CN203342194U - Medical infusion adapter which is provided with check valve and connected with extracorporal indwelling catheter - Google Patents
Medical infusion adapter which is provided with check valve and connected with extracorporal indwelling catheter Download PDFInfo
- Publication number
- CN203342194U CN203342194U CN 201320262939 CN201320262939U CN203342194U CN 203342194 U CN203342194 U CN 203342194U CN 201320262939 CN201320262939 CN 201320262939 CN 201320262939 U CN201320262939 U CN 201320262939U CN 203342194 U CN203342194 U CN 203342194U
- Authority
- CN
- China
- Prior art keywords
- fittings body
- inner chamber
- joint
- stop valve
- joint pedestal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a device for introducing media into the body, in particular to a medical infusion adapter which is provided with a check valve and connected with an extracorporal indwelling catheter. The medical infusion adapter which is provided with the check valve and connected with the extracorporal indwelling catheter comprises a connection seat and an adapter body. The front end of the connection seat is connected with an extension pipe of the indwelling catheter. The rear end of the adapter body is connected with an infusion device. The medical infusion adapter is characterized by further comprising an adapter base. The adapter base is constructed with the connection base in an integral or split mode, but the adapter base is fixedly connected with the connection seat. The front segment of the adapter body is sleeved with an inner cavity of the adapter base in a pushing or receding mode. The medical infusion adapter has the advantages that the manner of preventing and eliminating the negative pressure is easy, efficient and convenient to operate. Due to intervention of a check valve, the negative pressure is eliminated and at the same time, the infusion channel is cut off. The device for introducing the media into the body is more hygienic and safer and structurally ensures that the adapter body must be receded when infusion is carried out again, so that the after the infusion is finished, the adapter body has pushing space to eliminate the negative pressure. As the adapter body pushes, cut-off is gradually performed and thus, the check valve also has the function of a flow regulating valve.
Description
Technical field
This utility model relates to a kind ofly introduces the device in body by medium, particularly a kind of medical infusion joint with stop valve of plugging into non small cellCatheter.
Background technology
In clinical treatment, when needs of patients is repeatedly infused, usually can use non small cellCatheter, the mode of connecing of refuting of the outer inlying catheter of human body and transfusion device is divided into and has pin and needleless to refute to connect.Of the prior art a kind ofly have pin to refute the mode of connecing as shown in Figure 1, and the medical infusion joint is comprised of Connection Block 1 and the fittings body 2 affixed with it, and this fittings body 2 that has pin to refute to connect is called again calparine cap usually.The transfusion device needle tubing inserts from the seal rubber plug at fittings body 2 tops.Transfusion ends when extracting the transfusion device needle tubing, thereby the former space occupied of needle tubing approaches vacuum and produce multiple the pressure in inlying catheter, blood can flow backwards in inlying catheter from blood vessel, refluence blood causes blood coagulation to stop up inlying catheter, can't again infuse, serious may produce thrombosis, to sufferer, damages.Therefore, the medical worker usually need to get a tube sealing syringe with the puncture needle tubing inlying catheter is rinsed to tube sealing, during the tube sealing operation, syringe needle tube penetrates from the calparine cap plug, enter the calparine cap inner chamber, must occupy the calparine cap intracavity space, and tube sealing is while finishing, the medical worker needs limit to withdraw from the syringe needle tube edge to inject tube-sealing solution, replenish the space that needle tubing occupies, in order to avoid form multiple the pressure in inlying catheter.This complex operation and the space that still can residual tube-sealing solution finally can't fill up, negative pressure still can produce, for remedy such and insufficient, traditionally after not going up flow-stopping clip clamping extension tube, flow-stopping clip need to be slided toward the conduit tube component direction, make extension tube be extruded gradually, to extend liquid in pipe and clamp-on the inlying catheter inner chamber, drive refluence blood out of, but when flow-stopping clip and extension tube clamp, resistance to sliding is large, the drawing extension tube, easily extension tube is elongated and attenuated, conduit tube component is during keeping somewhere, through repeatedly drawing, serious meeting is broken extension tube and is caused hemorrhage, add that the conduit tube component indwelling sticks on the sufferer health, the extension tube limited length, if drawing is careless, conduit tube component can be pulled out to the sufferer health, for fear of above-mentioned accident, occur, it is overcautious when the medical worker operates, sometimes flow-stopping clip drawing length is inadequate, or can not guarantee fully the conduit inner blood is driven totally, medical personnel's workload and psychological burden have been increased therefore this mode of operation is invisible.
The utility model content
This utility model purpose is to overcome the deficiencies in the prior art part and provides a kind of can eliminate negative pressure and the easy to operate medical infusion joint with stop valve of plugging into non small cellCatheter.
The purpose of this utility model realizes by following approach.
The medical infusion joint with stop valve of plugging into non small cellCatheter, comprise Connection Block and fittings body, the extension tube of Connection Block front end and inlying catheter is plugged into, fittings body rear end and transfusion device are plugged into, it forms main points and is: also comprise a kind of joint pedestal, this joint pedestal or with Connection Block Construction integration or split structure but affixed with Connection Block, the fittings body leading portion is nested with in joint pedestal inner chamber in the mode that can advance and retreat, there is the space that fittings body advances between fittings body and joint pedestal inner chamber or between fittings body and Connection Block inner chamber or between fittings body and joint pedestal inner chamber and Connection Block inner chamber, the fittings body inner chamber is communicated with the Connection Block inner chamber by a kind of stop valve, this stop valve is arranged on above-mentioned fittings body and advances in space and stop into the wall cut-off and touching with corresponding inner chamber through the fittings body be advancing to the position.
Joint pedestal and Connection Block inner chamber form an airtight die cavity like this, and the advance and retreat of utilizing fittings body axially to pass change airtight die cavity volume size.Fittings body is stepped back, and airtight die cavity increases; Fittings body advances, and airtight die cavity reduces, and is advancing to the position the infusion channel cut-off.During transfusion work, fittings body is first stepped back, and stop valve is opened, and airtight die cavity increases, and is convenient to hold more liquid; Transfusion finishes needle tubing to be exited simultaneously, and fittings body advances, airtight die cavity from large to small, thereby fill up the space that former needle tubing occupies, prevent negative pressure or discharge conduit inner blood intravasation to eliminate negative pressure.This prevent negative pressure and eliminate the mode of negative pressure simple, effective, easy to operate.And the intervention of stop valve, ended again infusion channel when eliminating negative pressure, not only health, safety more, and (otherwise stop valve ends must first to step back fittings body when structure has been guaranteed again to infuse, can't infuse), make transfusion finish rear fittings body and there is the space of propelling to eliminate negative pressure.And the process of gradually damming along with the fittings body propelling makes stop valve also have the effect of flow control valve.
No matter be the needleless connection modes or have the pin connection modes can use this medical infusion joint described in the utility model.
The fittings body back segment is generally used for the structure that calparine cap or other and transfusion device are plugged into is set.
The purpose of this utility model can also realize by following approach.
The fittings body leading portion can have various ways to be nested with in joint pedestal inner chamber:
Also include the device that a kind of adjustable diameter and screw adjusting is axially passed, the mode and the joint pedestal that through this device fittings body, are able to advancing and retreat are socketed.
The device of axially passing by adjustable diameter and screw adjusting is like this realized the axial passing of fittings body opposing tabs pedestal and retreats.
The device that adjustable diameter and screw adjusting is axially passed has multiple concrete structure available, and wherein two kinds of following discloses are a kind of:
The fittings body leading portion is plugged in joint pedestal inner chamber and with joint pedestal spiral and is connected.
Like this, the swivel body is by fittings body opposing tabs pedestal helical rotation, thereby allow, fittings body opposing tabs pedestal is spiral to advance and spiral retreating.
The place ahead of fittings body and joint pedestal spiral linkage section is provided with a kind of inner seal liner.
Joint pedestal inner chamber is a kind of pre-large post-small ladder die cavity, large-scale cavity wall setting screws female thread and Connection Block corresponding part interlocking, small-sized cavity wall arranges the advance and retreat female thread and is connected with fittings body scalable spiral, be provided with a kind of shoulder block before the advance and retreat female thread, before inner seal liner is arranged on this shoulder block, the fittings body paragraph that inner seal liner is corresponding therewith is a kind of cylinder.
The concrete structure of another kind of the device that above-mentioned adjustable diameter and screw adjusting is axially passed can be:
The cannelure that fittings body front end indent one is darker, the stem stem of this cannelure inboard slides in the opening up inner chamber of joint pedestal back segment, the external groove sidevall of this cannelure arranges screw thread and connects with the corresponding spiral of external screw thread on joint pedestal back segment periphery wall, this spiral connects to form the device that adjustable diameter and screw adjusting is axially passed, and the fittings body leading portion is trapped in the inner chamber of stop collar, the stop collar rear end face is provided with spacing seam, fittings body front end correspondence arranges spacing shoulder block, stop collar and joint pedestal are affixed, the corresponding external screw thread interlocking of female thread and Connection Block is set in the downward opening inner chamber of joint pedestal leading portion, downward projection one stem stem of this inner chamber SMIS, having penetrating via in this stem stem is communicated with respectively with fittings body inner chamber and Connection Block inner chamber.
Another concrete structure of the device that above-mentioned adjustable diameter and screw adjusting is axially passed can be:
Fittings body is comprised of screw rod and lift head, the seal rubber plug of plugging into needle tubing is positioned at the screw rod tail end, the screw rod leading portion is plugged in the lift head inner chamber and with its spiral and is connected, screw rod also is connected with joint pedestal axial limiting, but lift head is nested with in the inner chamber of joint pedestal in the mode of slippage before and after the opposing tabs pedestal.
Like this, due to screw rod, by axial limiting, helical rotation is broken down into idle running and moves forward and backward, and wherein dallies and is completed by screw rod, moves forward and backward and is completed by lift head.
Joint pedestal inner chamber is a kind of pre-large post-small ladder die cavity, large-scale cavity wall setting screws female thread and Connection Block corresponding part interlocking, small-sized cavity wall arranges cylindrical hole and the socket of lift head matched in clearance, this cylindrical hole length is greater than the length of the corresponding paragraph of lift head, cylindrical hole and screw between screw thread and there is a shoulder block, before a kind of inner seal liner is arranged on this shoulder block, the front end of lift head protrudes in the Connection Block inner chamber through the endoporus of this this inner seal liner.
The screw thread that above-mentioned realization advance and retreat are regulated is a kind of trapezoidal thread preferably.
Except the device that adjustable diameter and screw adjusting is axially passed, the fittings body leading portion can also be nested with by this way in joint pedestal inner chamber:
The fittings body leading portion is plugged in joint pedestal inner chamber with scalable slip mode, and fittings body leading portion and joint pedestal inner chamber carry out being connected with damping through the sealing ring between the two.
Thisly with being connected of damping, both can realize sealing, but also can strengthen feel viscous fittings body.
Also include and a kind ofly for limiting the fittings body that slippage puts in place, be difficult to axially displaced bayonet unit again, this bayonet unit is arranged between fittings body and joint pedestal inner chamber.
No matter step back or the fittings body advanced, once slippage puts in place, wished no longer to slide that this fittings body, bayonet unit can be used for the landing nipple body and make it difficult axially displaced voluntarily before infusing operation next time.
This bayonet unit has multiple concrete structure available, and wherein two kinds of following discloses are a kind of:
Bayonet unit is a kind of Elastic buckle, forms the draw-in groove clamping put in place through pretightning force buckle and the slippage of spring by being embedded in buckle on joint pedestal sidewall, spring and the corresponding draw-in groove be arranged on the fittings body sidewall.
This Elastic buckle can be realized location, can under the effect of push-pull effort, break away from clamping again.
Another kind is:
The fittings body leading portion is plugged in joint pedestal inner chamber with scalable slippage and rotary way, bayonet unit is comprised of bayonet lock and sliding tray, the bayonet lock emergence is on the fittings body sidewall, the sliding tray correspondence is arranged on joint pedestal intracavity sidewall, sliding tray is comprised of axial groove and transverse groove, the bayonet lock head of emergence slides in sliding tray, pass the fittings body put in place along axial groove through rotating that sliding sleeve enters in transverse groove and with the axial clamping of joint pedestal.
Transverse groove has gradient, but oblique angle is less than Self-locking angle.
Gradient is convenient to be guided into axial groove, and be less than Self-locking angle can prevent its under the effect of axial force from line slip.
Further optimization about stop valve is:
The flap of stop valve is positioned at the fittings body termination, stop valve sealing surface or be positioned at joint pedestal inner chamber and stop on wall or be positioned at the Connection Block inner chamber and stop on wall.
Like this, fittings body is again valve rod.
Further optimization can be following several concrete structure:
The fittings body inner chamber comprises vertical passageway and interconnection, interconnection is arranged in fittings body end inner core, the fittings body end is less than joint pedestal inner chamber, gap between the two is communicated with interconnection as infusion channel, the fittings body termination is a kind of sharp cone distal, it is a kind of truncated cone-shaped step corresponding with this sharp cone distal that joint pedestal inner chamber or Connection Block inner chamber stop into wall, and the interior reducing of this truncated cone-shaped step is the infusion channel mouth.
When fittings body sharp cone distal termination when corresponding type conical bench touches, the stop valve closure; And retreat when fittings body, stop valve is opened, and transfusion enters reducing in type conical bench via fittings body vertical passageway, interconnection, radial clearance.
The fittings body inner chamber comprises vertical passageway, flap is a kind of a plurality of elasticity gates that are coated on the fittings body termination, it is a kind of and the close-shaped corresponding step of these a plurality of elasticity gates that joint pedestal inner chamber or Connection Block inner chamber stop into wall, the step internal orifice is infusion channel, through with the touching of this step, the closed and shutoff of a plurality of elasticity gates terminates in fittings body vertical passageway mouth.
Like this, fittings body is advancing to the position, elasticity gate closure, stop valve cut-off; Fittings body retreats and lifts, and the elasticity gate is opened because of self elasticity, and stop valve is opened.
The fittings body inner chamber comprises vertical passageway, flap is positioned at the vertical passageway mouth of fittings body termination, it is that a kind of middle part is toward prominent protruding sharp cone distal or the truncated cone-shaped of fittings body direction that joint pedestal inner chamber or Connection Block inner chamber stop into wall, this stops be distributed with a plurality of infusion channel into wall on the circumferential position of mouth periphery, vertical passageway, through the propelling of fittings body, the stopping of this sharp cone distal or truncated cone-shaped extend into the fittings body vertical passageway into the prominent protruding middle part of wall and shutoff terminates in this vertical passageway mouth.
Owing to stopping the periphery that is positioned at the vertical passageway mouth into the infusion channel on wall, be positioned at the zone beyond the mouth bore of vertical passageway, like this, when stopping into the prominent protruding middle part shutoff of wall during at the vertical passageway mouth, this stops into the infusion channel on wall and can't be communicated with vertical passageway, thereby is cut off.
In sum, this utility model has following advantage compared to existing technology: the mode that prevents negative pressure and elimination negative pressure is simple, effective, easy to operate.And the intervention of stop valve, ended again infusion channel when eliminating negative pressure, not only health, safety more, and (otherwise stop valve ends must first to step back fittings body when structure has been guaranteed again to infuse, can't infuse), make transfusion finish rear fittings body and there is the space of propelling to eliminate negative pressure.And the process of gradually damming along with the fittings body propelling makes stop valve also have the effect of flow control valve.
The accompanying drawing explanation
Fig. 1 is the structural representation of a kind of remaining needle in prior art;
Fig. 2 is used containing needle structure schematic diagram described in the utility model and the medical infusion joint with stop valve that non small cellCatheter is plugged into;
Fig. 3 be the described medical infusion joint with stop valve of plugging into non small cellCatheter of this utility model embodiment mono-cut-off state structural representation;
Fig. 4 is the structural representation of the described medical infusion joint with stop valve of plugging into non small cellCatheter of this utility model embodiment mono-in opening;
Fig. 5 is the structural representation of the described medical infusion joint with stop valve of plugging into non small cellCatheter of this utility model embodiment bis-;
Fig. 6 is that the A of Fig. 5 is to view;
Fig. 7 is the structural representation of the described medical infusion joint with stop valve of plugging into non small cellCatheter of this utility model embodiment tri-;
Fig. 8 is the structural representation of the described medical infusion joint with stop valve of plugging into non small cellCatheter of this utility model most preferred embodiment.
Label declaration
1 Connection Block 11 infusion channel 2 fittings body 21 screw rod 22 lift head 23 vertical passageway 24 bayonet lock 25 interconnection 26 gap 27 stop collars
3 joint pedestal 31 adjustable screw devices 32 screw screw 33 sliding tray 4 stop valve 41 flap 42 sealing surface 5 seal rubber plug 6 extension tube 7 flow-stopping clip 8 conduit tube component 9 joint overcoats.
The specific embodiment
Embodiment mono-:
With reference to Fig. 2, a kind of remaining needle that uses the medical infusion joint with stop valve that described in the utility model and non small cellCatheter plug into, be comprised of Connection Block 1, fittings body 2, joint pedestal 3, seal rubber plug 5, extension tube 6, flow-stopping clip 7 and conduit tube component.
With reference to Fig. 3 and Fig. 4, the medical infusion joint with stop valve of plugging into non small cellCatheter, comprise Connection Block 1, fittings body 2 and joint pedestal 3, the extension tube 6 of Connection Block front end and inlying catheter is plugged into, and to screw screw 32 affixed with Connection Block 1 with Connection Block 1 split structure but by a kind of for joint pedestal 3.Fittings body 2 leading portions are plugged in joint pedestal 3 inner chambers and by a kind of adjustable screw device 31 and are connected with joint pedestal 3 spirals, have the space that fittings body 2 adjustable diameter and screw adjusting are axially passed between between fittings body 2 and joint pedestal 3 inner chambers, fittings body 2 inner chambers are communicated with the Connection Block inner chamber by a kind of stop valve 4.Joint pedestal 3 inner chambers are a kind of pre-small post-large ladder die cavity, and large-scale cavity wall back segment arranges the advance and retreat female thread and is connected with fittings body 2 scalable spirals.The step at size die cavity junction surface is a kind of stopping into wall.The flap 41 of stop valve 4 is positioned at the fittings body termination, and sealing surface 42 is that this of joint pedestal inner chamber stops into wall.Fittings body 2 inner chambers comprise vertical passageway 23, flap 41 is a kind of two elasticity gates that are coated on the fittings body termination, it is a kind of and the close-shaped corresponding step of these a plurality of elasticity gates that joint pedestal inner chamber stops into wall, the little die cavity of step internal orifice is infusion channel, through with the touching of this step, the closed and shutoff of two elasticity gates terminate in 23 mouthfuls of fittings body vertical passageways.This elasticity gate is made by flexible barrier material, its back segment encircles in the form of a ring and encloses in the seal groove that is fixed on fittings body 2 peripheries, end and form a kind of sealing ring, thereby allows fittings body 2 leading portions and joint pedestal 3 inner chambers carry out being connected with damping through the sealing circle.Above-mentioned adjusting screw thread is a kind of trapezoidal thread.
It is same as the prior art that the present embodiment is not stated part.
Embodiment bis-:
With reference to Fig. 5, the medical infusion joint with stop valve of plugging into non small cellCatheter, comprise Connection Block 1, fittings body 2 and joint pedestal 3, the extension tube 6 of Connection Block 1 front end and inlying catheter is plugged into, fittings body 2 rear ends and transfusion device are plugged into, and to screw screw 32 affixed with Connection Block 1 with Connection Block 1 split structure but by a kind of for joint pedestal 3.There is the space that fittings body 2 advances between fittings body 2 and joint pedestal 3 inner chambers, fittings body 2 inner chambers are communicated with the Connection Block inner chamber by a kind of stop valve 4, and this stop valve 4 is arranged on above-mentioned fittings body 2 and advances in space and stop into the wall cut-off and touching with corresponding inner chamber through the fittings body 2 be advancing to the position.Joint pedestal 3 inner chambers are a kind of pre-small post-large ladder die cavity, and fittings body 2 leading portions are plugged in this large die cavity with scalable slippage and rotary way, and carry out being connected with damping through the sealing ring between the two.The step at size die cavity junction surface is exactly aforesaid stopping into wall.The flap 41 of stop valve 4 is positioned at the fittings body termination, and sealing surface 42 is exactly that this stops into wall, and fittings body 2 is again valve rod.Fittings body 2 inner chambers comprise vertical passageway 23 and interconnection 25, interconnection 25 is arranged in fittings body 2 end inner cores, fittings body 2 ends are less than joint pedestal inner chamber, gap 26 between the two is communicated with interconnection 25 as infusion channel, fittings body 2 terminations are a kind of sharp cone distal, aforementioned to stop into wall be a kind of truncated cone-shaped step corresponding with this sharp cone distal, and the interior reducing of this truncated cone-shaped step is the infusion channel mouth.
When fittings body 2 sharp cone distal terminations when corresponding type conical bench touches, the stop valve closure; And retreat when fittings body, stop valve is opened, and transfusion enters reducing in type conical bench via fittings body vertical passageway 23, interconnection 25, radial clearance 26.
With reference to Fig. 6, bayonet unit is comprised of bayonet lock 24 and sliding tray 33, bayonet lock 24 emergences are on fittings body 2 sidewalls, sliding tray 33 correspondences are arranged on joint pedestal 3 intracavity sidewalls and run through sidewall, sliding tray 33 is comprised of axial groove and transverse groove, 24 of the bayonet locks of emergence slide in sliding tray 33, pass the fittings body 2 put in place along axial groove through rotating that sliding sleeve enters in transverse groove and with the axial clamping of joint pedestal 3.Transverse groove has gradient, but oblique angle is less than Self-locking angle.
It is identical with embodiment mono-that the present embodiment is not stated part.
Embodiment tri-:
With reference to Fig. 7, the medical infusion joint with stop valve of plugging into non small cellCatheter, comprise Connection Block 1, fittings body 2 and joint pedestal 3, the extension tube 6 of Connection Block 1 front end and inlying catheter is plugged into, fittings body 2 rear ends and transfusion device are plugged into, and to screw screw 32 affixed with Connection Block 1 with Connection Block 1 split structure but by a kind of for joint pedestal 3.There is the space that fittings body 2 advances between fittings body 2 and joint pedestal 3 inner chambers, fittings body 2 inner chambers are communicated with the Connection Block inner chamber by a kind of stop valve 4, and this stop valve 4 is arranged on above-mentioned fittings body 2 and advances in space and stop into the wall cut-off and touching with corresponding inner chamber through the fittings body 2 be advancing to the position.The darker cannelure of fittings body 2 front end indent one, the stem stem of this cannelure inboard slides in the opening up inner chamber of joint pedestal 3 back segments, the external groove sidevall of this cannelure arranges screw thread and connects with the corresponding spiral of external screw thread on joint pedestal back segment periphery wall, and this spiral connects to form adjustable screw device 31.And fittings body 2 leading portions are trapped in the inner chamber of stop collar 27, stop collar 27 rear end faces are provided with spacing seam, and fittings body front end correspondence arranges spacing shoulder block, and stop collar 27 is affixed with joint pedestal 3.Female thread is set in the downward opening inner chamber of joint pedestal 3 leading portion and with corresponding external screw thread interlocking the composition of Connection Block 1, screws screw 32.Downward projection one stem stem of this inner chamber SMIS, there is penetrating via in this stem stem, this penetrating via is by vertically forming than major path and oblique smaller channels, the opening up inner chamber of oblique smaller channels inclination penetrator pedestal 3 back segments, through part is a shoulder block, and this shoulder block is aforesaid stopping into wall and as the sealing surface 42 of stop valve 4.Fittings body 2 inner chambers comprise vertical passageway 23, flap 41 is the fittings body termination, total a plurality of oblique smaller channels mouths are arranged on the circumferential position of these 23 mouthfuls of peripheries, vertical passageway, propelling through fittings body 2, this fittings body end closure is combined in and stops on wall, ended being communicated with of vertical passageway 23 and oblique smaller channels.
It is identical with embodiment mono-that the present embodiment is not stated part.
Most preferred embodiment:
With reference to Fig. 8, the medical infusion joint with stop valve of plugging into non small cellCatheter, comprise Connection Block 1, fittings body 2 and joint pedestal 3, the extension tube 6 of Connection Block 1 front end and inlying catheter is plugged into, and to screw screw 32 affixed with Connection Block 1 with Connection Block 1 split structure but by a kind of for joint pedestal 3.Fittings body 2 leading portions are plugged in joint pedestal 3 inner chambers, and fittings body 2 inner chambers are communicated with Connection Block 1 inner chamber by a kind of stop valve 4.Fittings body 2 is comprised of screw rod 21 and lift head 22, the seal rubber plug 5 of plugging into Transfusion needle pipe is positioned at screw rod 21 tail ends, screw rod 21 leading portions are plugged in lift head 22 inner chambers and with its spiral and are connected, screw rod 21 also is connected with joint pedestal 3 axial limitings, but lift head 22 is nested with in the inner chamber of joint pedestal 3 in the mode of opposing tabs pedestal 3 front and back slippages.Joint pedestal 3 inner chambers are a kind of pre-large post-small ladder die cavity, large-scale cavity wall setting screws screw 32 and Connection Block 1 corresponding part interlocking, small-sized cavity wall arranges cylindrical hole and lift head 22 matched in clearance sockets, this cylindrical hole length is greater than the length of lift head 22 corresponding paragraphs, thereby makes lift head 22 and even fittings body 2 have the space that adjustable diameter and screw adjusting is axially passed.Cylindrical hole and screw between screw 32 and have a shoulder block, before a kind of inner seal liner is arranged on this shoulder block, the front end of lift head protrudes in Connection Block 1 inner chamber through the endoporus of this this inner seal liner.Have the space that fittings body 2 advances between fittings body 2 and Connection Block 1 inner chamber, stop valve 4 is arranged on above-mentioned fittings body and advances in space and stop into the wall cut-off and touching with Connection Block 1 inner chamber through the fittings body be advancing to the position.Fittings body 2 inner chambers comprise screw rod 21 inner chambers and lift head 22 inner chambers, it is all vertical passageway 23, flap 41 is positioned at the vertical passageway mouth of lift head 22 terminations, it is that a kind of middle part is toward prominent protruding sharp cone distal or the truncated cone-shaped of fittings body direction that aforementioned Connection Block 1 inner chamber stops into wall, this stops be distributed with a plurality of infusion channel 11 into wall on the circumferential position of mouth periphery, vertical passageway, through the propelling of fittings body 2, the stopping of this sharp cone distal or truncated cone-shaped extend into fittings body vertical passageway 23 into the prominent protruding middle part of wall and shutoff terminates in this vertical passageway mouth.Owing to stopping the periphery that is positioned at the vertical passageway mouth into the infusion channel 11 on wall, be positioned at the zone beyond the mouth bore of vertical passageway, like this, when stopping into the prominent protruding middle part shutoff of wall during at the vertical passageway mouth, this stops into the infusion channel 11 on wall and can't be communicated with vertical passageway 23, thereby is cut off.
It is identical with embodiment mono-that the present embodiment is not stated part.
Claims (16)
1. the medical infusion joint with stop valve of plugging into non small cellCatheter, comprise Connection Block and fittings body, the extension tube of Connection Block front end and inlying catheter is plugged into, fittings body rear end and transfusion device are plugged into, it is characterized in that, also comprise a kind of joint pedestal, this joint pedestal or with Connection Block Construction integration or split structure but affixed with Connection Block, the fittings body leading portion is nested with in joint pedestal inner chamber in the mode that can advance and retreat, there is the space that fittings body advances between fittings body and joint pedestal inner chamber or between fittings body and Connection Block inner chamber or between fittings body and joint pedestal inner chamber and Connection Block inner chamber, the fittings body inner chamber is communicated with the Connection Block inner chamber by a kind of stop valve, this stop valve is arranged on above-mentioned fittings body and advances in space and stop into the wall cut-off and touching with corresponding inner chamber through the fittings body be advancing to the position.
2. the medical infusion joint with stop valve that according to claim 1 and non small cellCatheter is plugged into, it is characterized in that, also include the device that a kind of adjustable diameter and screw adjusting is axially passed, the mode and the joint pedestal that through this device fittings body, are able to advancing and retreat are socketed.
3. the medical infusion joint with stop valve of plugging into non small cellCatheter according to claim 2, is characterized in that, the fittings body leading portion is plugged in joint pedestal inner chamber and with joint pedestal spiral and is connected.
4. the medical infusion joint with stop valve that according to claim 3 and non small cellCatheter is plugged into, it is characterized in that, joint pedestal inner chamber is a kind of pre-large post-small ladder die cavity, large-scale cavity wall setting screws female thread and Connection Block corresponding part interlocking, small-sized cavity wall arranges the advance and retreat female thread and is connected with fittings body scalable spiral, be provided with a kind of shoulder block before the advance and retreat female thread, before inner seal liner is arranged on this shoulder block, the fittings body paragraph that inner seal liner is corresponding therewith is a kind of cylinder.
5. the medical infusion joint with stop valve that according to claim 2 and non small cellCatheter is plugged into, it is characterized in that, the cannelure that fittings body front end indent one is darker, the stem stem of this cannelure inboard slides in the opening up inner chamber of joint pedestal back segment, the external groove sidevall of this cannelure arranges screw thread and connects with the corresponding spiral of external screw thread on joint pedestal back segment periphery wall, this spiral connects to form the device that adjustable diameter and screw adjusting is axially passed, and the fittings body leading portion is trapped in the inner chamber of stop collar, the stop collar rear end face is provided with spacing seam, fittings body front end correspondence arranges spacing shoulder block, stop collar and joint pedestal are affixed, the corresponding external screw thread interlocking of female thread and Connection Block is set in the downward opening inner chamber of joint pedestal leading portion, downward projection one stem stem of this inner chamber SMIS, having penetrating via in this stem stem is communicated with respectively with fittings body inner chamber and Connection Block inner chamber.
6. the medical infusion joint with stop valve that according to claim 2 and non small cellCatheter is plugged into, it is characterized in that, fittings body is comprised of screw rod and lift head, the seal rubber plug of plugging into needle tubing is positioned at the screw rod tail end, the screw rod leading portion is plugged in the lift head inner chamber and with its spiral and is connected, screw rod also is connected with joint pedestal axial limiting, but lift head is nested with in the inner chamber of joint pedestal in the mode of slippage before and after the opposing tabs pedestal.
7. the medical infusion joint with stop valve that according to claim 6 and non small cellCatheter is plugged into, it is characterized in that, joint pedestal inner chamber is a kind of pre-large post-small ladder die cavity, large-scale cavity wall setting screws female thread and Connection Block corresponding part interlocking, small-sized cavity wall arranges cylindrical hole and the socket of lift head matched in clearance, this cylindrical hole length is greater than the length of the corresponding paragraph of lift head, cylindrical hole and screw between screw thread and there is a shoulder block, before a kind of inner seal liner is arranged on this shoulder block, the front end of lift head protrudes in the Connection Block inner chamber through the endoporus of this this inner seal liner.
8. the medical infusion joint with stop valve that according to claim 1 and non small cellCatheter is plugged into, it is characterized in that, the fittings body leading portion is plugged in joint pedestal inner chamber with scalable slip mode, and fittings body leading portion and joint pedestal inner chamber carry out being connected with damping through the sealing ring between the two.
9. the medical infusion joint with stop valve that according to claim 2 and non small cellCatheter is plugged into, it is characterized in that, the fittings body leading portion is plugged in joint pedestal inner chamber with scalable slip mode, fittings body leading portion and joint pedestal inner chamber carry out being connected with damping through the sealing ring between the two, also include and a kind ofly for limiting the fittings body that slippage puts in place, be difficult to axially displaced bayonet unit again, this bayonet unit is arranged between fittings body and joint pedestal inner chamber.
10. the medical infusion joint with stop valve that according to claim 9 and non small cellCatheter is plugged into, it is characterized in that, bayonet unit is a kind of Elastic buckle, form the draw-in groove clamping put in place through pretightning force buckle and the slippage of spring by being embedded in buckle on joint pedestal sidewall, spring and the corresponding draw-in groove be arranged on the fittings body sidewall.
11. the medical infusion joint with stop valve of plugging into non small cellCatheter according to claim 9, it is characterized in that, the fittings body leading portion is plugged in joint pedestal inner chamber with scalable slippage and rotary way, bayonet unit is comprised of bayonet lock and sliding tray, the bayonet lock emergence is on the fittings body sidewall, the sliding tray correspondence is arranged on joint pedestal intracavity sidewall, sliding tray is comprised of axial groove and transverse groove, the bayonet lock head of emergence slides in sliding tray, pass the fittings body put in place along axial groove through rotating that sliding sleeve enters in transverse groove and with the axial clamping of joint pedestal.
12. the medical infusion joint with stop valve of plugging into non small cellCatheter according to claim 11 is characterized in that transverse groove has gradient, but oblique angle is less than Self-locking angle.
13. the medical infusion joint with stop valve of plugging into non small cellCatheter according to claim 1, it is characterized in that, the flap of stop valve is positioned at the fittings body termination, stop valve sealing surface or be positioned at joint pedestal inner chamber and stop on wall or be positioned at the Connection Block inner chamber and stop on wall.
14. according to the described medical infusion joint with stop valve of plugging into non small cellCatheter of claim 1 or 13, it is characterized in that, the fittings body inner chamber comprises vertical passageway and interconnection, interconnection is arranged in fittings body end inner core, the fittings body end is less than joint pedestal inner chamber, gap between the two is communicated with interconnection as infusion channel, the fittings body termination is a kind of sharp cone distal, it is a kind of truncated cone-shaped step corresponding with this sharp cone distal that joint pedestal inner chamber or Connection Block inner chamber stop into wall, the interior reducing of this truncated cone-shaped step is the infusion channel mouth, when fittings body sharp cone distal termination when corresponding type conical bench touches, the stop valve closure, and work as fittings body, retreat, stop valve is opened, transfusion is via the fittings body vertical passageway, interconnection, radial clearance and enter reducing in type conical bench.
15. the medical infusion joint with stop valve of plugging into non small cellCatheter according to claim 13, it is characterized in that, the fittings body inner chamber comprises vertical passageway, flap is a kind of a plurality of elasticity gates that are coated on the fittings body termination, it is a kind of and the close-shaped corresponding step of these a plurality of elasticity gates that joint pedestal inner chamber or Connection Block inner chamber stop into wall, the step internal orifice is infusion channel, through with the touching of this step, the closed and shutoff of a plurality of elasticity gates terminates in fittings body vertical passageway mouth.
16. the medical infusion joint with stop valve of plugging into non small cellCatheter according to claim 13, it is characterized in that, the fittings body inner chamber comprises vertical passageway, flap is positioned at the vertical passageway mouth of fittings body termination, it is that a kind of middle part is toward prominent protruding sharp cone distal or the truncated cone-shaped of fittings body direction that joint pedestal inner chamber or Connection Block inner chamber stop into wall, this stops be distributed with a plurality of infusion channel into wall on the circumferential position of mouth periphery, vertical passageway, propelling through fittings body, the stopping of this sharp cone distal or truncated cone-shaped extend into the fittings body vertical passageway into the prominent protruding middle part of wall and shutoff terminates in this vertical passageway mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320262939 CN203342194U (en) | 2013-05-15 | 2013-05-15 | Medical infusion adapter which is provided with check valve and connected with extracorporal indwelling catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320262939 CN203342194U (en) | 2013-05-15 | 2013-05-15 | Medical infusion adapter which is provided with check valve and connected with extracorporal indwelling catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203342194U true CN203342194U (en) | 2013-12-18 |
Family
ID=49742137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320262939 Expired - Fee Related CN203342194U (en) | 2013-05-15 | 2013-05-15 | Medical infusion adapter which is provided with check valve and connected with extracorporal indwelling catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203342194U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043161A (en) * | 2014-06-27 | 2014-09-17 | 陈伟权 | Straight-type indwelling needle |
| WO2014183272A1 (en) * | 2013-05-15 | 2014-11-20 | 福建省百仕韦医用高分子股份有限公司 | Medical infusion connector connected to extracorporal indwelling catheter and having stop valve |
| WO2014183271A1 (en) * | 2013-05-15 | 2014-11-20 | 福建省百仕韦医用高分子股份有限公司 | Pull positive pressure type medical infusion connector connected to extracorporal indwelling catheter |
| WO2015017961A1 (en) * | 2013-08-03 | 2015-02-12 | Zhang Jianming | Medical infusion joint having cut-off valve |
-
2013
- 2013-05-15 CN CN 201320262939 patent/CN203342194U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014183272A1 (en) * | 2013-05-15 | 2014-11-20 | 福建省百仕韦医用高分子股份有限公司 | Medical infusion connector connected to extracorporal indwelling catheter and having stop valve |
| WO2014183271A1 (en) * | 2013-05-15 | 2014-11-20 | 福建省百仕韦医用高分子股份有限公司 | Pull positive pressure type medical infusion connector connected to extracorporal indwelling catheter |
| CN105209089A (en) * | 2013-05-15 | 2015-12-30 | 福建省百仕韦医用高分子股份有限公司 | Medical infusion connector connected to extracorporal indwelling catheter and having stop valve |
| CN105209089B (en) * | 2013-05-15 | 2018-01-30 | 福建省百仕韦医用高分子股份有限公司 | The medical infusion joint with stop valve plugged into non small cellCatheter |
| WO2015017961A1 (en) * | 2013-08-03 | 2015-02-12 | Zhang Jianming | Medical infusion joint having cut-off valve |
| CN104043161A (en) * | 2014-06-27 | 2014-09-17 | 陈伟权 | Straight-type indwelling needle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203342118U (en) | Pull positive pressure type medical infusion adapter which is connected with extracorporal indwelling catheter | |
| CN203342194U (en) | Medical infusion adapter which is provided with check valve and connected with extracorporal indwelling catheter | |
| CN105209089B (en) | The medical infusion joint with stop valve plugged into non small cellCatheter | |
| CN203263917U (en) | Medical transfusion connector connected with external indwelling catheter | |
| CN203802874U (en) | Medical transfusion joint with stop valve | |
| CN105982763A (en) | Medicine feeding device | |
| CN105228670B (en) | The medical infusion joint plugged into non small cellCatheter | |
| CN103933635B (en) | Switchable venous detaining needle | |
| CN105163773B (en) | The pull positive-pressure type medical infusion connector plugged into non small cellCatheter | |
| CN203458649U (en) | Flow-stop switch for in-vitro infusion conduit | |
| CN203090042U (en) | Catheter connecting device | |
| CN203694221U (en) | Annular groove positioning type external transfusion conduit stopping switch | |
| CN204121527U (en) | A kind of reverse flow resistant indwelling needle | |
| CN105407942B (en) | Annular groove positions the external transfusion catheter fluid stopping switch of formula | |
| CN204219534U (en) | A kind of safe medical syringe preventing interface slippage | |
| CN208081516U (en) | Dispensing syringe with degassing function | |
| CN205360221U (en) | Isobaric tube clipper of constant volume of two -chamber PICC pipe | |
| CN205252202U (en) | Dedicated transfusion device for chemotherapy | |
| CN105268045B (en) | Pre-filled catheter flusher | |
| CN215780330U (en) | Drainage device with flushing function for hepatobiliary department | |
| CN219681368U (en) | Novel high polymer material prefilled syringe | |
| CN103691037A (en) | Improved remote injection device | |
| CN214911608U (en) | Device for preventing blood backflow | |
| CN218739077U (en) | Lumbar puncture needle for intrathecal injection | |
| CN209917018U (en) | Abdominal cavity drainage tube convenient to insert from puncture cannula |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |