CN203576627U - Equipment used for injecting bone cement - Google Patents
Equipment used for injecting bone cement Download PDFInfo
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- CN203576627U CN203576627U CN201320654362.3U CN201320654362U CN203576627U CN 203576627 U CN203576627 U CN 203576627U CN 201320654362 U CN201320654362 U CN 201320654362U CN 203576627 U CN203576627 U CN 203576627U
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- bone cement
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- 238000002347 injection Methods 0.000 claims abstract description 226
- 239000007924 injection Substances 0.000 claims abstract description 226
- 239000007788 liquid Substances 0.000 claims abstract description 135
- 238000007789 sealing Methods 0.000 claims description 35
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 12
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8802—Equipment for handling bone cement or other fluid fillers
- A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
- A61B17/8816—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by the conduit, e.g. tube, along which fluid flows into the body or by conduit connections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8802—Equipment for handling bone cement or other fluid fillers
- A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8802—Equipment for handling bone cement or other fluid fillers
- A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
- A61B17/8825—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by syringe details
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides equipment used for injecting bone cement. The equipment comprises a bone cement injection device used for accommodating and injecting the bone cement, wherein the bone cement injection device comprises a first syringe used for accommodating the bone cement, a first piston located in the first syringe as well as a hydraulic propelling device used for propelling the first piston; the hydraulic propelling device comprises a second syringe used for accommodating a liquid, a second piston located in the second syringe as well as a connecting component used for transmitting hydraulic pressure in the second syringe to the first piston; and the second syringe is provided with a liquid injection channel used for injecting the liquid into a cavity of the second syringe, and the liquid injection channel is a special channel for injecting the liquid.
Description
Technical field
This utility model relates to medical instruments field, relates in particular to a kind of for injecting the equipment of bone cement.Equipment provided by the utility model can be used for treating cone fracture.
Background technology
Osteoporotic Vertebral Compression Fractures (osteoporotic vertebral compression fracture, OVCF) be old people's common disease, annual have hundreds thousand of routine patients that the compression fracture of vertabral body relevant with aging occurs, and cause persistence lumbago and backache.Although can alleviate its symptom by rest, medicine or traditional operation treatment, most medicines have untoward reaction, and traditional operation treatment wound is larger, fixing not firm in osteoporosis centrum, even fixing in doing, its fixed-segment is very long, be fixed to T4 level, be obviously difficult to accept.In addition, after vertebral body kyphosis deformity spinal column osteotomy orthopaedy because its wound is not greatly generally considered very much yet.At present, for the more or older patient of activity, percutaneous vertebroplasty (percutaneous vertebroplasty, PVP) is a kind of selection preferably.
Percutaneous vertebroplasty refers to that percutaneous increases vertebral body strength and stability by injecting bone cement in pedicle of vertebral arch or the export-oriented vertebral body of pedicle of vertebral arch to reach, prevents from subsiding, and alleviating pain, even partly recovering vertebral height is a kind of Wicresoft of object vertebra surgical technic.It is by Frenchman (Deramond and Galibert), to be invented for 1984, at first for cervical vertebra Aggressive hemangioma, is applied to thereafter osteoporotic Vertebral Compression shape fracture, former of vertebral body or metastatic tumo(u)r and vertebral body Aggressive hemangioma.This operation, by bone cement is injected to vertebral body, has strengthened the structural strength of vertebral body from mechanics.Be mainly used at present the compression fracture of vertabral body of osteoporosis, and former of vertebral body or transitivity invasive tumor, to easing the pain, increase vertebral body intensity, improve whole body related symptoms, have a significant effect, even can improve to a certain extent kyphosis deformity, and it is low to have complication, the good feature of operation long-term effect.
When entering percutaneous vertebroplasty, need be by means of the supervision guiding of two-way X-ray machine, C shape arm, CT or MRI, under local anaesthesia or general anesthesia, through vertebral body front (cervical vertebra), side (thoracic vertebra) and pedicle of vertebral arch (lumbar vertebra), the trocar of certain internal diameter is thrust to vertebral body, injection is mixed with the bone cement of contrast agent, make it along bone trabecula, be distributed to whole vertebral body, to reach the object that strengthens vertebral body intensity.Visible, percutaneous vertebroplasty is to carry out under the environment of radiation, and this health to the doctor who implements this operation is disadvantageous.For the doctor of the protection implement percutaneous vertebroplasty avoids radiation hazradial bundle, prior art has adopted the equipment with extension tube.
Fig. 1 show existing a kind of have extension tube for injecting the equipment of bone cement.As shown in Figure 1, thisly for injecting the equipment of bone cement, comprise the bone cement injection device for accommodating and inject bone cement, described bone cement injection device comprises the first injection tube for accommodating bone cement and is positioned at the first piston of described the first injection tube, described equipment also comprises the hydraulic feed device for advancing described first piston, described hydraulic feed device comprises the second injection tube for accommodating liquid (as normal saline), be arranged in the second piston of described the second injection tube and for by the hydraulic pressure transfer of described the second injection tube to the coupling assembling of described first piston.The one of coupling assembling more typically configures: comprise extension tube, be arranged on the first bonnet on the first injection tube, for connecting the link of described extension tube and the first bonnet.Described coupling assembling is configured such that the hydraulic pressure in the second injection tube can be delivered to described first piston and be advanced described first piston by extension tube, thereby can inject the bone cement in the first injection tube.Because extension tube can configure its length as required, therefore can make the doctor who implements percutaneous vertebroplasty apart from compare Yuan position, radiation areas, promote the second piston so that bone cement injects patient's vertebral body, at this moment doctor can, away from the radiation effect scope of two-way X-ray machine, C shape arm, CT or MRI, therefore avoid the radiation hazradial bundle in operation process.
In this equipment, in order to control injection pressure well, accurately control injection volume, the mode that the second piston in the second injection tube generally adopts rotation to advance.As shown in Figure 1, on the second injection tube of described hydraulic feed device, be also provided with the second bonnet, the mode that described the second bonnet is threaded connection is arranged on described the second injection tube, for advancing the handle of described the second piston to be threaded with described the second bonnet, during user operation, by rotary handle, advance the second piston.Therefore, when using this equipment to enter percutaneous vertebroplasty, the doctor who implements percutaneous vertebroplasty need to carry out following operation:
1) by liquid filling in the second injection tube
As a kind of Wicresoft vertebra surgical technic, percutaneous vertebroplasty requires gnotobasis to protect from infection while implementing, and the normal saline that therefore general use process is sterilized in operation is as the filling liquid in the second injection tube.Concrete operation step is: second bonnet of outwarding winding, by separation with the second injection tube the second bonnet (and coupled handle and second piston); To from the open rearward end of the second injection tube, pour in the second injection tube through the normal saline of sterilization, for example, until reach the amount (liquid level reaches certain groove on the second injection tube) needing; The second bonnet is screwed on the second injection tube to (this operation packs the second piston in the second injection tube into simultaneously).
2) bone cement is filled in the first injection tube
By after the powder body of bone cement and liquid part mix and blend, be filled in the first injection tube; The first bonnet is screwed on the first injection tube to (this operation packs first piston in the first injection tube into simultaneously).Wherein, by the stirring of bone cement, filling process, can use the assembly that comprises mixing drum and back-off cylinder.
3) connect hydraulic feed device and bone cement injection device
By link, extension tube is connected with the first bonnet, thereby hydraulic part and the injection portion of equipment that is used in injection bone cement is connected as a single entity.Like this, completed for this equipment preparation before use.
Use the equipment enforcement percutaneous vertebroplasty for injecting bone cement of prior art described above to there is following defect:
1) by liquid filling in the process in the second injection tube, normal saline through sterilization need be poured in the second injection tube from the open rearward end of the second injection tube, this liquid will be exposed in air within a certain period of time, and the contact area of itself and air is larger, and in air, antibacterial will have larger probability to pollute this liquid thus.This is disadvantageous for the surgical operation that need to output wound.And, in the process of filling liquid, also require second bonnet whiz the second injection tube and screw on the second injection tube, this operation also may make the second bonnet and/or the second injection tube by its contactant, be polluted and then pollute the liquid of wherein filling, thereby to patient, brings the risk of infection.
2) by liquid filling in the process in the second injection tube, user need to complete and comprise second bonnet of outwarding winding, pours liquid into, screws on the actions such as the second bonnet, in order to guarantee the sealing between the second bonnet and the second injection tube, between the second bonnet and injection tube, can adopt the connected mode of multiple tracks screw-threaded engagement, consider that user need to wear surgical glove and operate, these actions will make the longer time of user cost, have caused even the carrying out of impact operation of inconvenience thus to user.
3) liquid filling is not bery met to medical personnel's work habit to second bonnet of outwarding winding in the process in the second injection tube, the action that screws on the second bonnet.Because medical personnel are often required to wear glove, carry out various associative operations, therefore the action of their custom for pushing away, by etc. action, rather than turn, twist etc. action (wear the actions such as glove revolve, twist be more difficult use energetically).
Therefore, those skilled in the art is devoted to develop a kind of new for injecting the equipment of bone cement, to overcome the problems referred to above of prior art.
Utility model content
Because the above-mentioned defect of prior art, technical problem to be solved in the utility model is to provide a kind of integrated for injecting the appliance arrangement of bone cement, with safer, fast and the mode that meets medical personnel's work habit complete the preoperative preparation for this equipment.
For achieving the above object, provided by the utility modelly for injecting the equipment of bone cement, comprise the bone cement injection device for accommodating and inject bone cement, described bone cement injection device comprises the first injection tube for accommodating bone cement and is positioned at the first piston of described the first injection tube, described equipment also comprises the hydraulic feed device for advancing described first piston, described hydraulic feed device comprises the second injection tube for accommodating liquid, be arranged in the second piston of described the second injection tube and for by the hydraulic pressure transfer of described the second injection tube to the coupling assembling of described first piston, wherein, described the second injection tube has the liquid injection channel for inject described liquid to described the second injection tube intracavity, described liquid injection channel is the designated lane for injecting described liquid.
Preferably, described coupling assembling comprises the extension tube that is communicated with described the second injection tube, be installed on the first bonnet on described the first injection tube and for being connected the link of described extension tube and described the first bonnet, on described the first bonnet, be provided with the piston installing component for described first piston is installed, described piston installing component has center through hole.More preferably, described first piston is installed on described piston installing component by detachable snap-in structure, for example, the outer wall of the far-end of described piston installing component can arrange prominent ring, the proximal end face of described first piston can be set to have cylindrical pit, the annular groove matching with this prominent ring can be set on the sidewall of this pit, and described piston installing component and described first piston all can be made of plastics.On the outer wall of described piston annular element, also can be provided for the sealing O shape circle of the sealing between described piston piston element and described the first injection tube.Link described here is preferably snap joint.The mode that described the first bonnet can be threaded connection is installed on described the first injection tube.
Preferably, described hydraulic feed device also comprises the handle for advancing described the second piston, the near-end of described the second injection tube is also provided with the second bonnet, and described handle comprises grip part and bar portion, and described bar portion is installed on described the second bonnet by the mode of screw thread.More preferably, the mode that described the second bonnet is threaded connection is installed on described the second injection tube.The inwall of the second injection tube can also comprise that internal diameter is greater than the non-tight part of the external diameter of described the second piston.
Preferably, in described the second piston, be also provided with pop off valve.For example: described the second piston can have for the inner chamber of described the second injection tube is communicated to extraneous pressure relief channels, and for sealing and open the pressure seal parts of described pressure relief channels; The second position that described pressure seal parts are configured to have the primary importance of the described pressure relief channels of sealing and open described pressure relief channels, described pressure seal parts are configured to by the hydraulic action in described the second injection tube in the second position.More preferably, in described the second piston, be also provided with stage clip, described pressure seal parts are configured to by the elastic acting force of described stage clip in primary importance.In a kind of concrete embodiment, the inwall of described pressure relief channels is also provided with sealing O shape circle, described primary importance is the position that described pressure seal parts are arranged in described sealing O shape circle, and the described second position is the position that described pressure seal parts depart from described sealing O shape circle.
Preferably, described liquid injection channel is arranged on the sidewall of described the second injection tube.
Preferably, the outer end of described liquid injection channel has and the joint being connected for the syringe that injects described liquid.More preferably, described joint is female Luer.
Preferably, wherein said liquid injection channel is one-way conduction.
Preferably, the outer end of described liquid injection channel is communicated with check valve, for example, by female Luer, be communicated with check valve.In addition, the outer end of described check valve also can have and the joint being connected for the syringe that injects described liquid, for example female Luer.More preferably, described check valve has the liquid passage of flowing through, and is communicated with the liquid communication space that forms sealing with described liquid injection channel, and the flow through inwall of passage of described liquid has step, and described liquid is flowed through in passage and is provided with flexure strip; Described flexure strip comprises the fixed part for the deflector that is positioned at periphery against described step and in the middle of being positioned at; Described liquid is flowed through on the inwall of passage and is also provided with the support component for the position of fixing described flexure strip, and described support component is fixed described flexure strip by described fixed part.The described deflector of wherein said flexure strip can be by elastomeric material, as silica gel is made.In a specific embodiment, thereby the thickness of described fixed part is greater than described deflector to be made to form another step between described fixed part and described deflector, described support component consists of multiple strips that extended out by inwall or lamellar projection, and multiple projections clamp the sidewall of the fixed part of described flexure strip by the elasticity (material of projection and inwall can be plastics) of self.
At this utility model, on the basis of the existing equipment with extension tube, improve, on the second injection tube, arrange and be independently specifically designed to the passage of the second injection tube intracavity filling liquid, overcome well the contaminated problem of filling liquid that may introduce in existing equipment filling liquid process, simultaneously, can effectively reduce the time of required filling liquid, increase work efficiency.Specifically, due to equipment of the present utility model at filling liquid in the process of the second injection tube, can utilize the other syringe that liquid is housed to be connected with the liquid injection channel of equipment of the present utility model, liquid enters by liquid injection channel that the whole process of the second injection tube intracavity can carry out in the space of a sealing, this has reduced liquid effectively by the probability of surrounding air and the pollution of other contactants, has improved thus safety.In addition, because liquid directly injects the second injection tube intracavity by liquid injection channel, therefore in using, do not need to outward winding yet hydraulic pressure bonnet, pour liquid into, screw on the actions such as hydraulic pressure bonnet, and pushing syringe liquid is wherein injected to the second injection tube is an operation that can complete soon.And, owing to can be in advance filling as the amount of required liquid syringe is inner, like this liquid filling not should be noted that to whether the liquid in ram pot arrives the amount needing during to ram pot.Therefore, than prior art for advancing and inject the device of bone cement, the time that can effectively reduce required filling liquid for injecting the equipment of bone cement of the present utility model, improved work efficiency.Finally, due in the process of the second injection tube filling liquid that uses syringe to equipment of the present utility model, the action that operator need to complete is mainly and pushes away, by, these are all the actions that meets medical personnel's work habit, therefore, the design of equipment of the present utility model more meets medical personnel's work habit, is convenient to their operation, improves their work efficiency.Therefore visible, of the present utility model for inject the equipment of bone cement realized with safer, fast and the mode that meets medical personnel's work habit complete equipment for the injecting bone cement object in preoperative preparation.
Below with reference to accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is described further, to understand fully the purpose of this utility model, feature and effect.
Accompanying drawing explanation
Fig. 1 be prior art have extension tube for injecting the structural representation of equipment of bone cement.
Fig. 2 be in a kind of preferred specific embodiment of the present utility model for injecting the structural representation of equipment of bone cement.
Fig. 3 be shown in Fig. 2 for injecting the outside drawing of the second piston of equipment of bone cement.
Fig. 4 is the internal structure schematic diagram of the second piston shown in Fig. 3.
Fig. 5 be shown in Fig. 2 for injecting the outside drawing of check valve of equipment of bone cement.
Fig. 6 is the profile of the check valve shown in Fig. 5.
Fig. 7 be shown in Fig. 2 for injecting the schematic diagram of occupation mode of equipment of bone cement.
The specific embodiment
Annotation: one end of the grip portions of the user near this equipment that the meaning of " near-end " described in present patent application refers to, the meaning of " far-end " refers to the one end away from the grip portions of the user of this equipment.
Fig. 2-Fig. 6 shows provided by the utility model for injecting the preferred specific embodiment of one of equipment of bone cement.
As shown in Figure 2, in this specific embodiment, for injecting the equipment of bone cement, first comprise the bone cement injection device 100 for accommodating and inject bone cement.Bone cement injection device 100 comprises the first injection tube 110 for accommodating bone cement, is arranged in the first piston 120 of the first injection tube 110.The first injection tube 110 used herein and first piston 120 can be existing syringe or the piston that is applicable to the various syringes of injecting bone cement in prior art.The volume of the first injection tube 110 is preferably 5-20ml, more preferably 15ml left and right.Bone cement injection device 100 can be disposable, also can Reusability.
Bone cement described here refers to the bone cement or the bone filler that powder and the two components of liquor, consist of, for being adhesively fixed of artificial joint, the filling that bone is damaged, the fixing and medicine controlled release carrier of fracture etc., as acrylic cement (acrylic cement) or polymethyl methacrylate (polymethyl methacrylic, PMMA).
Bone cement injection device 100 can also comprise the puncture needle that is arranged on the first injection tube 110 far-ends.The mounting means of puncture needle on the first injection tube 110 can be dismountable, can be also non-removable.Bone cement injection device 100 also can not comprise puncture needle when produce and market, and user is installed existing various puncture needle in use.In this case, the far-end of the first injection tube 110 is configured to have the joint that is applicable to installing puncture needle as required, as female Luer.Female Luer preferably meets 6% (Rule) cone locking joint (female Luer of the following stated also can preferably meet 6% (Rule) cone locking joint of CNS or relevant international standard) of CNS or relevant international standard.
As shown in Figure 2, in this specific embodiment, for injecting the equipment of bone cement, also comprise the hydraulic feed device 200 for advancing first piston 120, hydraulic feed device 200 comprises the second injection tube 210 for accommodating liquid (as normal saline), be arranged in the second piston 220 of the second injection tube 210 and for the coupling assembling 300 to first piston 120 by the hydraulic pressure transfer of the second injection tube 210.
Coupling assembling 300 comprises extension tube 310, the first bonnet 320, for connecting the snap joint 330 of extension tube 310 and the first bonnet 320.The Main Function of coupling assembling 300 be by the hydraulic pressure transfer in the second injection tube 210 to first piston 120, thereby advance first piston 120 inject bone cement.The extension tube 310 of coupling assembling 300 can configure corresponding length as required, makes user away from radiation areas.Therefore, the problem of coupling assembling 300 primary needs solution is if guarantee sealing.
First being connected of extension tube 310 and the second injection tube 210 described.In this specific embodiment, the far-end of the second injection tube 210 has the through hole for extension tube 310 is installed, the external diameter of the aperture of this through hole and extension tube 310 matches, and the near-end of extension tube 310 is installed on the second injection tube 210 by this through hole, and is communicated with the inner chamber of the second ram pot 210.In order to guarantee sealing and enough intensity, can with glue, carry out bonding in the junction of extension tube 310 and the second ram pot 210.The junction of extension tube 310 and the second injection tube 210 can arrange protective casing, to prevent that extension tube 310 from bending in junction.
Next description first bonnet 320 is connected with the first injection tube 110.The mode that the first bonnet 320 is threaded connection is arranged on the first injection tube 110.On the first bonnet 320, be also provided with the piston installing component 340 for first piston 120 is installed.Piston link 340 is fixedly installed on the first bonnet 320, and piston installing component 340 has center through hole, for flowing and the transmission of hydraulic pressure of liquid.The far-end of piston installing component 340 is connected with first piston 120 by detachable snap-in structure, for example, the outer wall of the far-end of piston installing component 340 can arrange prominent ring, the proximal end face of first piston 120 can be set to have cylindrical pit, the annular groove matching with this prominent ring can be set on the sidewall of pit, piston installing component 340 all can be made of plastics with first piston 120, and like this, first piston 120 just can be connected with piston installing component 340 easily by this snap-in structure; Meanwhile, when first piston 120 is subject to used time of doing of enough hydraulic pressure, first piston 120 again can be separation with piston installing component 340, thereby advance the injection of bone cement.The object of design is filling and the injection in order to facilitate bone cement like this: during to the interior filling bone cement of the first injection tube 110, need to be by first bonnet 320 whiz the first injection tubes 110, and first piston 120 need to be departed from from the first injection tube 110; During to patient's cone injection bone cement, need first piston 120 and piston installing component 340 to depart from.In this kind of design, for the object better sealing, on the outer wall of piston installing component 340, can also be provided with the sealing O shape circle for the sealing between piston installing component 340 and the first injection tube 110.
Connection between extension tube 310 and the first bonnet 320 is finally described.Extension tube 310 can be connected by snap joint 330 with the first bonnet 320.Snap joint 330 can be that of the prior art can realization fast connects with Fen Li, and guarantees the various terminal of sealing, and its structure no longer describes in detail.The near-end of snap joint 330 has the through hole for extension tube 310 is installed, and the external diameter of the aperture of this through hole and extension tube 310 matches, and the far-end of extension tube 310 is installed in snap joint 330 by this through hole, and is communicated with the inner chamber of snap joint 330.In order to guarantee sealing and enough intensity, can with glue, carry out bonding in the junction of extension tube 310 and snap joint 330.Extension tube 310 can arrange protective casing with the junction of snap joint 330, to prevent that extension tube 310 from bending in junction.The mode that the far-end of snap joint 330 can be threaded connection is installed to the near-end of the center through hole of piston installing component 340.For the object better sealing, on the outer wall of the far-end of snap joint 330, can also be provided with the sealing O shape circle for the sealing between snap joint 330 and piston installing component 340.
Extension tube in the application is one section of body, can adopt nylon (PA) to make.Through groping, applicant's discovery, extension tube size is set to long 800-1200mm, internal diameter 0.3-0.4, external diameter 1.4-1.8mm is proper, both can meet the requirement of the intensity of hydraulic pressure transfer, again person's easy to use operation.More preferably, extension tube size is set to long 1000mm left and right, internal diameter 0.36mm left and right, external diameter 1.6mm left and right.
In hydraulic feed device 200, a kind of mode of preferred propelling the second piston 220 is the modes that adopt rotation to advance.As shown in Figure 2, hydraulic feed device 200 also comprises the second bonnet 230 and for advancing the handle 240 of the second piston 220.Handle 240 comprises grip part 241 and bar portion 242, and the mode that bar portion 242 is threaded connection is arranged on the second bonnet 230.User operating grip 240 is rotated and can makes bar portion 241 move forward, thereby act on the second piston 220, pushes ahead.Here, the far-end of bar portion 242 can be connected with the second piston 220, and second piston 220 of also can getting along well connects.If the far-end of bar portion 242 is connected with the second piston 220, bar portion 242 not only can advance the second piston 220 to push ahead, and also can drive the second piston 220 to move backward.If the far-end of bar portion 242 is not connected with the second piston 220, like this, bar portion 242 can only advance the second piston 220 to push ahead, but can not drive the second piston 220 to move backward; The benefit arranging is like this: for disposable use equipment, can judge easily whether this equipment was used, thereby avoid reusing the risk of bringing; And, because not allowing the second piston 220, moves backward this set, can avoid the risk of for example, bringing due to maloperation (rotatable handle anisotropy).
Due in equipment provided by the utility model, liquid injects in the second injection tube 210 by liquid injection channel, do not need by the residing opening filling liquid of the second bonnet 230, therefore, the second bonnet 230 can be set to be fixedly installed in the second injection tube 210, is even processed into one with the second injection tube 210, that is to say, the second bonnet 230 can not take off from the second injection tube 210, and this has also further been avoided the contaminated probability of liquid.Certainly, for the convenience of processing, the second bonnet 230 also can carry out detachable being connected with the second injection tube 210, and for example, the mode being threaded connection is arranged on the second injection tube 210.When the mode that the second bonnet 230 is threaded connection is arranged on the second injection tube 210, a kind of preferred scheme is, on the outer wall of the second bonnet 230, external screw thread is set, on the inwall of the second injection tube 210, female thread is set, the second bonnet 230 is installed on the inside of the second injection tube 210.In addition, the inwall of the second injection tube 210, except the hermetic unit that comprises internal diameter and closely mate with the second piston 220 external diameters, can also comprise that internal diameter is greater than the non-tight part of the second piston 220 external diameters.Here the external diameter of said the second piston 220 refers to the external diameter at the maximum outside diameter place of the second piston 220, and for example, when the second piston 220 is sealed O shape and enclosed to realize sealing function by overcoat, the external diameter of the second piston 220 refers to the external diameter of sealing O shape circle.When having screw thread on the inwall of the second injection tube 210, the threaded part of tool can be used as non-tight portion.The effect arranging is like this to exclude in the second injection tube most of air of 210 when to the second injection tube 210 interior filling liquid: before liquid is injected in the second injection tube 210, the second piston 220 can be placed in to non-tight portion, like this, when liquid injects the second injection tube 210 when interior, the most of air in the second injection tube 210 can discharge by the space between the second piston 220 and non-tight portion.For air-out as much as possible object, non-tight portion can be positioned adjacent to said liquid injection channel below.
In this specific embodiment, the second piston 220, except having the effect of piston, guarantees that outside the sealing and mobility between this piston and the second injection tube 210, the second piston 220 also has the effect of pop off valve.Due to carrying out in the process of PVP operation, the bone cement that is arranged in the first injection tube 110 is the curing possibility because of overlong time likely, and in this case, bone cement has been not suitable for being injected into patient's cone; And, if the bone cement in the first injection tube 110 occurs to solidify, can cause the hydraulic pressure in the first injection tube interior 210 too high, thereby likely make the risk of whole device generation seepage or even explosion.For fear of the generation of this situation, can in hydraulic feed device 200, pop off valve be set, when the hydraulic pressure in the second injection tube 210 exceedes the threshold value of certain setting, pop off valve is opened, discharge the pressure in the second injection tube 210, thereby prevent that the bone cement having cured is injected into patient's cone, also prevent hydraulic feed device generation seepage or explosion simultaneously.Second piston 220 is effects of playing pop off valve by following configuration: as shown in Figure 3 and Figure 4, the second piston 220 has for the second injection tube 210 inner chambers are communicated to extraneous pressure relief channels, and for sealing and open the pressure seal parts 221 of pressure relief channels; The entrance 222 of pressure relief channels is towards the inner chamber of the second injection tube 210, and the outlet 223 of pressure relief channels is positioned on the outer wall of the second piston 220; Pressure seal parts have primary importance and the second position, when pressure seal parts are positioned at primary importance, between pressure seal parts 221 and the inwall of pressure relief channels, there is sealing O shape circle 224, by the effect of sealing O shape circle 224, pressure relief channels is closed; When pressure seal parts 221 are positioned at the second position, pressure seal parts 221 depart from sealing O shape circle 224, and pressure relief channels is opened; In the second piston 220, be also provided with stage clip 225, by the elastic acting force of stage clip 225, make pressure seal parts 221 in primary importance; When pressure seal parts 221 are subject to the enough large hydraulic pressure that comes from the second injection tube 210 inner chambers, be that hydraulic pressure is while being greater than the elastic acting force of stage clip 225 to the active force of pressure seal parts 221,221 of pressure seal parts can move to the second position, thereby open pressure relief channels.
In this specific embodiment, the second injection tube 210 of hydraulic feed device 200 has liquid injection channel 211.
That the second injection tube 210 for the equipment of injecting bone cement in this specific embodiment also has liquid injection channel 211 with the equipment difference for injecting bone cement of prior art.Said liquid injection channel 211 is the designated lanes for filling liquid herein, that is to say, liquid injection channel 211 is positioned at outside the mobile route of the second piston 220.Comparatively speaking, in the prior art, liquid injects the second injection tube by the open rearward end of the second injection tube, like this, passage for filling liquid of the prior art does not just belong to said special way herein, because the passage for filling liquid of the prior art is also for the movement of piston; And the passage for filling liquid of the prior art is positioned among the mobile route of piston.
As shown in Figure 2, in this specific embodiment, liquid injection channel 211 is arranged on the sidewall of the second injection tube 210, and with the sidewall of the second injection tube (being less than 90 degree) at an angle.As the variation of this specific embodiment, liquid injection channel 211 also can be arranged on the bottom (or far-end) of the second injection tube 210, or certain position of close bottom opening.In this specific embodiment, liquid injection channel 211 cross sections are circular.As the variation of this specific embodiment, the cross section of liquid injection channel 211 can be also oval, square or other shapes.Form the pipe fitting of liquid injection channel 211 can be with the second injection tube 210 one-body molded or fit together, for last situation, the pipe fitting that forms liquid injection channel 211 is formed by identical material with the second injection tube 210; For a rear situation, the pipe fitting that forms liquid injection channel 211 can be formed by identical material with the second injection tube 210, also can be formed by different materials; But need to guarantee the sealing between liquid injection channel 211 and the second injection tube 210.
Referring to Fig. 5 and Fig. 6, check valve 400 has the liquid passage 401 of flowing through, and when check valve 400 is connected with the outer end of liquid injection channel 211, the liquid passage 401 of flowing through is communicated with the liquid communication space that forms sealing with liquid injection channel 211.Be used to form the flow through inwall of check valve 400 of passage 401 of liquid and have step 402, liquid is flowed through in passage 401 and is had flexure strip 403.Flexure strip 403 comprises the fixed part 405 for the deflector that is positioned at periphery 404 against step 402 and in the middle of being positioned at, thereby the thickness of fixed part 405 is greater than deflector 404, makes to form another step between fixed part 405 and deflector 404.Be used to form the flow through inwall of check valve 400 of passage 401 of liquid and also there is the support component 406 for the position of fixing flexure strip 403, support component 406 consists of multiple strips that extended out by inwall or lamellar projection, multiple projections clamp the sidewall of the fixed part of flexure strip 403 405 by the elasticity (material of projection and inwall is plastics) of self, thereby flexure strip 403 is fixed between step 402 and support component 406; Multiple projections also can be against the deflector of flexure strip 403 404, thereby flexure strip 403 is fixed between step 402 and support component 406.The number of projection is preferably 6-10, more preferably 8.Flexure strip 403 is made by elastomeric material (as silica gel), and therefore, deflector 404 is subject to can producing deflection after the effect of hydraulic pressure.But deflector 404 is due to against step 402, makes the deflector 404 can not the enterprising horizontal deflection in the direction towards step 402, and can only be in the enterprising horizontal deflection of the direction that deviates from step 402, thereby realize the function of liquid one-way flow.
In addition, the other end 408 of check valve 400 also can have female female Luer, for connecting syringe.As shown in Figure 7, one end of the injection tube of syringe 500 has public female Luer, can by female Luer, the injection tube of syringe 500 is connected with check valve 400 easily, then liquid is filled and is entered the second injection tube 210 in the mode of injection.It should be noted that, as the distortion of this specific embodiment, also can adopt other fit system to complete being connected of being connected of check valve 400 and liquid injection channel 211 and check valve 400 and syringe 500.
Provided by the utility modelly for the equipment of injecting bone cement, when manufacturing and sell, can comprise syringe 500, also can not comprise syringe 500.When this equipment comprises syringe 500, because syringe 500 is connected with check valve 400 by female Luer, therefore can easily syringe 500 and check valve 400 be carried out separationly, then will after syringe 500 imbititions (as the normal saline after sterilizing), be connected with check valve 400 again.When this equipment does not comprise syringe 500, female female Luer of the outer end of check valve 400 can be arranged to the specification matching with the specification of existing conventional syringe, as meets 6% (Rule) cone locking joint of CNS or relevant international standard.And all right configuration protection lid in outer end of check valve 400, to protect better the intracavity of the second injection tube 210 not contaminated.During use, after device 500 imbititions to be injected complete, take off over cap, syringe 500 is connected with check valve 400, then carry out subsequent operation.
Particularly, use the preoperative preparation of equipment enforcement percutaneous vertebral plasty for injecting bone cement in this specific embodiment to comprise the following steps:
Step 1, provide the syringe that normal saline is housed.
Take the normal saline of requirement (volume), to this normal saline sterilization treatment that carries out disinfection, will be filled in the injection tube of syringe 500 through the normal saline of disinfecting.Wherein, syringe 500 is through sterilization, in operation by the propelling piston of the syringe 500 of pulling back, injection tube by the normal saline through sterilization from the exit inhalation syringe 500 of syringe 500, then slowly advance the propelling piston of syringe 500, the residual air (bubble) in the injection tube of syringe 500 is left from the outlet of syringe 500.
Step 2, syringe 500 is connected with equipment.
In this specific embodiment for injecting the integration apparatus that the equipment of bone cement has been assembling, be that check valve 400 is connected (can closely connect by the cooperation of female Luer as mentioned above) between the two with the liquid injection channel 211 of the second injection tube 210.The injection tube of syringe 500 is connected to the outer end of check valve 400 by female Luer.
Step 3, filling liquid are to the second injection tube 210.
Advance the propelling piston of syringe 500, the liquid in the injection tube of syringe 500 is released, liquid enters the second injection tube 210 by check valve 400, liquid injection channel 211.Due to the liquid through having filled the amount needing in the syringe 500 of step 1, therefore at this, the liquid in syringe 500 need to be released completely in the second injection tube 210, just can realize the amount of liquid needing in the interior filling of the second injection tube 210.In this operation, the second piston 220 can be positioned at the non-tight portion of the second injection tube 210, and like this, when to the second injection tube 210 interior injecting fluid, the air in the second injection tube 210 can be discharged by the space between the second piston 220 and the second injection tube 210.
Complete after liquid filling, from this equipment, take off syringe 500.
Step 4, filling bone cement are to the first injection tube 110.
By after the powder body of bone cement and liquid part mix and blend, be filled into the first injection tube 110, the first bonnet 340 is tightened onto to the first injection tube 110.Wherein, by the stirring of bone cement, filling process, can use the fill assembly that comprises mixing drum and back-off cylinder.Because stirring, the filling of bone cement are prior aries, at this, do not describe in detail.
Step 5, connection hydraulic part and injection portion.
Similar to prior art, in this step, by quick street corner 330, hydraulic part and injection portion for the equipment of injecting bone cement in this specific embodiment are connected as a single entity.Like this, completed of the present utility model for the device of injecting bone cement preparation before use.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all those skilled in the art comply with design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should be in by the determined protection domain of claims.
Claims (19)
1. one kind for injecting the equipment of bone cement, described equipment comprises the bone cement injection device for accommodating and inject bone cement, described bone cement injection device comprises the first injection tube for accommodating bone cement and is positioned at the first piston of described the first injection tube, described equipment also comprises the hydraulic feed device for advancing described first piston, described hydraulic feed device comprises the second injection tube for accommodating liquid, be arranged in the second piston of described the second injection tube and for by the hydraulic pressure transfer of described the second injection tube to the coupling assembling of described first piston, it is characterized in that, described the second injection tube has the liquid injection channel for inject described liquid to described the second injection tube intracavity, described liquid injection channel is the designated lane for injecting described liquid.
2. equipment as claimed in claim 1, wherein said hydraulic feed device also comprises the handle for advancing described the second piston, the near-end of described the second injection tube is also provided with the second bonnet, described handle comprises grip part and bar portion, and the mode that described bar portion is threaded connection is installed on described the second bonnet.
3. equipment as claimed in claim 2, the mode that wherein said the second bonnet is threaded connection is installed on described the second injection tube.
4. equipment as claimed in claim 1, is also provided with pop off valve in wherein said the second piston.
5. equipment as claimed in claim 1, wherein said the second piston has for the inner chamber of described the second injection tube is communicated to extraneous pressure relief channels, and for sealing and open the pressure seal parts of described pressure relief channels; The second position that described pressure seal parts are configured to have the primary importance of the described pressure relief channels of sealing and open described pressure relief channels, described pressure seal parts are configured to by the hydraulic action in described the second injection tube in the described second position.
6. equipment as claimed in claim 5, is also provided with stage clip in wherein said the second piston, and described pressure seal parts are configured to by the elastic acting force of described stage clip in described primary importance.
7. equipment as claimed in claim 5, the inwall of wherein said pressure relief channels is also provided with sealing O shape circle, described primary importance is the position that described pressure seal parts are arranged in described sealing O shape circle, and the described second position is the position that described pressure seal parts depart from described sealing O shape circle.
8. equipment as claimed in claim 1, wherein said liquid injection channel is arranged on the sidewall of described the second injection tube.
9. equipment as claimed in claim 1, the outer end of wherein said liquid injection channel has and the joint being connected for the syringe that injects described liquid.
10. equipment as claimed in claim 9, wherein said joint is female Luer.
11. equipment as claimed in claim 1, wherein said liquid injection channel is one-way conduction.
12. equipment as claimed in claim 1, the outer end of wherein said liquid injection channel is communicated with check valve.
13. equipment as claimed in claim 12, the outer end of wherein said check valve has and the joint being connected for the syringe that injects described liquid.
14. equipment as claimed in claim 13, wherein said joint is female Luer.
15. equipment as claimed in claim 12, wherein said check valve has the liquid passage of flowing through, be communicated with the liquid communication space that forms sealing with described liquid injection channel, the flow through inwall of passage of described liquid has step, and described liquid is flowed through in passage and is provided with flexure strip; Described flexure strip comprises the fixed part for the deflector that is positioned at periphery against described step and in the middle of being positioned at; Described liquid is flowed through on the inwall of passage and is also provided with the support component for the position of fixing described flexure strip, and described support component is fixed described flexure strip by described fixed part.
16. equipment as claimed in claim 15, the described deflector of wherein said flexure strip is made by elastomeric material.
17. equipment as claimed in claim 16, wherein said elastomeric material is that silica gel is made.
18. equipment as claimed in claim 15, thereby the thickness of wherein said fixed part is greater than described deflector to be made to form another step between described fixed part and described deflector, described support component consists of multiple strips that extended out by inwall or lamellar projection, and multiple projections clamp the sidewall of the fixed part of described flexure strip by the elasticity of self.
19. equipment as claimed in claim 1, wherein said liquid is normal saline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320654362.3U CN203576627U (en) | 2013-01-09 | 2013-10-22 | Equipment used for injecting bone cement |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320011511 | 2013-01-09 | ||
| CN201320011511.4 | 2013-01-09 | ||
| CN201320654362.3U CN203576627U (en) | 2013-01-09 | 2013-10-22 | Equipment used for injecting bone cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203576627U true CN203576627U (en) | 2014-05-07 |
Family
ID=50574613
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320654362.3U Expired - Lifetime CN203576627U (en) | 2013-01-09 | 2013-10-22 | Equipment used for injecting bone cement |
| CN201310501173.7A Pending CN103908332A (en) | 2013-01-09 | 2013-10-22 | Equipment for injecting bone cement |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310501173.7A Pending CN103908332A (en) | 2013-01-09 | 2013-10-22 | Equipment for injecting bone cement |
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| Country | Link |
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| CN (2) | CN203576627U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103908332A (en) * | 2013-01-09 | 2014-07-09 | 上海凯利泰医疗科技股份有限公司 | Equipment for injecting bone cement |
| CN104586497A (en) * | 2015-02-09 | 2015-05-06 | 北京闪星世纪医疗科技有限公司 | Bone cement injecting tool |
| CN105055012A (en) * | 2015-08-13 | 2015-11-18 | 广州爱锘德医疗器械有限公司 | Bone cement stirring injector |
| WO2015195471A1 (en) * | 2014-06-16 | 2015-12-23 | Kyphon SÀRL | High pressure remote delivery system for cement and methods of use |
| CN107349004A (en) * | 2017-08-11 | 2017-11-17 | 上海建世生物科技有限公司 | A kind of bone cement auxiliary injection unit |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106901823B (en) * | 2017-01-22 | 2023-07-25 | 常州百隆微创医疗器械科技有限公司 | Quick pressure release push injection type bone cement filler |
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| US3837381A (en) * | 1972-12-26 | 1974-09-24 | Prod Adex Sa | Shuttoff valve device |
| ES2164548B1 (en) * | 1999-08-05 | 2003-03-01 | Probitas Pharma Sa | DEVICE FOR DOSAGE OF FRAGUABLE MASS FOR VERTEBROPLASTIA AND OTHER SIMILAR OSEOS TREATMENTS. |
| CN2560361Y (en) * | 2002-07-25 | 2003-07-16 | 刘光奎 | Elliptical self-ruined disposable syringe |
| CN101601886A (en) * | 2004-05-11 | 2009-12-16 | 医疗器械创新有限公司 | The check valve that utilizes fluid pressure to open and close |
| DE102004053214A1 (en) * | 2004-06-17 | 2006-01-05 | Filtertek, Inc., Hebron | Non-return valve in particular for use in surgical device, comprising membrane permanently attached to one of two housings |
| US7291134B2 (en) * | 2004-10-25 | 2007-11-06 | P. Rowan Smith, Jr. | Medical connector |
| CN201088752Y (en) * | 2007-09-18 | 2008-07-23 | 刘芬 | Disposable syringe |
| JP4949300B2 (en) * | 2008-03-24 | 2012-06-06 | テルモ株式会社 | Bone cement injector |
| AU2009270307B2 (en) * | 2008-07-15 | 2013-03-21 | Lorne Beckman | Bone cement injection device |
| CN201624757U (en) * | 2009-07-17 | 2010-11-10 | 徐世隆 | Vertebral body kyphoplasty surgical instrument |
| CN102178990B (en) * | 2010-01-08 | 2013-10-09 | 江苏丞宇米特医疗科技有限公司 | Needleless injector |
| US10188436B2 (en) * | 2010-11-09 | 2019-01-29 | Loma Vista Medical, Inc. | Inflatable medical devices |
| KR101894705B1 (en) * | 2011-01-06 | 2018-09-05 | 신세스 게엠바하 | Hydraulic injection system for bone cement |
| CN202490326U (en) * | 2012-03-28 | 2012-10-17 | 成都威力生生物科技有限公司 | Medical check valve |
| CN203576627U (en) * | 2013-01-09 | 2014-05-07 | 上海凯利泰医疗科技股份有限公司 | Equipment used for injecting bone cement |
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2013
- 2013-10-22 CN CN201320654362.3U patent/CN203576627U/en not_active Expired - Lifetime
- 2013-10-22 CN CN201310501173.7A patent/CN103908332A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103908332A (en) * | 2013-01-09 | 2014-07-09 | 上海凯利泰医疗科技股份有限公司 | Equipment for injecting bone cement |
| WO2015195471A1 (en) * | 2014-06-16 | 2015-12-23 | Kyphon SÀRL | High pressure remote delivery system for cement and methods of use |
| AU2015277489B2 (en) * | 2014-06-16 | 2018-05-24 | Medtronic Holding Company Sàrl | High pressure remote delivery system for cement and methods of use |
| US10098682B2 (en) | 2014-06-16 | 2018-10-16 | Medtronic Holding Company Sárl | High pressure remote delivery system for cement and methods of use |
| CN104586497A (en) * | 2015-02-09 | 2015-05-06 | 北京闪星世纪医疗科技有限公司 | Bone cement injecting tool |
| CN104586497B (en) * | 2015-02-09 | 2016-11-16 | 北京闪星世纪医疗科技有限公司 | Bone cement implantation tool |
| CN105055012A (en) * | 2015-08-13 | 2015-11-18 | 广州爱锘德医疗器械有限公司 | Bone cement stirring injector |
| CN105055012B (en) * | 2015-08-13 | 2018-09-14 | 广州爱锘德医疗器械有限公司 | Bone cement stirring syringe |
| CN107349004A (en) * | 2017-08-11 | 2017-11-17 | 上海建世生物科技有限公司 | A kind of bone cement auxiliary injection unit |
| CN107349004B (en) * | 2017-08-11 | 2023-08-29 | 宁波华科润生物科技有限公司 | Bone cement auxiliary injection device |
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|---|---|
| CN103908332A (en) | 2014-07-09 |
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |
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| CX01 | Expiry of patent term |