CN100551453C

CN100551453C - Remain-type infusion device

Info

Publication number: CN100551453C
Application number: CNB2006100336821A
Authority: CN
Inventors: 蒋屏山; 姜小波
Original assignee: FOSHAN SPECIAL MEDCIAL Co Ltd
Current assignee: FOSHAN SPECIAL MEDCIAL Co Ltd
Priority date: 2006-02-20
Filing date: 2006-02-20
Publication date: 2009-10-21
Anticipated expiration: 2026-02-20
Also published as: CN101024101A

Abstract

The invention discloses a kind of remain-type infusion device, comprise that one first dredges pipe, and is provided with and flows into end and dredge pipe with the no needle adapter, one second of outflow end, second dredges pipe removably is incorporated into the outflow end of no needle adapter and makes the second outflow end internal communication of dredging the Guan Yuwu needle adapter, it is characterized in that remain-type infusion device comprises that further one removably connects first and dredges the inflow end of Guan Yuwu needle adapter and make first to dredge the adaptor of the inflow end internal communication of Guan Yuwu needle adapter.

Description

Remain-type infusion device

Technical field

The invention relates to a kind of medical infusion device, particularly about the nonexpondable remain-type infusion device of a kind of one-time puncture.

Background technology

In the disease treatment process, for critical sufferer often will be in succession several days even tens of days intermittently inject various medicines for it, if vascular puncture is again all carried out in per injection, will bring extra suffering of flesh to sufferer, and repeatedly puncture has brought trouble also for nurse's work.

Therefore, medical personnel begin to attempt needle end is retained in the sufferer blood vessel in practice, and the other end adopts the method for stopping up to prevent that blood from refluxing and bacterial invasion.As a kind of medical intravenous injection needle that Chinese patent application discloses for CN92242107.2 number, be applicable to and repeatedly intravenous patient use.It imports syringe needle, flexible pipe and adapter by metal is formed, and metal imports syringe needle and inserts in the flexible pipe, and its parts of plastics is connected with the head of adapter, and the afterbody of adapter has a rubber.But this retained transfusion method exists huge drawback: at first, adopt this method generally all the blood backflow phenomenon can be arranged, will stop up syringe needle behind the blood coagulation, therefore must add expensive anticoagulant-heparin sodium; Simultaneously, tend to produce rubber scraps when syringe needle passes rubber, and these chips can flow in the blood of human body, thereby bring beyond thought consequence; And the sealing effectiveness of this method is unsatisfactory, tends to cause the pathogenic bacteria invasion, thereby causes bigger injury to sufferer.

A kind of calparine cap has appearred in the continuous improvement along with armarium.Calparine cap is for there being needle adapter, and why being called has needle adapter, is because it need could be infused with the sealing silica gel that injection needle pierces through on the calparine cap when transfusion.A kind of calparine cap of being furnished with rotatable female thread collar as CN03220931.2 number announcement of Chinese patent application, this calparine cap is connected to form by female thread collar and Rule outer cone body, female thread collar rear wall is provided with connecting hole, Rule outer cone rear body is provided with the protruding circle of slightly larger in diameter in connecting hole, and protruding circle rear portion forms link slot; When rotation female thread collar made calparine cap be connected with other medical apparatus and instruments, Rule outer cone body can not produce transfer, thus can avoid having inserted lancet device in the outer cone body of Rule comes off and lancet device after connect the phenomenon that the conduit generation is twisted together.Though calparine cap connects simply, sealing is reliable,, calparine cap exists following shortcoming: 1, can not be used for all patients.Some patient is because the problem of clotting mechanism own can not be used heparin sodium, so these patients just can not use calparine cap; 2, since needle pierces sealing silica gel, make microorganism and microgranule have an opportunity to enter infusion channel, and the patient damaged; 3, increased the cost of transfusion,, just increased unwanted cost owing to need to inject the heparin sodium tube sealing after each transfusion with syringe; 4, can damage to medical personnel, the disease of blood cross infection easily by needle sting, especially may take place in medical personnel when the puncture silicagel pad, will be more serious to medical personnel's the injury that causes.

Because calparine cap has above-mentioned shortcoming, so industry has been developed a kind of no needle adapter, its operation principle is: 1, when initial condition, infusion channel is in sealing, and detent position is the whole tapered channel in the upper end of joint; 2, syringe inserts when transfusion, and the compressing stem stem moves down, and abdicates infusion channel, and medicinal liquid flows into liquid-transport pipe-line through passage; 3, after transfusion was finished, syringe was transferred to, and stem stem moves under the effect of flexible member, on when moving stem stem at first seal tapered channel, move in the continuation along with stem stem, unnecessary medicinal liquid is continued to press toward liquid-transport pipe-line in the joint, the state before getting back to transfusion; 4, along with the end of transfusion, the pressure in the tube for transfusion descends gradually, and final and venous pressure reaches balance, and becomes a water droplet at the remaining needle capitiform.A kind of multiple times feeding and needleless safety injector as CN96101068.1 number announcement of Chinese patent application, it has main body, stretches side arm and elastic valve, stretch the side that side arm is connected in main body, valve body is arranged at the opening of main body and against stretching the tubulose injection orifice of side arm with sealing one end.When the patient injection medicinal liquid, needleless injector is inserted in the bellmouth that stretches body, its valve pipe is fitted in the fluid passage of syringe.The pressure that the protruding end of syringe acts on valve body makes elastic valve body be in compression position, allows medicinal liquid to enter the carrier pipe of main body.When no pressure, elastic valve body is in resting position, closing injection canal, thereby does not have the thromboembolism that the air admission carrier pipe causes patient's blood vessel.No needle adapter has the following advantages: 1, come tube sealing without injecting heparin sodium, therefore can adapt to all patients.2, owing to being harmless sealing, so there is not the possibility of microorganism and particle contamination.3, sterilization is convenient, only needs before each transfusion with disinfectant the upper end of joint wiping to be got final product.4 just because of need not inject expensive heparin sodium, so reduced the transfusion cost.5, medical personnel do not need the syringe needle puncture, have avoided the injury to medical personnel.6, the upper end of joint is furnished with standard external, and it is more firm that transfusion is connected.

Do not have lot of advantages and be worthy of popularization though there is needle adapter,, the structure of the transfusion device of domestic standard can not carry out reliable and stable linking to each other with the structure of no needle adapter at present.And what need retained transfusion generally all is critical sufferer, in case sufferer this unsettled connection is ripped in unconscious, so with the life of serious critical sufferer.That is to say the occasion that directly applies to retained transfusion that no needle adapter can't be reliable and stable.

Therefore, provide a kind of device that carries out retained transfusion that can be reliable and stable to become the problem that industry need solve.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of remain-type infusion device that can reliablely and stablely use no needle adapter.

A kind of technical scheme of the present invention is: a kind of adaptor that is used for remain-type infusion device is provided, removably connect and first outflow end of dredging the Guan Yuwu needle adapter is communicated with in order to first of infusion set is dredged the Guan Yuwu needle adapter, first dredges pipe comprises one first location division, no needle adapter comprises one second location division, and this adaptor is provided with corresponding with first location division and second location division respectively one first fixedly connected holding parts and one second holding parts.

Wherein, second location division is with after second holding parts is fixedlyed connected, and first holding parts is dredged the terminal distance of pipe to the planar vertical dimension in critical enable possition of the spool of no needle adapter smaller or equal to first location division to the first.After the elastic force that first end of dredging pipe overcomes the spool of no needle adapter is inserted the critical enable possition of the inflow end of no needle adapter and arrival spool, first location division moves to the first holding parts lower end, and first holding parts, resistance that first location division is applied is greater than the elastic restoring force of spool.

Being connected between first location division and first holding parts be adopt that buckle-type cooperates, spiral cooperation or interference type cooperate, being connected between second location division and second holding parts be adopt that buckle-type cooperates, spiral cooperation or interference type cooperate, between first location division and first holding parts, can adopt identical fit system or different fit systems between second location division and second holding parts.Wherein, block cooperates block or the like the mode of block, salient point and the end face of block, step and the end face comprise fin and end face; Be clasped and comprise that projection cooperates with groove, grab cooperates with the hole, buckle hoop and cooperating of locating surface or the like mode; Interference fit can comprise optical axis and unthreaded hole interference fit, be provided with the interference fit that increases the frictional force structure or the like mode.

Preferred mode is: adaptor is a hollow housing, comprise two parts up and down, the interior diameter of the first half slightly equals the overall diameter of first location division, the interior diameter of the latter half slightly equals not have the overall diameter of the inflow end of needle adapter, first holding parts is the block fin that is provided with on the first half inner walls, second holding parts is the female thread that is provided with on the latter half inner walls, first upper surface of dredging first location division of pipe can be by the lower surface block of block fin, and second location division of no needle adapter is to be arranged on no needle adapter to flow into the peripheral external screw thread that can cooperatively interact and be connected with female thread of end.First dredges the pipe end is provided with an injection catheter, no needle adapter also comprises a sealing, and it flows into the spool of end and outflow end, to oppress spool after elastic force that injection catheter overcomes spool under external force insert to flow into end produces displacement and makes and flow into end and outflow end conducting, when removing external force, the upper surface of medicine filter is by the lower surface block of block fin, the elastic restoring force of spool can not overcome this block power, thereby the inflow end and the outflow end of first injection catheter of dredging pipe and no needle adapter remain on the state that is interconnected.

Wherein, the first half of adaptor is offered at least one vertical breach, is convenient to sterilization, connects and removes connect.Preferred mode is to go to both sides in the symmetric substantially sanction in both sides of the first half of adaptor.

Another kind of technical scheme of the present invention is: a kind of remain-type infusion device is provided, comprise that one first dredges pipe, and is provided with and flows into end and dredge pipe with the no needle adapter, one second of outflow end, second dredges pipe removably is incorporated into the outflow end of no needle adapter and makes the second outflow end internal communication of dredging the Guan Yuwu needle adapter, it is characterized in that remain-type infusion device comprises that further one removably connects first and dredges the inflow end of Guan Yuwu needle adapter and make first to dredge the adaptor of the inflow end internal communication of Guan Yuwu needle adapter.

Wherein, first dredges pipe comprises one first location division, no needle adapter comprises one second location division, adaptor comprises corresponding with first location division and second location division respectively one first fixedly connected holding parts and one second holding parts, being connected between first location division and first holding parts be adopt that buckle-type cooperates, spiral cooperation or interference type cooperate, being connected between second location division and second holding parts be adopt that buckle-type cooperates, spiral cooperation or interference type cooperation.

Optimal way is, adaptor is a hollow housing, comprises two parts up and down, and the interior diameter of the first half slightly equals the overall diameter of medicine filter, and the interior diameter of the latter half slightly equals not have the overall diameter of the inflow end of needle adapter.Supravasal medicine filter is dredged for being arranged on first in first location division, second location division is to be arranged on the external screw thread that no needle adapter flows into the end periphery, first holding parts is the block fin that is provided with on the adaptor inner walls, second holding parts is the female thread that is provided with on the adaptor inner walls, first upper surface of dredging the medicine filter of pipe can be by the lower surface block of block fin, and the external screw thread of no needle adapter can interconnect with the female thread of adaptor.

After external screw thread and female thread screw, adaptor is connected and fixed with no needle adapter, when injection catheter is oppressed spool insertion inflow end under external force, strain takes place in medicine filter gradually and between the block fin of the inwall of first holding parts, first holding parts is expanded to the periphery, move to the block fin below of the first holding parts inwall of adaptor up to medicine filter upper surface, and injection catheter is communicated with the inflow end and the outflow end of no needle adapter, this moment, the first holding parts elastic return was drawn close to the center, thereby medicine filter upper surface is by the lower surface block of the block fin of the first holding parts inwall, after stopping external force, the elastic force of spool then can not overcome the resistance messenger drug filter of block fin and cross this block fin, thereby injection catheter is maintained at and inflow end that does not have needle adapter and state that outflow end is communicated with.

When applying external force and extract injection catheter, external force can overcome the resistance messenger drug filter of block fin and cross this block fin, thereby injection catheter withdraws from from the inflow end of no needle adapter gradually, and the spool correspondence will revert to and will flow into end and the state that outflow end stops up, and then not have needle adapter and extraneous sealing.

Yet first location division can also be other the structure of special setting beyond the medicine filter.Be arranged on first such as one and dredge supravasal locating piece, and locating piece can be that circle, polygon, wedge shape, sphere and other are irregularly shaped, thereby the inner chamber of the first half of adaptor also correspondence is arranged to corresponding shape.

First connection, second connection of dredging the outflow end of Guan Yuwu needle adapter of dredging the inflow end of Guan Yuwu needle adapter is and is tightly connected.

The invention has the beneficial effects as follows: provide an adaptor effectively between no needle adapter and standard transfusion device, to set up reliable and stable being connected, thereby comparatively advanced no needle adapter can be more widely used, simultaneously, the risk that above-mentioned adaptor has effectively avoided no needle adapter and transfusion device to come off has ensured the life and health of sufferer.

Below in conjunction with embodiment, further specify the present invention, but the present invention is not limited to these embodiment, any on essence spirit of the present invention improvement or substitute, still belong to scope required for protection in claims of the present invention.

Description of drawings

The present invention is further illustrated below in conjunction with drawings and Examples:

Fig. 1 is the structural representation of remain-type infusion device of the present invention.

Fig. 2 is the sectional structure sketch map of adaptor of the present invention.

Fig. 3 is the sectional structure sketch map of the other direction of adaptor of the present invention.

Fig. 4 is the structural representation before no needle adapter uses.

Fig. 5 is the structural representation during no needle adapter uses.

Fig. 6 is the structural representation after no needle adapter uses.

The specific embodiment

Embodiment 1

Please refer to Fig. 1, remain-type infusion device of the present invention is used in the transfusion occasion of one-time puncture multiple injection, and this remain-type infusion device comprises that one first dredges pipe 10, one adaptor, 30, one no needle adapter 50 and one second and dredges and manage 70.

First dredges pipe 10 for medical liquid container arrives one section conduit between the no needle adapter 50, comprises the transfusion device element of some standards, such as the injection catheter 14 of dropper, medicine filter 12, hard etc.

Second dredges pipe 70 comprises from no needle adapter 50 and to comprise the transfusion device element of some standards, such as inlying catheter 72, scalp acupuncture 74 etc. to one section conduit the patient vessel.

Please refer to Fig. 4 to Fig. 6, no needle adapter 50 comprises and flows into end 52, outflow end 54 and be located at wherein spool 56, wherein flows into end 52 outer peripheral faces and is provided with external screw thread 522, and outflow end 54 and second is dredged the front end of managing 70 inlying catheter 72 and detachably fixedlyed connected.

The operation principle of no needle adapter 50 is: when initial condition (shown in Figure 4), the infusion channel that flows between end 52, the outflow end 54 is sealed by spool 56; Injection catheter 14 inserts and flows in the end 52 when infusing, and compressing spool 56 moves down, and abdicates infusion channel, thereby injection catheter 14, inflow end 52 and outflow end 54 internal liquids are communicated with (shown in Figure 5); After transfusion was finished, injection catheter 14 was transferred to, and spool 56 moves under the effect of flexible member 58, on spool 56 closed channel at first when moving, move in the continuation along with spool 56, unnecessary medicinal liquids are continued to press past outflow end 54 (shown in Figure 6) in the no needle adapter 50.

Please refer to Fig. 2, adaptor 30 is a up big and down small ladder barrel shape hollow housing, the dividing plate that comprises the first half 32, the latter half 34 and offer the through hole 36 that passes for injection catheter 14, wherein the interior diameter of the first half 32 slightly equals the overall diameter of medicine filter 12, the interior diameter of the latter half 34 slightly equals to flow into the overall diameter of end 52, wherein the first half 32 inwalls convex with block fin 322, and the latter half 34 inwalls are provided with female thread 344.Wherein, after this first medicine filter 12 of dredging pipe 10 inserted the inner chamber of this first half 32, medicine filter 12 upper surfaces can be by the lower surface block of this block fin 322; The external screw thread 522 of the inflow end 52 of no needle adapter 50 can screw mutually with the female thread 344 of the latter half 34 of adaptor 30 and be connected.And, after external screw thread 522 and female thread 344 screwed fully, the vertical dimension of (flow in this position end 52 begin to be communicated with outflow end 54) arrived the distance of injection catheter 14 ends smaller or equal to described medicine filter 12 upper surfaces to the plane, critical enable possition of spool 56 in block fin 322 lower surfaces.

For the ease of sterilization and plug, the first half 32 of adaptor 30 offers at least one breach, and preferred mode is vertically to cut out respectively on the lateral symmetry ground of the first half 32 to go a part.

During start injection, this external screw thread 522 is screwed fully with female thread 344, make this adaptor 30 and no needle adapter 50 stable being connected and fixed, oppress this spool 56 under external force when injection catheter 14 and insert these inflow when holding 52, strain takes place in this medicine filter 12 gradually and between the block fin 322 of the first half 32 inwalls of adaptor 30, and the first half 32 is expanded laterally, move to this block fin 322 belows up to the upper surface of this medicine filter 12, this moment, the first half 32 elastic return were drawn close to the center, thereby medicine filter 12 upper surfaces are by the lower surface block of block fin 322, after stopping to apply external force, the elastic restoring force of spool 56 then can not overcome the resistance messenger drug filter 12 of this block fin 322 and cross this block fin 322.After screwing fully because of external screw thread 522 and female thread 344 again, the distance of injection catheter 14 ends is arrived in block fin 322 lower surfaces smaller or equal to described medicine filter 12 upper surfaces to the planar vertical dimension in critical enable possition of spool 56, so, spool 56 will be depressed into the enable possition by injection catheter 14 this moment, thus injection catheter 14 and the inflow end 52 of no needle adapter and the state that outflow end 54 remains on fluid connection.

After injection finishes, apply external force and from the first half 32 inner chambers of adaptor 30, extract medicine filter 12, external force can overcome the resistance of block fin 322 and the first half 32 is expanded laterally, thereby messenger drug filter 12 is crossed this block fin 322, injection catheter 14 withdraws from the inflow end 52 of no needle adapter 50 gradually simultaneously, 56 of spools stop up at the passage that will flow into gradually under the effect of the elastic restoring force of flexible member 58 between end and the outflow end accordingly, will not have needle adapter 50 at last and seal with extraneous.

Embodiment 2

As another embodiment of the invention, this first is dredged pipe and 10 comprises one first location division, this no needle adapter 50 comprises one second location division, and this adaptor 30 comprises corresponding with first location division and second location division respectively one first fixedly connected holding parts and one second holding parts.

Wherein, first location division can be other the structure of special setting beyond the medicine filter 12.Be arranged on first such as one and dredge the locating piece of pipe on 10, and locating piece can be that circle, polygon, wedge shape, sphere and other are irregularly shaped, thereby the inner chamber of the first half 32 of adaptor 30 also correspondence is arranged to corresponding shape.And the first half 32 of adaptor 30 can not offered breach.

Wherein, this first dredge being connected of pipe 10 and the inflow end 52 of no needle adapter 50, this second dredge manage 70 with being connected to be and being tightly connected of the outflow end 54 of no needle adapter 50.

Embodiment 3

As an embodiment more of the present invention, this first is dredged pipe and 10 comprises one first location division, this no needle adapter 50 comprises one second location division, and this adaptor 30 comprises corresponding with first location division and second location division respectively one first fixedly connected holding parts and one second holding parts.

Wherein, being connected between this first location division and first holding parts is to adopt that block cooperates, is clasped, spiral cooperates or interference fit, being connected between this second location division and second holding parts is that the employing block cooperates, is clasped, spiral cooperation or interference fit.Between first location division and first holding parts, can adopt identical fit system or different fit systems between second location division and second holding parts.

Dredge pipe 10 such as adaptor 30 and first and adopt threaded engagement, and the employing block cooperates or is clasped between adaptor 30 and the no needle adapter 50; Perhaps adaptor 30 and first is dredged pipe 10 and is not had and all adopt threaded engagement between the needle adapter 50.

Wherein, block cooperates except the block that comprises fin and end face, also comprises block or the like the mode of block, salient point and the end face of step and end face.

Wherein, be clasped and comprise that projection cooperates with groove, grab cooperates with the hole, buckle hoop and cooperating of locating surface or the like mode.

Wherein, interference fit can comprise optical axis and unthreaded hole interference fit, be provided with the interference fit that increases the frictional force structure or the like mode.

Claims

1, a kind of adaptor that is used for remain-type infusion device, removably connect and make the first outflow end internal communication of dredging the Guan Yuwu needle adapter in order to first of infusion set is dredged the Guan Yuwu needle adapter, described first dredges pipe comprises one first location division, described no needle adapter comprises one second location division, and described adaptor is provided with corresponding with first location division and second location division respectively one first fixedly connected holding parts and one second holding parts; It is characterized in that, described adaptor is a hollow housing, comprise two parts up and down, the interior diameter of the first half slightly equals the overall diameter of first location division, the interior diameter of the latter half slightly equals not have the overall diameter of the inflow end of needle adapter, described first holding parts is the block fin that is provided with on the first half inner walls, second holding parts is the female thread that is provided with on the latter half inner walls, described first upper surface of dredging first location division of pipe can be by the lower surface block of described block fin, and second location division of described no needle adapter is to be arranged on no needle adapter to flow into the external screw thread that can cooperatively interact and be connected with described female thread on the end periphery.

2, adaptor as claimed in claim 1, it is characterized in that, described second location division is with after second holding parts is fixedlyed connected, and described first holding parts is dredged pipe terminal distance smaller or equal to described first location division to described first to the planar vertical dimension in critical enable possition of the spool of described no needle adapter.

3, adaptor as claimed in claim 1, it is characterized in that, after the elastic force that described first end of dredging pipe overcomes the spool of described no needle adapter is inserted the inflow end of described no needle adapter and is arrived the critical enable possition of spool, described first location division moves to the first holding parts lower end, and described first holding parts resistance that first location division is applied is greater than the elastic restoring force of described spool.

4, a kind of remain-type infusion device, comprise that one first dredges pipe, and is provided with and flows into end and dredge pipe with the no needle adapter, one second of outflow end, described second dredges pipe removably is incorporated into the outflow end of no needle adapter and makes the second outflow end internal communication of dredging the Guan Yuwu needle adapter, it is characterized in that described remain-type infusion device comprises that further one removably connects described first and dredges the inflow end of Guan Yuwu needle adapter and make first to dredge the inflow end of Guan Yuwu needle adapter and the adaptor of outflow end internal communication; Described first dredges pipe comprises one first location division, and described no needle adapter comprises one second location division, and described adaptor comprises corresponding with first location division and second location division respectively one first fixedly connected holding parts and one second holding parts; Described adaptor is a hollow housing, comprises up and down two parts, and the interior diameter of the first half slightly equals the overall diameter of first location division, and the interior diameter of the latter half slightly equals not have the overall diameter of the inflow end of needle adapter; Supravasal medicine filter is dredged for being arranged on first in described first location division, described second location division is to be arranged on the external screw thread that described no needle adapter flows into the end periphery, described first holding parts is the block fin that is provided with on the adaptor inner walls, second holding parts is the female thread that is provided with on the adaptor inner walls, described first upper surface of dredging the medicine filter of pipe can be by the lower surface block of described block fin, and the external screw thread of described no needle adapter can interconnect with the female thread of described adaptor.

5, remain-type infusion device as claimed in claim 4 is characterized in that, the first half of described adaptor is offered at least one breach; Described second location division is with after second holding parts is fixedlyed connected, and described first holding parts is dredged pipe terminal distance smaller or equal to described first location division to described first to the planar vertical dimension in critical enable possition of the spool of described no needle adapter.

6, remain-type infusion device as claimed in claim 4, it is characterized in that, described first dredges the pipe end is provided with an injection catheter, described no needle adapter also comprises a sealing, and it flows into the spool of end and outflow end, to oppress described spool after elastic force that described injection catheter overcomes spool under external force inserts described inflow end produces displacement and makes described inflow end and outflow end conducting, when removing external force, the upper surface of described medicine filter is by the lower surface block of described block fin, the elastic restoring force of described spool can not overcome this block power, thereby the inflow end and the outflow end of described first injection catheter of dredging pipe and no needle adapter remain on the state that is interconnected.