CN1031690C - All-closed vein infusion apparatus - Google Patents
All-closed vein infusion apparatus Download PDFInfo
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- CN1031690C CN1031690C CN 91100428 CN91100428A CN1031690C CN 1031690 C CN1031690 C CN 1031690C CN 91100428 CN91100428 CN 91100428 CN 91100428 A CN91100428 A CN 91100428A CN 1031690 C CN1031690 C CN 1031690C
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- needle seat
- soft
- hard
- sealing cap
- soft needle
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Abstract
The present invention relates to a novel totally enclosed vein transfusion appliance composed of a soft needle, a soft needle seat, a sealing cap, a hard needle, a hard needle seat, a transfusion hose, a clamping plate type switch, a joint, etc. Compared with the existing transfusion appliance, the present invention has the advantages of convenient operation, high safety, low cost and simple manufacturing technology and structure.
Description
The present invention relates to a kind of by thrusting the device of vein with medical medium input human body, particularly a kind of totally-enclosed venous transfusion device.
The most of draw point that uses a kind of similar injection of the transfusion needle that China uses now, several years ago abroad this is improved, adopt draw point overcoat the preceding paragraph plastic tube, needle stand is arranged on the pipe, can extract draw point after thrusting vein, and plastic flexible pipe is stayed in the blood vessel, may puncture blood vessel wall by secondary to avoid human body syringe needle when the activity.The needle stand of this pin can shutoff in addition.Repeatedly transfusion as long as take away shutoff, is inserted plug and can be infused.Still be that the medical worker has all given great convenience no matter to patient.But this pin also has shortcoming, promptly thrust blood vessel after, pulling out draw point and do not inserting as yet in a period of time of joint, afterbody is open, this gives infection, gas embolism and the hemorrhage probability of having made.
On this basis, the someone has proposed to improve design.Chinese patent application CN87101090.9 document discloses a kind of bypass closed soft infusion needle of vein (see figure 1).This design changes soft needle seat into Y shape, two inputs are promptly arranged, an outfan, one of them input and soft pin lead directly to, draw point is penetrated from this straight-through input, the afterbody of this draw point is blind, and the side has an aperture to aim at another input of Y shape soft needle seat, uses for observing blood back.And, this access bore is taper, put a rubber stopper that is close to the needle stand inwall in the input end interface with the straight-through tube for transfusion of outside cone joint insertion identical with endoporus, draw point stung rubber stopper and stung soft pin inner chamber again and stretch out from soft needle portion, and this needle stand has the synthetic of cone that a truncated cone and one extends by this truncated cone bottom, just rubber stopper is arranged on the garden cylinder of cone the inside, this conical surface cooperates usefulness in order to do with the draw point seat, and such design has realized there is not the open problem of afterbody after the puncture basically.
But there is obvious defects in the technical solution of this invention, is in particular in:
1. metal needle and soft needle seat are circle, and like this, the side opening of metal needle and the hole of input channel align and just exist difficulty.
2. the diameter of soft pin is thinner, one diameter is used 0.8mm always---1.2mm's, penetrate draw point in it generally at 0.5mm---about 0.9mm, the endoporus of draw point is only at 0.3mm---about 0.7mm, on a thin like this steel pipe, do just difficulty comparatively of a side opening, the afterbody of draw point is blind still more, this is more difficult realization on technology, and this pin is not only thin but also long, and its root is the position of stressed maximum when puncture, do a hole at this, certainly will weaken the intensity of pin greatly.
3. after rubber stopper is packed into, through this plug intravenous injection the time, require the medical worker to thrust rubber stopper again through the inner chamber of soft pin with entry needle, this is extremely difficult the realization.Because, because stopping of rubber stopper, the medical worker can't see the inner chamber of soft pin, so, thorn is difficult to thrust exactly soft pin inner chamber, if then may puncture soft needle tubing wall partially, as causing rubber grain to come off entering human body with liquid stream, cause thromboembolism or cause heating because of stinging the inaccurate time rubber stopper of repeatedly wearing.
4. the surface that cooperates with the needle stand of metallic hard pin is a conical surface, after hard pin is extracted, although the inventor proposes to remove to block this taper hole with the shutoff of hard hub, clinically, still need sterilize when injecting, because all be regarded as contaminated with any surface that air directly contacts next time.Because rubber stopper is in Taper Pipe, this just exists and is difficult for the disinfectant dead angle, and sterilization thoroughly is not definitely unallowed in clinical use.
5. infusion channel adopts the taper hole plug-in type to engage, and this is to unconsciousness or restless patient and improper, because throw off the restless junction that causes of patient.In fact need a kind of both easy connection easily to unplug the structure that is connected firmly again.
6. a valve is arranged on the infusion channel, and this valve is made on the very thin Taper Pipe, also is difficult for realizing.And only say that a two-port valve door is arranged herein, the concrete structure of this valve is not seen detailed description.
The objective of the invention is to overcome the shortcoming that exists in the above-mentioned prior art, provide a kind of simple in structure, safe in utilization, easy to operate novel bypass type totally-enclosed venous transfusion device.
The object of the present invention is achieved like this: a kind of venous transfusion device, it comprises: soft pin, T shape soft needle seat sealing cap, circle collar, hard pin, hard hub, infusion tube, clamp plate type switch, joint.One transparent cavity is arranged in the middle of the described T shape soft needle seat, and sealing cap closely inserts from the straight-through endoporus of soft needle seat, also is enclosed within the outer surface of soft needle seat simultaneously, by the circle collar sealing cap is firmly fixed.Another input channel of T shape soft needle seat is connected with infusion tube, clamp plate type switch of cover on infusion tube, and the other end of infusion tube connects a joint.Described hard pin also has a hard hub of being made by transparent material, in order to observe the blood back situation, the afterbody Feng Youyi of hard pin by make ventilative of filtering material but the saturating pad of liquid, the front end of hard hub is a sleeve that has breach, its endoporus and soft needle seat have good matching relationship, to be needled into sealing cap firmly, and expose the front end cutting edge by soft pin inner chamber, the inner plane of hard hub transparent sleeve and the end face of sealing cap develop.Described hard pin leads directly to, and makes one with hard hub.
All-closed vein infusion apparatus of the present invention is compared with foregoing bypass closed soft infusion needle of vein, and except all advantages with latter, also have following advantage: (1) is rational in infrastructure, safe in utilization, and manufacturing process is simple, and is with low cost.(2) metallic hard pin intensity height is simple in structure, safe and reliable.(3) medical worker behaviour does easyly, rapid, will not occur because of misalignment soft pin repeated localised puncture sealing cap or punctures the situation of hose wall.(4) the infusion tube employing is bonding, and the connected mode of each seam adopts and is threaded, and is connected firmly, and unconsciousness or restless patient are perfectly safe.(5) be easy to sterilization, when carrying out intravenous injection, do not have the sterilization dead angle.
Below in conjunction with accompanying drawing most preferred embodiment of the present invention is elaborated:
Fig. 1 is the structural representation of the bypass closed soft infusion needle of vein of prior art.
Fig. 2 is the structural representation of all-closed vein infusion apparatus of the present invention.
Fig. 3 is the local enlarged diagram at A shown in Figure 2 place.
The structural representation of the porose outside cone joint when Fig. 4 is transfusion.
Fig. 5 is the structural representation of atresia outside cone joint when not infusing.
Referring to Fig. 2, label 20 expressions all-closed vein infusion apparatus of the present invention, it has the transfusion soft needle seat 6 of a T shape, a sealing cap 5 is inserted in back at soft needle seat 6, a small circle ring is arranged in the outside of sealing cap 5, i.e. circle collar 4, it is fixed together sealing cap 5 and soft needle seat 6.Like this, at transparent cavity 15 of intermediate formation of soft needle seat 6, the hard pin position that pushes in order to observation.Outer surface at sealing cap has a small circle ring labelling 17, with the position of indicating hard pin 3 to thrust.Sealing cap 5 has a sleeve, and telescopic endoporus is a bit larger tham the external diameter of hard pin, and telescopic external diameter should insert in the endoporus of soft needle seat tightly.
Referring to Fig. 3 and Fig. 4, another input channel of T shape soft needle seat 6 and one section infusion tube 9 are bonding, the other end of infusion tube 9 and the joint 11 with external screw thread internal taper hole are bonding, and the joint 12 or 14 that matches with joint 11 has the corresponding conical surface, are equipped with a nut 13 in addition.Nut 13 is inserted in a porose outside cone joint 12, then flexible pipe and porose outside cone joint 12 is cemented, and flexible pipe herein is the outfan of transfusion system.During transfusion, porose outside cone joint 12 is inserted in the external screw thread internal taper hole joint 11, and screw nut 13.When not infusing, the nut 13 of outwarding winding is extracted joint 12, inserts atresia tapered joint head 14 then, and screws nut 13.To make the structure of one be different to common nut conehead in this structure and the prior art, and it has solved and has been difficult for realizing concentric because of making circular cone and nut, and causes that shutoff does not sternly cause the problem of leakage.
On infusion tube 9, be with a clamp plate type switch 10, have a key hole shape card seam as shown in Figure 2 on the clamp, flexible pipe 9 is pushed the card seam, can reach the purpose that stops to infuse, flexible pipe is back into the circular hole place can continue transfusion again.
Referring to Fig. 3, the present invention has also given attention in soft pin and being connected of soft needle seat, and the tail end inside of soft pin 8 is embedded with the fastening tubule 7 of a bit of metal, will embed the corresponding site that fastening tubule 7 brute forces of metal push soft needle seat 6 then, be easy in the production realize, and connection is very firm.
The fastening tubule 7 of hard pin 3 of the present invention and soft Aculeata adopts the metal manufacturings, and remaining parts is made by the medical high polymer polymeric material, and particularly hard hub 2 and soft needle seat 6 are made by transparent material.
Novel full envelope venous transfusion device of the present invention in use, earlier the joint 11 of flexible pipe 9 and the hose coupling 12 of transfusion medicine bottle are connected, flow down along flexible pipe 9 Deng medicinal liquid, charge in the soft needle seat 6, utilize plate card type switch 10 to close the liquid road, select suitable blood vessel that hard pin 3 is thrust vein, observe hard hub 2 and see have blood back to flow out, being about to soft pin 8 pushes blood vessel and extracts hard pin 3, the pin mouth of rubber sealing cap 5 is sealed automatically, open plate cassette switch 10 messenger drug liquid stream are gone into vein then, with immobilization with adhesive tape soft needle seat 6.When carrying out vein when pushing away, as long as sealing cap 5 is carried out disinfection, as human body skin is carried out disinfection.Do not deposit the dead angle because of sealing cap exposes, be easy to sterilization, an areola 15 is arranged in the sealing cap, one small circle ring labelling 17 is arranged outward, by circular ring marks entry needle is thrust rubber during injection, can see position into pin from transparent needle stand 6, needn't thrust soft pin inner chamber, be easy to realize injecting.
Claims (9)
1 one kinds of all-closed vein infusion apparatus, it comprises: soft pin, soft needle seat, sealing cap, hard pin, hard hub, infusion tube, clamp plate type switch and joint, it is characterized in that: described soft needle seat is shaped as T shape, a transparent cavity is arranged in the middle of the T shape soft needle seat, sealing cap closely inserts from the straight-through endoporus in soft needle seat back, and it also is enclosed within on the outer surface of soft needle seat simultaneously, has one on the end face of described sealing cap in order to indicate the small circle ring that is needled into the position firmly; The outside of sealing cap is with a circle collar, and sealing cap and the firm circle of soft needle seat is tight; Another infusion channel of said T shape soft needle seat is connected with an infusion tube, on infusion tube, be with a clamp plate type switch, the other end of infusion tube connects a joint, described hard pin leads directly to, and make one with hard hub, described hard hub is transparent, can observe the blood back situation, the afterbody of hard hub envelope has by make ventilative of filtering material but liquid-tight pad, the front end of hard hub is a sleeve that has breach, its endoporus and soft needle seat have good matching relationship, will be needled into sealing cap firmly and expose the front end cutting edge by soft pin inner chamber, and develop the inner plane of hard hub transparent sleeve and the outer face of sealing cap.
2 totally-enclosed venous transfusion devices according to claim 1, it is characterized in that: described sealing cap has a sleeve, and telescopic endoporus is a bit larger tham the external diameter of hard pin, and telescopic external diameter inserts in the endoporus of soft needle seat tightly.
3 a kind of totally-enclosed venous transfusion devices according to claim 1, its characteristics are: described hard hub front end has a sleeve that has a breach, breach on it is another infuse end and the setting that is used to pass T shape soft needle seat, this telescopic inner surface can be the face of cylinder, also can be the conical surface.
4 a kind of totally-enclosed venous transfusion devices according to claim 1, it is characterized in that: the other end of described infusion tube and the joint with external screw thread internal taper hole are bonding, and what match with this joint is a porose outside cone joint and cover nut thereon.
5 a kind of totally-enclosed venous transfusion devices according to claim 4 is characterized in that: what match with the joint of described external screw thread internal taper hole is an atresia outside cone joint and cover nut thereon.
6 a kind of totally-enclosed venous transfusion devices according to claim 1 is characterized in that: described soft pin adopts the fastening tubule 7 of rigidity to compress the two with combining of soft needle seat.
7 a kind of totally-enclosed venous transfusion devices according to claim 1 is characterized in that: described clamp plate type switch has the card seam of a key hole shape, and this clamp plate type switch is enclosed within on the infusion tube, is used for decontroling or flattening infusion tube.
8 a kind of totally-enclosed venous transfusion devices according to claim 1, it is characterized in that: described hard pin and fastening tubule are made with metal material.
9 a kind of totally-enclosed venous transfusion devices according to claim 1, it is characterized in that: parts such as described soft pin, soft needle seat, infusion tube, hard hub, sealing cap and joint are by the manufacturing of medical high polymer polymeric material, and wherein said soft needle seat and hard hub adopt transparent material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91100428 CN1031690C (en) | 1991-01-28 | 1991-01-28 | All-closed vein infusion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91100428 CN1031690C (en) | 1991-01-28 | 1991-01-28 | All-closed vein infusion apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1063618A CN1063618A (en) | 1992-08-19 |
| CN1031690C true CN1031690C (en) | 1996-05-01 |
Family
ID=4904623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91100428 Expired - Fee Related CN1031690C (en) | 1991-01-28 | 1991-01-28 | All-closed vein infusion apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1031690C (en) |
-
1991
- 1991-01-28 CN CN 91100428 patent/CN1031690C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1063618A (en) | 1992-08-19 |
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| CF01 | Termination of patent right due to non-payment of annual fee |