-pull rod, push-and-pull handle is fixed mounting to the one end of push-and-pull rod, and the other end extends to in the bone cement injection cylinder and fixed mounting has the propelling movement piston, the outer wall of propelling movement piston inlays and is equipped with the second sealing washer, the inboard of push-and-pull rod is run through and is equipped with the puddler, the one end fixedly connected with knob of puddler, and the other end runs through propelling movement piston and fixedly connected with helical blade, helical blade's terminal fixed mounting has spacing post, spacing post and spacing groove looks adaptation.
Further, a third sealing ring is fixedly embedded on the inner side of the pushing piston, and the third sealing ring is in friction connection with the stirring rod.
Further, fixed cover in the outside of pjncture needle is equipped with fixed subassembly, fixed subassembly includes the sleeve pipe, sheathed tube outside threaded connection has the holding ring, follow equidistant a plurality of positioning screw that runs through on the holding ring along the circumferencial direction, the bottom fixedly connected with spacer of positioning screw, the bottom bonding of spacer has double faced adhesive tape, the equal fixedly connected with spacing ring in sheathed tube upper and lower both ends.
Further, the positioning screw is provided with four, and four threaded holes matched with the positioning screw are formed in the circumferential direction of the positioning ring.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the bone cement injection cylinder, the extension input pipe and the puncture mechanism are arranged, the end cover is firstly arranged at one end of the bone cement injection cylinder, then liquid and bone cement powder are sequentially input from the other end of the bone cement injection cylinder, the filter mechanism is arranged at the other end of the bone cement injection cylinder, then the stirring rod is moved up and down and rotated for a plurality of times, so that the spiral blade fully stirs the bone cement, after stirring, the puncture mechanism is arranged at the tail end of the extension input pipe, the puncture needle is arranged through the second luer connector, then the push-pull rod is pushed, the push-pull rod drives the pushing piston to push the bone cement into the second cavity from the first cavity, when filling the bone cement, the stirring rod only needs to rotate, the spiral blade is driven to rotate, the bone cement is extruded through the discharge hole on the discharge plate and pushed into the extension input pipe, and then the filter screen in the puncture mechanism is prolonged, so that continuous and uniform conveying of the bone cement is realized, and the filter screen in the filter mechanism can disperse the bone cement, so that the air bubbles in the bone cement are broken and the bone cement is favorable for improving the quality of the bone cement;
2. according to the invention, the pressure release mechanism and the fixing assembly are arranged, the compression cone is driven to move towards the inner side of the end cover by rotating the adjusting screw, then the compression cone presses the contact ball, then the contact ball drives the first piston to move through the first pressure rod, and drives the second pressure rod and the second piston to move through the hydraulic oil, and then the second pressure rod drives the pressure release plate to be in close contact with the surface of the push-pull rod, so that the air pressure inside the bone cement injection cylinder is kept stable, the adjusting screw is reversely rotated, the pressure release plate is separated from the surface of the push-pull rod, and therefore, the residual pressure inside the bone cement injection cylinder is removed, and damage to a patient caused by leakage of the bone cement is prevented; the positioning ring is rotated, so that the positioning ring moves up and down on the outer side of the sleeve, the distance between the positioning ring and the skin around the target bone part is adjusted, after adjustment is finished, the positioning screw is rotated, and the positioning screw drives the positioning sheet to be adhered on the skin around the target bone tissue, so that the puncture needle is fixed, the bone cement injection position is accurately positioned, and the bone cement injection process is prevented from being deviated.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is an enlarged schematic view of the structure of FIG. 1 according to the present invention;
FIG. 3 is an enlarged schematic view of the structure of the present invention at B in FIG. 2;
FIG. 4 is an enlarged schematic view of the structure of FIG. 1 according to the present invention;
FIG. 5 is an enlarged schematic view of the structure of the invention at D in FIG. 1;
FIG. 6 is a front view of the lancing mechanism and securing assembly of the present invention;
FIG. 7 is a front view of the needle and pusher bar of the present invention;
FIG. 8 is a front view of the bone cement injection cartridge of the present invention;
in the figure: 1. a bone cement injection cylinder; 2. an end cap; 3. a pressure release mechanism; 31. a groove; 32. adjusting a screw; 33. a compaction cone; 34. a fixing seat; 35. an oil storage chamber; 36. a first compression bar; 37. a first piston; 38. a contact ball; 39. a second compression bar; 310. a second piston; 311. a pressure relief plate; 312. a return spring; 4. a filtering mechanism; 41. a valve body; 42. a valve ball; 43. a through hole; 44. a filter screen; 45. a rotating rod; 46. a first knob; 47. a discharge nozzle; 48. a first connector; 49. a first seal ring; 5. extending the input tube; 51. a first luer fitting; 52. a second luer fitting; 6. a puncture mechanism; 61. a puncture needle; 62. a needle handle; 63. a second connector; 64. a pushing rod; 65. a pushing handle; 66. a second scale; 7. a pushing mechanism; 71. a push-pull rod; 72. push-pull handle; 73. pushing the piston; 74. a second seal ring; 75. a stirring rod; 76. a second knob; 77. a helical blade; 78. a limit column; 79. a third seal ring; 8. a first lumen; 9. a second lumen; 10. a discharge plate; 11. a limit groove; 12. a discharge hole; 13. a first scale; 14. a fixing assembly; 141. a sleeve; 142. a positioning ring; 143. positioning a screw; 144. a positioning sheet; 145. double faced adhesive tape; 146. and a limiting ring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, the invention provides a medical bone cement injector capable of self-stirring and conveying, which comprises a bone cement injection cylinder 1, wherein one end of the bone cement injection cylinder 1 is connected with an end cover 2 through threads, a pressure release mechanism 3 is arranged in the end cover 2, the other end of the bone cement injection cylinder is connected with a filter mechanism 4 through threads, one end of the filter mechanism 4, which is far away from the bone cement injection cylinder 1, is detachably connected with an extension input pipe 5, the tail end of the extension input pipe 5 is detachably connected with a puncture mechanism 6, a pushing mechanism 7 is arranged on the end cover 2 in a penetrating manner, the pushing mechanism 7 penetrates through the end cover 2 and extends into the bone cement injection cylinder 1, the end cover 2 and the filter mechanism 4 are firstly respectively arranged at two ends of the bone cement injection cylinder 1 through threads, and then bone cement is stirred and pushed through the pushing mechanism 7.
In a preferred embodiment, the bone cement injection cylinder 1 comprises a first inner cavity 8 and a second inner cavity 9 which are mutually communicated, the inner diameter of the first inner cavity 8 is larger than that of the second inner cavity 9, one end, far away from the first inner cavity 8, of the second inner cavity 9 is fixedly provided with a discharge plate 10, a limit groove 11 is formed in the center of one side, far away from the filtering mechanism 4, of the discharge plate 10, a plurality of discharge holes 12 are formed in the discharge plate 10 along the circumferential direction, a first scale 13 is formed in the outer surface of the bone cement injection cylinder 1, and bone cement is pushed into the filtering mechanism 4 through the discharge holes 12 in the discharge plate 10 by the pushing mechanism 7.
In a preferred embodiment, the pressure release mechanism 3 includes a groove 31 symmetrically disposed at two sides of the end cover 2, an adjusting screw 32 is connected through threads on an inner wall of the groove 31, a compression cone 33 is fixedly connected at an end portion of the adjusting screw 32, fixing seats 34 are symmetrically disposed at two sides of the compression cone 33, an oil storage cavity 35 is disposed at an inner side of the fixing seats 34, the oil storage cavity 35 is L-shaped, hydraulic oil is filled in the oil storage cavity 35, a first compression rod 36 is disposed at one end of the oil storage cavity 35 near the compression cone 33 in a penetrating manner, one end of the first compression rod 36 extends into the oil storage cavity 35 and is fixedly connected with a first piston 37, a contact ball 38 is fixedly connected at the other end of the first compression rod, a return spring 312 is connected between the contact ball 38 and the fixing seats 34, a second compression rod 39 is disposed at the other end of the oil storage cavity 35 in a penetrating manner, one end of the second pressing rod 39 extends to the oil storage cavity 35 and is fixedly connected with the second piston 310, the other end of the second pressing rod 39 is fixedly connected with the pressure release plate 311, the pressure release plate 311 is matched with the pushing mechanism 7, the pressing cone 33 is driven to move towards the inner side of the end cover 2 by rotating the adjusting screw 32, the pressing cone 33 is then pressed against the contact ball 38, the contact ball 38 is then driven to move the first piston 37 by the first pressing rod 36, the second pressing rod 39 and the second piston 310 are driven to move by hydraulic oil, the second pressing rod 39 is then driven to tightly contact the pressure release plate 311 with the surface of the push-pull rod 71, so that the pressure inside the bone cement injection cylinder 1 is kept stable, the pressure release plate 311 is separated from the surface of the push-pull rod 71 by reversely rotating the adjusting screw 32, the residual pressure inside the bone cement injection cylinder 1 is removed, and damage to a patient caused by leakage of bone cement is prevented.
In a preferred embodiment, the filtering mechanism 4 includes a valve body 41, a valve ball 42 is disposed on the inner side of the valve body 41, a through hole 43 is formed on the inner side of the valve ball 42, a filter screen 44 is fixedly installed in the through hole 43, a rotating rod 45 is fixedly connected to one side of the valve ball 42, an end portion of the rotating rod 45 extends to one side of the valve body 41 and is fixedly connected with a first knob 46, a discharging nozzle 47 is disposed on one side of the valve body 41, a first connecting joint 48 is fixedly installed on the discharging nozzle 47, a first sealing ring 49 is fixedly embedded on the outer wall of the valve ball 42, the rotating rod 45 is driven to rotate ninety degrees through the first knob 46, the rotating rod 45 is then driven to rotate ninety degrees, the through hole 43 in the valve ball 42 is disconnected from the bone cement injection cylinder 1, the filter screen 44 can disperse bone cement, and air bubbles in the bone cement are broken and split, so that the quality of the bone cement is improved.
In a preferred embodiment, one end of the extension input tube 5 is provided with a first luer connector 51, the first luer connector 51 is connected with the first connector 48, the other end of the extension input tube 5 is provided with a second luer connector 52, the second luer connector 52 is connected with the puncturing mechanism 6, and in use, the first luer connector 51 is connected with the first connector 48, and the second luer connector 52 is connected with the puncturing mechanism 6.
In a preferred embodiment, the puncture mechanism 6 includes a puncture needle 61, a needle handle 62 is fixedly connected to the top of the puncture needle 61, a second connector 63 is provided at the top of the needle handle 62, the second connector 63 is adapted to the second luer connector 52, a pushing rod 64 is provided at the inner side of the puncture needle 61, a pushing handle 65 is fixed to the top of the pushing rod 64, a second scale 66 is provided on the surface of the puncture needle, the puncture needle 61 is first connected to the extension input tube 5 through the second luer connector 52, the puncture needle 61 is then pierced into the vertebral body for filling bone cement, the injection depth is obtained by observing the second scale 66, after the injection, the puncture needle 61 and the extension input tube 5 are separated, the pushing rod 64 is inserted into the puncture needle 61, then the pushing rod 64 is rotated for ninety degrees, bone cement in the puncture needle 61 is separated from bone cement in the vertebral body, and then the puncture needle 61 is pulled out.
In a preferred embodiment, the pushing mechanism 7 includes a push-pull rod 71, one end of the push-pull rod 71 is fixedly provided with a push-pull handle 72, the other end of the push-pull rod extends into the bone cement injection cylinder 1 and is fixedly provided with a pushing piston 73, a second sealing ring 74 is embedded on the outer wall of the pushing piston 73, a stirring rod 75 penetrates through the inner side of the push-pull rod 71, one end of the stirring rod 75 is fixedly connected with a second knob 76, the other end of the stirring rod penetrates through the pushing piston 73 and is fixedly connected with a spiral blade 77, the tail end of the spiral blade 77 is fixedly provided with a limit post 78, the limit post 78 is matched with the limit groove 11, the push-pull rod 71 drives the pushing piston 73 to squeeze bone cement from the first inner cavity 8 into the second inner cavity 9, the push-pull rod 71 is continuously pushed until the bone cement is pushed into the extension input pipe 5 and the bone cement is extruded from the tail end of the extension input pipe 5, then the puncture mechanism 6 is arranged at the tail end of the extension input pipe 5, the puncture needle 61 is installed through the second luer 52, and when the bone cement is filled, the stirring rod 75 is required to be rotated, and the cement is continuously extruded through the spiral blade 75, so that the cement is continuously discharged through the continuous discharge hole 12.
In a preferred embodiment, a third sealing ring 79 is fixedly embedded in the inner side of the pushing piston 73, and the third sealing ring 79 is in friction connection with the stirring rod 75, so that not only is leakage of bone cement prevented during stirring, but also the bone cement injection cylinder 1 is prevented from entering external air to cause air bubbles in the bone cement, thereby improving the quality of the bone cement.
In a preferred embodiment, the fixing assembly 14 is fixedly sleeved on the outer side of the puncture needle 61, the fixing assembly 14 comprises a sleeve 141, a positioning ring 142 is connected to the outer side of the sleeve 141 in a threaded manner, a plurality of positioning screws 143 are arranged on the positioning ring 142 at equal intervals along the circumferential direction, positioning pieces 144 are fixedly connected to the bottoms of the positioning screws 143, double-sided adhesives 145 are adhered to the bottoms of the positioning pieces 144, limiting rings 146 are fixedly connected to the upper end and the lower end of the sleeve 141, the positioning ring 142 is rotated, the positioning ring 142 moves up and down on the outer side of the sleeve 141, the distance between the positioning ring 142 and the skin around the target bone part is adjusted, after adjustment is finished, the positioning screws 143 are rotated, the positioning pieces 144 are driven to be adhered to the skin around the target bone tissue, so that the puncture needle 61 is fixed, the position of bone cement injection is accurately positioned, and the bone cement injection process is prevented from being deviated.
In a preferred embodiment, the positioning screw 143 is provided with four positioning screws, the positioning ring 142 is provided with four threaded holes matched with the positioning screw 143 along the circumferential direction, and by arranging the limiting rings 146, the positioning ring 142 is prevented from being separated from the sleeve 141 when moving, and the three positioning screws 143 drive the positioning sheet 144 to be adhered to the skin around the target bone part, so that the stability of the puncture mechanism 6 is enhanced.
The working principle of the invention is as follows: firstly, an end cover 2 is arranged at one end of a bone cement injection cylinder 1, then liquid and bone cement powder are sequentially put into the bone cement injection cylinder 1 from the other end of the bone cement injection cylinder 1, then a filter mechanism 4 is arranged at the other end of the bone cement injection cylinder 1, then a stirring rod 75 is moved up and down for a plurality of times simultaneously, so that the bone cement is fully stirred by a spiral blade 77, after stirring, a puncture mechanism 6 is arranged at the tail end of an extension input pipe 5, a puncture needle 61 is arranged through a second luer connector 52, a push-pull rod 71 is pushed, the push-pull rod 71 drives a push-pull piston 73 to squeeze the bone cement from a first inner cavity 8 into a second inner cavity 9, when filling of the bone cement is started, only the stirring rod 75 is required to be rotated, the stirring rod 75 drives a spiral blade 77 to rotate, so that the bone cement is extruded through a discharge hole 12 on a discharge plate 10 and is squeezed into the extension input pipe 5, the bone cement is continuously and uniformly conveyed through the extension input pipe 5 into the puncture mechanism 6, and a filter screen 44 in the filter mechanism 4 can enable the bone cement to be dispersed into a smaller state, so that blockage is prevented;
by arranging the pressure release mechanism 3, the compression cone 33 is driven to move towards the inner side of the end cover 2 by rotating the adjusting screw 32, the compression cone 33 is then pressed against the contact ball 38, the contact ball 38 is then driven to move by the first compression rod 36, the second compression rod 39 and the second piston 310 are driven to move by hydraulic oil, the second compression rod 39 is then driven to tightly contact the surface of the pressure release plate 311 and the surface of the push-pull rod 71, so that the air pressure inside the bone cement injection cylinder 1 is kept stable, the pressure release plate 311 can be separated from the surface of the push-pull rod 71 by reversely rotating the adjusting screw 32, the residual pressure inside the bone cement injection cylinder 1 is removed, damage to a patient caused by leakage of the bone cement is prevented, the fixing assembly 14 is arranged, the positioning ring 142 is rotated, the positioning ring 142 is moved up and down outside the sleeve 141, the distance between the positioning ring 142 and the skin around the target bone part is adjusted, after adjustment, the positioning screw 143 is rotated, the positioning screw 143 drives the positioning piece 144 to be adhered on the skin around the target bone tissue, thereby fixing the puncture needle 61, the position of bone cement injection is accurately positioned, and the bone cement injection process is prevented from being deviated.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a medical bone cement injector of self-stirring transport, includes bone cement injection cylinder (1), its characterized in that: the bone cement injection cylinder (1) is characterized in that one end of the bone cement injection cylinder (1) is connected with an end cover (2) through threads, a pressure release mechanism (3) is arranged in the end cover (2), the pressure release mechanism (3) comprises grooves (31) symmetrically arranged on two sides of the end cover (2), an adjusting screw (32) is connected with the inner wall of the grooves (31) in a penetrating threaded manner, a compression cone (33) is fixedly connected with the end part of the adjusting screw (32), a fixing seat (34) is symmetrically arranged on two sides of the compression cone (33), an oil storage cavity (35) is formed in the inner side of the fixing seat (34), the oil storage cavity (35) is L-shaped, hydraulic oil is filled in the oil storage cavity (35), one end of the oil storage cavity (35) close to the compression cone (33) is penetrated and provided with a first compression rod (36), one end of the first compression rod (36) extends into the oil storage cavity (35) and is fixedly connected with a first piston (37), the other end of the first compression rod is fixedly connected with a contact ball (38), a reset spring (312) is connected between the contact ball (38) and the fixing seat (34), the other end of the compression ball is provided with a second compression rod (39), the second compression rod (310) is connected with a second compression rod (39) fixedly connected with the second compression rod (310), the pressure release plate (311) is matched with the pushing mechanism (7), the other end is connected with the filtering mechanism (4) through threads, one end of the filtering mechanism (4) away from the bone cement injection cylinder (1) is detachably connected with the extension input pipe (5), the tail end of the extension input pipe (5) is detachably connected with the puncture mechanism (6), the pushing mechanism (7) is arranged on the end cover (2) in a penetrating manner, and the pushing mechanism (7) penetrates through the end cover (2) and extends to the inside of the bone cement injection cylinder (1).
2. A self-stirring delivery medical bone cement injector as defined in claim 1, wherein: the bone cement injection cylinder (1) comprises a first inner cavity (8) and a second inner cavity (9) which are mutually communicated, the inner diameter of the first inner cavity (8) is larger than that of the second inner cavity (9), one end, far away from the first inner cavity (8), of the second inner cavity (9) is fixedly provided with a discharge plate (10), one side center, far away from the filtering mechanism (4), of the discharge plate (10) is provided with a limit groove (11), a plurality of discharge holes (12) are circumferentially formed in the discharge plate (10), and the outer surface of the bone cement injection cylinder (1) is provided with a first scale (13).
3. A self-stirring delivery medical bone cement injector as defined in claim 1, wherein: the filter mechanism (4) comprises a valve body (41), a valve ball (42) is arranged on the inner side of the valve body (41), a through hole (43) is formed in the inner side of the valve ball (42), a filter screen (44) is fixedly installed in the through hole (43), a rotating rod (45) is fixedly connected to one side of the valve ball (42), the end portion of the rotating rod (45) extends to one side of the valve body (41) and is fixedly connected with a first knob (46), a discharging nozzle (47) is arranged on one side of the valve body (41), a first connecting joint (48) is fixedly installed on the discharging nozzle (47), and a first sealing ring (49) is fixedly embedded in the outer wall of the valve ball (42).
4. A self-stirring delivery medical bone cement injector as in claim 3, wherein: one end of the extension input pipe (5) is provided with a first luer connector (51), the first luer connector (51) is connected with a first connector (48), the other end of the extension input pipe (5) is provided with a second luer connector (52), and the second luer connector (52) is connected with a puncture mechanism (6).
5. A self-stirring delivery medical bone cement injector as defined in claim 4, wherein: the puncture mechanism (6) comprises a puncture needle (61), a needle handle (62) is fixedly connected to the top of the puncture needle (61), a second connector (63) is arranged at the top of the needle handle (62), the second connector (63) is matched with the second luer connector (52), a pushing rod (64) is arranged on the inner side of the puncture needle (61), a pushing handle (65) is fixed to the top of the pushing rod (64), and a second scale (66) is arranged on the surface of the puncture needle.
6. A self-stirring delivery medical bone cement injector as defined in claim 2, wherein: push mechanism (7) are including push-and-pull rod (71), push-and-pull handle (72) is fixed mounting to the one end of push-and-pull rod (71), and the other end extends to in bone cement injection cylinder (1) and fixed mounting has push piston (73), the outer wall of push piston (73) is inlayed and is equipped with second sealing washer (74), the inboard of push-and-pull rod (71) is run through and is equipped with puddler (75), one end fixedly connected with second knob (76) of puddler (75), and the other end runs through push piston (73) and fixedly connected with helical blade (77), the terminal fixed mounting of helical blade (77) has spacing post (78), spacing post (78) and spacing groove (11) looks adaptation.
7. The self-stirring delivery medical bone cement injector of claim 6, wherein: and a third sealing ring (79) is fixedly embedded at the inner side of the pushing piston (73), and the third sealing ring (79) is in friction connection with the stirring rod (75).
8. A self-stirring delivery medical bone cement injector as defined in claim 5, wherein: the outside fixed cover of pjncture needle (61) is equipped with fixed subassembly (14), fixed subassembly (14) are including sleeve pipe (141), the outside threaded connection of sleeve pipe (141) has holding ring (142), equidistant running through along the circumferencial direction on holding ring (142) is equipped with a plurality of locating screw (143), the bottom fixedly connected with spacer (144) of locating screw (143), the bottom bonding of spacer (144) has double faced adhesive tape (145), the equal fixedly connected with spacing ring (146) in upper and lower both ends of sleeve pipe (141).
9. A self-stirring delivery medical bone cement injector as recited in claim 8, wherein: the positioning screw rods (143) are provided with four threaded holes which are matched with the positioning screw rods (143) along the circumferential direction, and the positioning rings (142) are provided with four threaded holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3108835A1 (en) * | 2015-06-24 | 2016-12-28 | Université de Strasbourg | Injection device of bone cement for percutaneous vertebroplasty |
| CN106901823A (en) * | 2017-01-22 | 2017-06-30 | 常州百隆微创医疗器械科技有限公司 | A kind of quick pressure releasing injection-type Cement fixation device |
| CN108065999A (en) * | 2016-11-11 | 2018-05-25 | 贺利氏医疗有限公司 | For storing and mixing the device and method of bone cement |
| CN209474773U (en) * | 2018-10-22 | 2019-10-11 | 中山市世医堂医疗器械有限公司 | A kind of surgical instrument for vertebral plasty |
| CN211583440U (en) * | 2020-01-19 | 2020-09-29 | 苏州微创脊柱创伤医疗科技有限公司 | Bone cement stirring injector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9445854B2 (en) * | 2008-02-01 | 2016-09-20 | Dfine, Inc. | Bone treatment systems and methods |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3108835A1 (en) * | 2015-06-24 | 2016-12-28 | Université de Strasbourg | Injection device of bone cement for percutaneous vertebroplasty |
| CN108065999A (en) * | 2016-11-11 | 2018-05-25 | 贺利氏医疗有限公司 | For storing and mixing the device and method of bone cement |
| CN106901823A (en) * | 2017-01-22 | 2017-06-30 | 常州百隆微创医疗器械科技有限公司 | A kind of quick pressure releasing injection-type Cement fixation device |
| CN209474773U (en) * | 2018-10-22 | 2019-10-11 | 中山市世医堂医疗器械有限公司 | A kind of surgical instrument for vertebral plasty |
| CN211583440U (en) * | 2020-01-19 | 2020-09-29 | 苏州微创脊柱创伤医疗科技有限公司 | Bone cement stirring injector |
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| CN114343818A (en) | 2022-04-15 |
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