CN103251443A - Bone cement pushing and injecting pump - Google Patents
Bone cement pushing and injecting pump Download PDFInfo
- Publication number
- CN103251443A CN103251443A CN2012100348256A CN201210034825A CN103251443A CN 103251443 A CN103251443 A CN 103251443A CN 2012100348256 A CN2012100348256 A CN 2012100348256A CN 201210034825 A CN201210034825 A CN 201210034825A CN 103251443 A CN103251443 A CN 103251443A
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- China
- Prior art keywords
- push rod
- bone cement
- overcoat
- pump
- protecting cover
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Abstract
The invention relates to a bone cement pushing and injecting pump which comprises a jacket with a Luer joint arranged on the front end face, a push pod with a handle arranged at the rear end, and a protecting cover in threaded connection with the rear end of the jacket. An internal threaded hole is arranged at the rear end of the protecting cover, the push rod is in threaded connection with the protecting cover and is positioned in the jacket, the push rod and an inner cavity of the jacket form relative rotation and piston-type sliding fit, and a sealing member is arranged between the outer peripherical face and the inner wall of the jacket. Most part, contacting with bone cement, in the bone cement pushing and injecting pump is the push rod made of hard plastic, and an interval between the push rod and the jacket is quite small, so that the bone cement contacting with an O-shaped ring playing a role in sealing can be very small, and sealability and fallback of the push rod cannot be influenced; and a pressure gauge is added to display pressure of bone cement filling in real time to prevent overlarge pressure, quantified data is provided for clinic operations, and operations can be more controllable and safer.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, relate in particular to a kind of bone cement and inject pump.
Background technology
Compression fracture of vertabral body is the sufferers of osteoporosis face most common complication, and open operation treatment wound in the past is big, and complication is many.And percutaneous vertebral body plastic operation (PVP) and percutaneous kyphoplasty art (PKP) are spinal surgery development in recent years novel micro-wound surgical operations rapidly, directly inject or the implants such as bone cement, artificial bone of reinjecting by balloon expandable earlier in the compression vertebral body by percutaneous, thereby strengthen the mechanical stability of pathological changes vertebral body, clinical practice is verified, and it is reliable and stable, effective therapeutic effect rapidly, and complication is few.
A kind of bone cement injector is disclosed among the CN102008345, this injector comprises the overcoat that has female Luer, one end is provided with the push rod that handle, the other end are provided with plug, described push rod is provided with the plug end and inserts in the overcoat movably, the opening of described overcoat is provided with the blind nut that an inwall has screw thread, and the outer peripheral face of described push rod is provided with and the corresponding screw thread of described blind nut.
The sealing member that the push rod head adopts in the above-mentioned patent is traditional plug, when practical application, because bone cement is a kind of paste of thickness, and easily be attached on the inwall of overcoat, in injection process, can produce very big pressure to the sealing member side direction, plug is because surface strength is low, product distortion in injection process easily, cause bone cement to flow along deformation place, thus the product seepage, and plug is with after bone cement contacts in addition, can stick together, in the push rod rollback, can be easy to cause plug and push rod to break away from because traditional rubber stopper is very soft.
The bone cement injection operation is mainly used in treating osteoporosis, and in clinical course, bone cement is filled the situation that seepage always occurs, can have influence on patient's life security when serious.An immediate cause that produces the problems referred to above is exactly, and pressure is too big during filling, causes bone cement to be filled into the gap of loose sclerotin or directly to have broken through and penetrates into canalis spinalis, and patient's safety is arrived in crisis.
Summary of the invention
The objective of the invention is to overcome the defective of prior art and provide a kind of bone cement to inject pump, this is injected pump and can effectively be avoided bone cement to contact with the direct of sealing member, has guaranteed sealing, can also monitor the pressure of injecting in the pump simultaneously in real time.
The object of the present invention is achieved like this:
A kind of bone cement of the present invention is injected pump, comprise that front end face is provided with the overcoat of female Luer, the rear end is provided with the push rod of handle and the protecting cover that is threaded with described overcoat rear end, the rear end of described protecting cover is provided with internal thread hole, described push rod is threaded with described protecting cover, described push rod is positioned at described overcoat, form with the inner chamber of overcoat and to relatively rotate and piston type is slidingly matched, be provided with sealing member between the outer peripheral face of described push rod front end and the described outer casing inner wall.
Above-mentioned a kind of bone cement is injected pump, and wherein, described sealing member is O type circle.
Above-mentioned a kind of bone cement is injected pump, and wherein, the rear end of described overcoat is provided with the outside horn mouth in big footpath, and bell-mouthed opening is threaded with the front end of described protecting cover.
Above-mentioned a kind of bone cement is injected pump, and wherein, described bone cement is injected pump and comprised that also the pressure gauge connection and of being located at described overcoat front portion and being communicated with this overcoat inner chamber is installed on the pressure gauge on this pressure gauge connection.
Above-mentioned a kind of bone cement is injected pump, and wherein, described pressure gauge is Pressure gauge.
Above-mentioned a kind of bone cement is injected pump, and wherein, described bone cement is injected the prolongation pipe that pump comprises that also an end is connected with described overcoat female Luer, and the other end of this prolongation pipe is provided with a female Luer.
Above-mentioned a kind of bone cement is injected pump, and wherein, described prolongation pipe is made by multilayer materials.
Above-mentioned a kind of bone cement is injected pump, wherein, described push rod comprises anterior push rod and rear portion push rod, fixedly connected with the front end of described rear portion push rod in the rear end of described anterior push rod, the outer peripheral face of described anterior push rod front end is provided be used to the annular groove that holds described sealing ring, and described rear portion push rod is provided with the external screw thread that matches with described protecting cover internal thread hole.
Above-mentioned a kind of bone cement is injected pump, and wherein, the postmedian of described anterior push rod is provided with a ring for fixing, and this ring for fixing contacts with the front end of described rear portion push rod.
Above-mentioned a kind of bone cement is injected pump, and wherein, externally threaded pitch is 5 millimeters on the push rod of described rear portion, and the internal diameter of described overcoat is 15.8 millimeters.
Bone cement of the present invention is injected pump and is compared with prior art had the following advantages:
1. to inject the major part that contacts with bone cement in the pump be the rigid plastics push rod to bone cement of the present invention, gap between push rod and the outer casing inner wall is very little, the bone cement that contacts with the O type circle that plays sealing function like this can be considerably less, so just can not have influence on the rollback of sealing and push rod;
2. bone cement of the present invention injects that the pitch of screw thread is particular design on the pump push rod, and guaranteeing whenever turns around can push out the bone cement of 1ml from overcoat, thereby takes the accurate control of injection volume to;
3. bone cement of the present invention is injected pump has increased the pressure that a Pressure gauge shows that in real time bone cement is filled, and the excessive situation of pressure appears in control, also for clinical manipulation provides the data that quantize, is the controllable safety more of performing the operation simultaneously.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the cutaway view of Fig. 1.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
See also Fig. 1 and Fig. 2, there is shown bone cement of the present invention and inject pump, this bone cement is injected overcoat 1, the rear end that pump comprises that front end face is provided with female Luer 12 and is provided with the push rod 3 of handle 4, the protecting cover 2 that is threaded with overcoat 1 rear end, Pressure gauge 5 and prolongs pipe 6, be provided with sealing member 7 between the outer peripheral face of push rod 3 front ends and overcoat 1 inwall, the seal 7 is O type circle.
Above-mentioned bone cement is injected in the pump, the rear end of overcoat 1 is provided with the outside horn mouth in big footpath 13, the opening of horn mouth 13 is threaded with the front end of protecting cover 2, the rear end of protecting cover 2 is provided with internal thread hole 21, push rod 3 comprises anterior push rod 31 and rear portion push rod 32, fixedly connected with the front end of rear portion push rod 32 in the rear end of anterior push rod 31, the outer peripheral face of anterior push rod 31 front ends is provided be used to the annular groove 311 that holds sealing ring 7, rear portion push rod 32 is provided with the external screw thread that matches with protecting cover 2 internal thread holes 21, push rod 3 is realized being threaded with the internal thread hole 21 of protecting cover 2 by external screw thread, and push rod 3 is positioned at overcoat 1, the inner chamber formation of push rod 3 and overcoat 1 relatively rotates and piston type is slidingly matched, the postmedian of anterior push rod 31 is provided with a ring for fixing 312, and this ring for fixing 312 contacts with the front end of rear portion push rod 32.
Above-mentioned bone cement is injected in the pump, and overcoat 1 front portion is provided with pressure gauge connection 11 Pressure gauges 5 that are communicated with overcoat 1 inner chamber and is installed on this pressure gauge connection 11.
Above-mentioned bone cement is injected in the pump, an end that prolongs pipe 6 is connected with overcoat 1 female Luer 12, the other end is provided with a female Luer 61, the technology that this prolongation pipe 6 adopts multilamellar to extrude is made, can not only guarantee big internal diameter, can also guarantee to bear than higher pressure in the time of 80 degrees centigrade, be that bone cement is filled more desirable.
Above-mentioned bone cement is injected in the pump, and externally threaded pitch is 5 millimeters on the rear portion push rod 32, and the internal diameter H of overcoat 1 is 15.8 millimeters.
During use, outward winding earlier and take off protecting cover 2, bone cement is injected the inner chamber of overcoat 1, because overcoat 1 open rearward end place designs for horn mouth, can make things convenient for dosing of bone cement, dose finish after, rear portion push rod 32 is threaded with protecting cover, then anterior push rod 31 is fixed on the front end of rear portion push rod 32, again protecting cover 2 is threaded onto on the opening of horn mouth 13 of overcoat 1, prolong pipe 6 in the connection, get rid of air wherein, the female Luer 61 that prolongs pipe 6 is connected on other operating theater instruments, drive push rod 3 by rotary handle 4 and together rotate, and then the bone cement in the overcoat 1 pushed out, push rod 32 externally threaded pitch in rear portion are 5 millimeters internal diameter H that cooperate 15.8 millimeters in overcoat, and guaranteeing whenever turns around can push out the bone cement of 1ml from overcoat 1, thereby takes the accurate control of injection volume to, Pressure gauge 5 can show the pressure that bone cement is filled in real time simultaneously, and the excessive situation of pressure appears in control.
Because the major part that contacts with bone cement is the rigid plastics push rod, the gap between push rod and the outer casing inner wall is very little, and the bone cement that contacts with the O type circle that plays sealing function like this can be considerably less, so just can not have influence on the rollback of sealing and push rod.
Above embodiment is only for the usefulness that the present invention is described, but not limitation of the present invention, person skilled in the relevant technique, under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (10)
1. a bone cement is injected pump, comprise that front end face is provided with the overcoat of female Luer, the rear end is provided with the push rod of handle and the protecting cover that is threaded with described overcoat rear end, the rear end of described protecting cover is provided with internal thread hole, described push rod is threaded with described protecting cover, described push rod is positioned at described overcoat, form with the inner chamber of overcoat and to relatively rotate and piston type is slidingly matched, it is characterized in that, be provided with sealing member between the outer peripheral face of described push rod front end and the described outer casing inner wall.
2. a kind of bone cement as claimed in claim 1 is injected pump, it is characterized in that, described sealing member is O type circle.
3. a kind of bone cement as claimed in claim 1 is injected pump, it is characterized in that, the rear end of described overcoat is provided with the outside horn mouth in big footpath, and bell-mouthed opening is threaded with the front end of described protecting cover.
4. a kind of bone cement as claimed in claim 1 is injected pump, it is characterized in that, described bone cement is injected pump and comprised that also the pressure gauge connection and of being located at described overcoat front portion and being communicated with this overcoat inner chamber is installed on the pressure gauge on this pressure gauge connection.
5. a kind of bone cement as claimed in claim 4 is injected pump, it is characterized in that, described pressure gauge is Pressure gauge.
6. inject pump as each described a kind of bone cement of claim 1 to 5, it is characterized in that, described bone cement is injected the prolongation pipe that pump comprises that also an end is connected with described overcoat female Luer, and the other end of this prolongation pipe is provided with a female Luer.
7. a kind of bone cement as claimed in claim 6 is injected pump, it is characterized in that, described prolongation pipe is made by multilayer materials.
8. a kind of bone cement as claimed in claim 1 is injected pump, it is characterized in that, described push rod comprises anterior push rod and rear portion push rod, fixedly connected with the front end of described rear portion push rod in the rear end of described anterior push rod, the outer peripheral face of described anterior push rod front end is provided be used to the annular groove that holds described sealing ring, and described rear portion push rod is provided with the external screw thread that matches with described protecting cover internal thread hole.
9. a kind of bone cement as claimed in claim 8 is injected pump, it is characterized in that, the postmedian of described anterior push rod is provided with a ring for fixing, and this ring for fixing contacts with the front end of described rear portion push rod.
10. a kind of bone cement as claimed in claim 8 is injected pump, it is characterized in that, externally threaded pitch is 5 millimeters on the push rod of described rear portion, and the internal diameter of described overcoat is 15.8 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100348256A CN103251443A (en) | 2012-02-16 | 2012-02-16 | Bone cement pushing and injecting pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100348256A CN103251443A (en) | 2012-02-16 | 2012-02-16 | Bone cement pushing and injecting pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103251443A true CN103251443A (en) | 2013-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100348256A Pending CN103251443A (en) | 2012-02-16 | 2012-02-16 | Bone cement pushing and injecting pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103251443A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111096785A (en) * | 2020-01-19 | 2020-05-05 | 广州莱瑞医疗科技有限公司 | Bone cement pouring device and pouring method thereof |
| CN113143437A (en) * | 2021-04-07 | 2021-07-23 | 苏州欣荣博尔特医疗器械有限公司 | Bone cement injection device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7134782B2 (en) * | 2001-07-16 | 2006-11-14 | Stryker Instruments | Bone cement mixing and delivery device with releasable mixing blade |
| CN2882555Y (en) * | 2005-12-29 | 2007-03-28 | 陈亚平 | Spiral bone cement propeller |
| US20070093759A1 (en) * | 2005-09-26 | 2007-04-26 | Isotis Orthobiologics, Inc. | High viscosity material delivery system |
| CN201001761Y (en) * | 2007-01-26 | 2008-01-09 | 华东理工大学 | Micro wound therapeutic system for vertebral collapse and compression fracture |
| CN201182641Y (en) * | 2008-04-22 | 2009-01-21 | 上海凯利泰医疗科技有限公司 | Boosting device for filling bone cement in percutaneous vertebral plastic operation |
| CN201624757U (en) * | 2009-07-17 | 2010-11-10 | 徐世隆 | Vertebral body kyphoplasty surgical instrument |
| CN101977569A (en) * | 2008-03-24 | 2011-02-16 | 泰尔茂株式会社 | Bone cement injecting tool |
| WO2011021072A1 (en) * | 2009-08-20 | 2011-02-24 | Tecres S.P.A. | Bone cement mixer |
| CN102009438A (en) * | 2010-01-04 | 2011-04-13 | 上海康德莱企业发展集团医疗器械有限公司 | Bone cement stirrer |
| CN102008345A (en) * | 2010-01-04 | 2011-04-13 | 上海康德莱企业发展集团医疗器械有限公司 | Bone cement injector for minimally invasive surgery |
| CN202515744U (en) * | 2012-02-16 | 2012-11-07 | 上海康德莱企业发展集团医疗器械有限公司 | Bone cement push-injection pump |
-
2012
- 2012-02-16 CN CN2012100348256A patent/CN103251443A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7134782B2 (en) * | 2001-07-16 | 2006-11-14 | Stryker Instruments | Bone cement mixing and delivery device with releasable mixing blade |
| US20070093759A1 (en) * | 2005-09-26 | 2007-04-26 | Isotis Orthobiologics, Inc. | High viscosity material delivery system |
| CN2882555Y (en) * | 2005-12-29 | 2007-03-28 | 陈亚平 | Spiral bone cement propeller |
| CN201001761Y (en) * | 2007-01-26 | 2008-01-09 | 华东理工大学 | Micro wound therapeutic system for vertebral collapse and compression fracture |
| CN101977569A (en) * | 2008-03-24 | 2011-02-16 | 泰尔茂株式会社 | Bone cement injecting tool |
| CN201182641Y (en) * | 2008-04-22 | 2009-01-21 | 上海凯利泰医疗科技有限公司 | Boosting device for filling bone cement in percutaneous vertebral plastic operation |
| CN201624757U (en) * | 2009-07-17 | 2010-11-10 | 徐世隆 | Vertebral body kyphoplasty surgical instrument |
| WO2011021072A1 (en) * | 2009-08-20 | 2011-02-24 | Tecres S.P.A. | Bone cement mixer |
| CN102009438A (en) * | 2010-01-04 | 2011-04-13 | 上海康德莱企业发展集团医疗器械有限公司 | Bone cement stirrer |
| CN102008345A (en) * | 2010-01-04 | 2011-04-13 | 上海康德莱企业发展集团医疗器械有限公司 | Bone cement injector for minimally invasive surgery |
| CN202515744U (en) * | 2012-02-16 | 2012-11-07 | 上海康德莱企业发展集团医疗器械有限公司 | Bone cement push-injection pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111096785A (en) * | 2020-01-19 | 2020-05-05 | 广州莱瑞医疗科技有限公司 | Bone cement pouring device and pouring method thereof |
| CN113143437A (en) * | 2021-04-07 | 2021-07-23 | 苏州欣荣博尔特医疗器械有限公司 | Bone cement injection device |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130821 |