CN203342118U - Pull positive pressure type medical infusion adapter which is connected with extracorporal indwelling catheter - Google Patents
Pull positive pressure type medical infusion adapter which is connected with extracorporal indwelling catheter Download PDFInfo
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- CN203342118U CN203342118U CN 201320263467 CN201320263467U CN203342118U CN 203342118 U CN203342118 U CN 203342118U CN 201320263467 CN201320263467 CN 201320263467 CN 201320263467 U CN201320263467 U CN 201320263467U CN 203342118 U CN203342118 U CN 203342118U
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- fittings body
- inner chamber
- joint
- pressure type
- type medical
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Abstract
The utility model relates to a device for introducing media into the body, in particular to a pull positive pressure type medical infusion adapter which is connected with an extracorporal indwelling catheter. The pull positive pressure type medical infusion adapter which is 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 an adapter body is connected with an infusion device. The pull positive pressure type medical infusion adapter which is connected with the extracorporal indwelling catheter is characterized by further comprising an adapter base. The adapter base is integrally constructed with the connection base or the adapter base is constructed with the connection base in a split mode, and the adapter base is fixedly connected with the connection seat. The front segment of the adapter body can be arranged into an inner cavity of the adapter base in an inserted, telescopic and sliding mode. The pull positive pressure type medical infusion adapter has the advantages that and the manner of preventing and eliminating 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 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 pull positive-pressure type medical infusion joint 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 have needle adapter body 2 usually to be called again calparine cap.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 easy to operate pull positive-pressure type medical infusion joint of plugging into non small cellCatheter.
The purpose of this utility model realizes by following approach.
The pull positive-pressure type medical infusion joint 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 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, there is the space that fittings body is axially passed 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.
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.During transfusion work, fittings body is first stepped back, 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.
No matter be the needleless connection modes or have the pin connection modes can use above-mentioned medical infusion joint.
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.
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 for technical solutions of the utility model is:
The fittings body inner chamber is communicated with the Connection Block inner chamber by a kind of stop valve, and this stop valve is arranged on 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.
Further optimization about stop valve is: the flap of stop valve is positioned at the fittings body termination, 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 pull positive-pressure type medical infusion joint that non small cellCatheter is plugged into;
Fig. 3 is the structural representation of the described pull positive-pressure type medical infusion joint of plugging into non small cellCatheter of this utility model most preferred embodiment;
Fig. 4 is that the A of Fig. 3 is to view;
Label declaration
1 Connection Block 2 fittings body 23 vertical passageway 24 bayonet lock 25 interconnection 26 gap 3 joint pedestal 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
Most preferred embodiment:
With reference to Fig. 2, the remaining needle of the pull positive-pressure type medical infusion joint that a kind of use and non small cellCatheter are plugged 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, the pull positive-pressure type medical infusion joint 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; When fittings body retreats, 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. 4, 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 same as the prior art that the present embodiment is not stated part.
Claims (10)
1. the pull positive-pressure type medical infusion joint 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 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, there is the space that fittings body is axially passed 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.
2. the pull positive-pressure type medical infusion joint that according to claim 1 and non small cellCatheter is plugged into, it is characterized in that, 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.
3. the pull positive-pressure type medical infusion joint that according to claim 2 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.
4. the pull positive-pressure type medical infusion joint 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 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.
5. pull positive-pressure type medical infusion joint of plugging into non small cellCatheter according to claim 4, is characterized in that, transverse groove has gradient, but oblique angle is less than Self-locking angle.
6. the pull positive-pressure type medical infusion joint that according to claim 1 and non small cellCatheter is plugged into, it is characterized in that, the fittings body inner chamber is communicated with the Connection Block inner chamber by a kind of stop valve, and this stop valve is arranged on 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.
7. the pull positive-pressure type medical infusion joint that according to claim 6 and non small cellCatheter is plugged into, 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.
8. the pull positive-pressure type medical infusion joint that according to claim 7 and non small cellCatheter is plugged into, 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.
9. the pull positive-pressure type medical infusion joint that according to claim 7 and non small cellCatheter is plugged into, 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.
10. the pull positive-pressure type medical infusion joint that according to claim 7 and non small cellCatheter is plugged into, 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 201320263467 CN203342118U (en) | 2013-05-15 | 2013-05-15 | Pull positive pressure type medical infusion adapter which is connected with extracorporal indwelling catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320263467 CN203342118U (en) | 2013-05-15 | 2013-05-15 | Pull positive pressure type medical infusion adapter which is connected with extracorporal indwelling catheter |
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| Publication Number | Publication Date |
|---|---|
| CN203342118U true CN203342118U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320263467 Withdrawn - After Issue CN203342118U (en) | 2013-05-15 | 2013-05-15 | Pull positive pressure type medical infusion adapter which is connected with extracorporal indwelling catheter |
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| CN (1) | CN203342118U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103751878A (en) * | 2014-01-27 | 2014-04-30 | 王亚娟 | Positive-pressure and non-needle connecting piece |
| 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 |
| 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 |
| WO2015017961A1 (en) * | 2013-08-03 | 2015-02-12 | Zhang Jianming | Medical infusion joint having cut-off valve |
| CN108837224A (en) * | 2018-07-16 | 2018-11-20 | 杭州光启医疗科技发展有限公司 | The medical fluid delivery instrument of anti-backflow |
-
2013
- 2013-05-15 CN CN 201320263467 patent/CN203342118U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN105163773A (en) * | 2013-05-15 | 2015-12-16 | 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 |
| CN105163773B (en) * | 2013-05-15 | 2018-05-04 | 福建省百仕韦医用高分子股份有限公司 | The pull positive-pressure type medical infusion connector plugged into non small cellCatheter |
| WO2015017961A1 (en) * | 2013-08-03 | 2015-02-12 | Zhang Jianming | Medical infusion joint having cut-off valve |
| CN103751878A (en) * | 2014-01-27 | 2014-04-30 | 王亚娟 | Positive-pressure and non-needle connecting piece |
| CN103751878B (en) * | 2014-01-27 | 2016-03-16 | 王亚娟 | Positive pressure needle-free connector |
| CN108837224A (en) * | 2018-07-16 | 2018-11-20 | 杭州光启医疗科技发展有限公司 | The medical fluid delivery instrument of anti-backflow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131218 Effective date of abandoning: 20180504 |