CN202515744U - Bone cement push-injection pump - Google Patents
Bone cement push-injection pump Download PDFInfo
- Publication number
- CN202515744U CN202515744U CN2012200496338U CN201220049633U CN202515744U CN 202515744 U CN202515744 U CN 202515744U CN 2012200496338 U CN2012200496338 U CN 2012200496338U CN 201220049633 U CN201220049633 U CN 201220049633U CN 202515744 U CN202515744 U CN 202515744U
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- China
- Prior art keywords
- push rod
- bone cement
- overcoat
- pump
- injected
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- Expired - Fee Related
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Abstract
The utility model relates to a bone cement push-injection pump, comprising a jacket with a Luer joint at the front end face thereof, a push rod with a handle at the rear end thereof, and a protective cover in threaded connection with the rear end of the jacket, wherein an internal threaded hole is formed at the rear end of the protective cover; the push rod is in threaded connection with the protective cover; the push rod is located in the jacket, and in relative rotation and piston type sliding fit with the inner space of the jacket; and a sealing element is arranged between the peripheral surface of the front end of the push rod and the inner wall of the jacket. Most part in contact with the bone cement in the bone cement push-injection pump provided by the utility model is the hard plastic push rod; the gap between the push rod and the inner wall of the jacket is very small so that only little bone cement is in contact with an O-shaped ring for sealing; in this way, the tightness and the return of the push rod may not be affected; besides, a pressure gauge is added to display the pressure of bone cement filling in real time so that overhigh pressure is prevented; and simultaneously, quantized data is provided for clinical operation so that a surgery is more controllable and safer.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of bone cement and injects 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; In the compression vertebral body, directly inject or the implants such as bone cement, artificial bone of reinjecting through balloon expandable earlier through percutaneous; Thereby strengthen the mechanical stability of pathological changes vertebral body; Its reliable and stable, rapid efficacious therapy effect that clinical practice is verified, 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; Said push rod is provided with the plug end and inserts movably in the overcoat, and the opening of said overcoat is provided with the blind nut that an inwall has screw thread, and the outer peripheral face of said push rod is provided with and said blind nut respective threads.
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 heavy-gravity paste; And be prone to be attached on the inwall of overcoat, in injection process, can produce very big pressure the sealing member side direction; Plug is because surface strength is low, and product distortion in injection process easily causes bone cement to flow along deformation place; Thereby product seepage; Plug can stick together with after bone cement contacts in addition, in the push rod rollback, can be easy to cause plug and push rod disengaging because traditional rubber stopper is very soft.
The bone cement injection operation is mainly used in the treatment osteoporosis, and in CC, bone cement is filled the situation that seepage always occurs, can have influence on patient's life safety 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 purpose of this utility model is to overcome the defective of prior art and provides a kind of bone cement to inject pump, and 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 purpose of this utility model is achieved in that
A kind of bone cement of this utility model 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 said overcoat rear end; The rear end of said protecting cover is provided with internal thread hole, and said push rod is threaded with said protecting cover, and said push rod is positioned at said 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 said push rod front end and the said outer casing inner wall.
Above-mentioned a kind of bone cement is injected pump, and wherein, said sealing member is an O type circle.
Above-mentioned a kind of bone cement is injected pump, and wherein, the rear end of said overcoat is provided with the outside horn mouth in big footpath, and bell-mouthed opening is threaded with the front end of said protecting cover.
Above-mentioned a kind of bone cement is injected pump, and wherein, said bone cement is injected pump and comprised that also the pressure gauge connection and of being located at said 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, said pressure gauge is a Pressure gauge.
Above-mentioned a kind of bone cement is injected pump, and wherein, said bone cement is injected the prolongation pipe that pump comprises that also an end is connected with said 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, said prolongation pipe is processed by multilayer materials.
Above-mentioned a kind of bone cement is injected pump; Wherein, Said push rod comprises anterior push rod and rear portion push rod; The rear end of said anterior push rod is fixedly connected with the front end of said rear portion push rod, and the outer peripheral face of said anterior push rod front end is provided with the annular groove that is used to hold said sealing ring, and said rear portion push rod is provided with the external screw thread that matches with said protecting cover internal thread hole.
Above-mentioned a kind of bone cement is injected pump, and wherein, the postmedian of said anterior push rod is provided with a ring for fixing, and this ring for fixing contacts with the front end of said 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 said rear portion, and the internal diameter of said overcoat is 15.8 millimeters.
This utility model bone cement 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 this utility model bone cement; 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. this utility model bone cement 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. this utility model bone cement is injected pump has increased the pressure that Pressure gauge comes real-time demonstration bone cement to fill, and the excessive situation of pressure appears in control, simultaneously also for clinical manipulation provides quantized data, is the controllable safety more of performing the operation.
Description of drawings
Fig. 1 is the structural representation of this utility model;
Fig. 2 is the cutaway view of Fig. 1.
The specific embodiment
To combine accompanying drawing that this utility model is described further below.
See also Fig. 1 and Fig. 2; This utility model bone cement has been shown among the figure has injected 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, sealing part 7 is an O type circle.
Above-mentioned bone cement is injected in the pump, and the rear end of overcoat 1 is provided with the outside horn mouth in big footpath 13, and 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, and the rear end of anterior push rod 31 is fixedly connected with the front end of rear portion push rod 32, and the outer peripheral face of anterior push rod 31 front ends is provided with the annular groove 311 that is used to hold 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 through the internal thread hole 21 of external screw thread and protecting cover 2, and push rod 3 is positioned at overcoat 1, and the inner chamber of push rod 3 and overcoat 1 forms and 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, and the technology that this prolongation pipe 6 adopts multilamellar to extrude is processed, and can not only guarantee big internal diameter; Can also guarantee in the time of 80 degrees centigrade, to bear than higher pressure, be that bone cement is filled ideal more.
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, be connected to the female luer 61 that prolongs pipe 6 on other operating theater instruments; Drive push rod 3 through rotary handle 4 and together rotate, and then the bone cement in the overcoat 1 is pushed out, push rod 32 externally threaded pitch in rear portion are 5 millimeters internal diameter H that cooperate 15.8 millimeters in overcoat; Guaranteeing whenever turns around can push out the bone cement of 1m l from overcoat 1; Thereby take 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 only supplies to explain the usefulness of this utility model; But not to the restriction of this utility model; The technical staff in relevant technologies field under the situation of spirit that does not break away from this utility model and scope, can also make various conversion or modification; Therefore all technical schemes that are equal to also should belong to the category of this utility model, should be limited 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 said overcoat rear end, the rear end of said protecting cover is provided with internal thread hole, and said push rod is threaded with said protecting cover; Said push rod is positioned at said 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 said push rod front end and the said outer casing inner wall.
2. a kind of bone cement as claimed in claim 1 is injected pump, it is characterized in that, said sealing member is an 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 said overcoat is provided with the outside horn mouth in big footpath, and bell-mouthed opening is threaded with the front end of said protecting cover.
4. a kind of bone cement as claimed in claim 1 is injected pump, it is characterized in that, said bone cement is injected pump and comprised that also the pressure gauge connection and of being located at said 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, said pressure gauge is a Pressure gauge.
6. inject pump like each described a kind of bone cement of claim 1 to 5, it is characterized in that, said bone cement is injected the prolongation pipe that pump comprises that also an end is connected with said 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, said prolongation pipe is processed by multilayer materials.
8. a kind of bone cement as claimed in claim 1 is injected pump; It is characterized in that; Said push rod comprises anterior push rod and rear portion push rod; The rear end of said anterior push rod is fixedly connected with the front end of said rear portion push rod, and the outer peripheral face of said anterior push rod front end is provided with the annular groove that is used to hold said sealing ring, and said rear portion push rod is provided with the external screw thread that matches with said 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 said anterior push rod is provided with a ring for fixing, and this ring for fixing contacts with the front end of said 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 said rear portion, and the internal diameter of said overcoat is 15.8 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200496338U CN202515744U (en) | 2012-02-16 | 2012-02-16 | Bone cement push-injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200496338U CN202515744U (en) | 2012-02-16 | 2012-02-16 | Bone cement push-injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202515744U true CN202515744U (en) | 2012-11-07 |
Family
ID=47098720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200496338U Expired - Fee Related CN202515744U (en) | 2012-02-16 | 2012-02-16 | Bone cement push-injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202515744U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103251443A (en) * | 2012-02-16 | 2013-08-21 | 上海康德莱企业发展集团医疗器械有限公司 | Bone cement pushing and injecting pump |
| CN107260283A (en) * | 2017-07-17 | 2017-10-20 | 孙钢 | Stirring perfusion integral type bone cement perfusion equipment |
-
2012
- 2012-02-16 CN CN2012200496338U patent/CN202515744U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103251443A (en) * | 2012-02-16 | 2013-08-21 | 上海康德莱企业发展集团医疗器械有限公司 | Bone cement pushing and injecting pump |
| CN107260283A (en) * | 2017-07-17 | 2017-10-20 | 孙钢 | Stirring perfusion integral type bone cement perfusion equipment |
| CN107260283B (en) * | 2017-07-17 | 2024-02-27 | 孙钢 | Stirring and pouring integrated bone cement pouring equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 201812 Shanghai city Jiading District Jinyuan Road No. 925 Building 2 Patentee after: SHANGHAI KINDLY MEDICAL INSTRUMENTS CO., LTD. Address before: 201803 No. 658, high tide Road, Shanghai, Jiading District Patentee before: Medical Equipment Co., Ltd., Shanghai Kangdelai Enterprise Development Group |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20210216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |