CN2868321Y - Remaining needle transfusion system structure for preventing blood from back-flowing - Google Patents
Remaining needle transfusion system structure for preventing blood from back-flowing Download PDFInfo
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- CN2868321Y CN2868321Y CN 200620025110 CN200620025110U CN2868321Y CN 2868321 Y CN2868321 Y CN 2868321Y CN 200620025110 CN200620025110 CN 200620025110 CN 200620025110 U CN200620025110 U CN 200620025110U CN 2868321 Y CN2868321 Y CN 2868321Y
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- remaining needle
- shell
- feed tube
- tube
- lock nut
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Abstract
The utility model indwelling needle belongs to medical apparatus technology art, particularly relates to an indwelling needle infusion set structure that can prevent blood reflux. The utility model is characterized in that: the indwelling needle is connected to a small tube and a fastener is arranged on the small tube. On the other end of the small tube, a barotropic fluid tie-in is connected on the interface. A protection lock cap is connected to the top of the jacket of the barotropic fluid tie-in and an infusion tube is arranged on the top of the lock cap. And a three-division small tube interface can be connected to the other end of the infusion tube, so as to connect a plurality of medicine bottles. The blood reflux prevention indwelling needle infusion set structure is characterized in that: the structure is rational and operation is very simple. The structure replaces the commonly used clinical Heparin Cap, reduces the workload of health care workers and alleviates the cost of patients and suffering. The structure has the advantages of simple structure, beauty and reliable usage.
Description
Technical field
This utility model belongs to technical field of medical instruments, particularly relates to the remaining needle transfusion device structure that resistant to blood refluxes.
Background technology
Often run into patient's medicinal liquid of being totally lost clinically, when extracting syringe needle, remaining needle transfusion device internal pressure descends, and produces the phenomenon of blood back.Because of blood back very easily causes the syringe needle obstruction, present clinically often with the transfusion device structure of calparine cap, toward the interior heparin that injects 1 milliliter of patient's body, be the blood of propelling backflow, and prevent that blood coagulation from stopping up syringe needle.At present about preventing that the transfusion device that blood refluxes from having a lot of technical solutions, as the applying date: 2003.12.31, application number: 200320124229.3＜double plug resistant to blood backflow transfusion device〉as shown in Figure 1, double plug resistant to blood backflow transfusion device comprises: syringe needle 7, controller 11, transfusion house steward 8, transfusion arm 9 constitute, transfusion house steward 8 upper ends connect two transfusion arms 9, two transfusions are equipped with the rotating catch switch 10 that can close arm between the arm 9, and catch switch 10 fixedly mounts adjacent two transfusion arms 9 junctions by a rotating shaft.There is following shortcoming in the double plug resistant to blood backflow transfusion device of this structure: structure complicated, and attractive in appearance inadequately, poor reliability.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, the novel remaining needle transfusion device that the resistant to blood of good reliability again attractive in appearance refluxes.
For reaching the purpose of this utility model; it is to adopt following technical scheme: the remaining needle transfusion device structure that a kind of resistant to blood refluxes; comprise: remaining needle, pipe clamp, connection tubule, tubule interface, protection lock nut; it is characterized in that remaining needle connects tubule; pipe clamp is set on tubule; on the tubule interface of the tubule other end, connect the malleation liquid inlet joint; malleation liquid inlet joint shell upper end connects the protection lock nut; protection lock nut top is to connect tube for transfusion; the tube for transfusion other end can connect the tee T interface, so that connect multiple medicinal liquid bottle.
The remaining needle transfusion device structure that described resistant to blood refluxes is characterized in that the malleation liquid inlet joint is made of shell, two sealing rings, recess hole, elastomeric material, feed tubes.
The remaining needle transfusion device structure that described resistant to blood refluxes is characterized in that, the shell of malleation liquid inlet joint is to adopt plastic injection-moulded making, form thin inner chamber in the shell upper end, the lower end forms the broad inner chamber, and back-up ring, the hole of back-up ring and feed tube cylindrical pipe tight fit are formed on the bottom; Outer upper end at shell is provided with the upper end of joint external screw thread, and the protection lock nut of being convenient to be provided with female thread is mated connection.
The remaining needle transfusion device structure that described resistant to blood refluxes is characterized in that, small sealing ring, large sealing packing ring all are to adopt rubber injection mold to make; Little seal is enclosed within the feed tube upper end, when just reaching the effect that the sealed external air can not enter transfusion device at thin inner chamber place; Large sealing packing ring is enclosed within the thicker part position, lower end, recess hole of feed tube, and feed tube and outer casing inner wall sealing medicinal liquid can not be leaked, and air can not enter the effect in the malleation liquid inlet joint.
The remaining needle transfusion device structure that described resistant to blood refluxes is characterized in that, feed tube is that employing is plastic injection-moulded integrally formed, and the length of feed tube will be longer than the positive pressure connector shell and be got final product; Tiltedly protuberance is divided into sealing in the top.Cylinder top, lower end is provided with in two recess holes and the feed tube and communicates.Top, recess hole is set to live with shell and cooperates, and adding behind the small sealing ring is tight fit; Bottom, recess hole is set to live with shell and cooperates, and adding behind the large sealing packing ring is tight fit; Bottom at feed tube is set to cylindrical pipe, and its overall diameter is less than the diameter of large sealing packing ring position cylinder, so that block of spring, the back-up ring that an outer casing underpart is abutted against in the other end blocks.
The remaining needle transfusion device structure that described resistant to blood refluxes is characterized in that, the protection lock nut is to adopt plastic injection-moulded making, and the projection pipe is set in the protection lock nut, and the length of protruding pipe is exceeded can make small sealing ring be moved to the broad inner chamber; Protection lock nut top is to connect tube for transfusion, and the tube for transfusion other end can connect the tee T interface, so that connect multiple medicinal liquid bottle.
Effect of the present utility model: this structure has replaced calparine cap commonly used clinically, thereby has alleviated medical personnel's workload, has alleviated patient's expense and misery, and simple in structure, attractive in appearance, serviceability is reliable.
Description of drawings
Fig. 1 is the structural representation of the double plug resistant to blood backflow transfusion device of prior art.
Fig. 2 is the structural representation of the remaining needle transfusion device of resistant to blood backflow of the present utility model.
Fig. 3 is the malleation liquid inlet joint transfusion state sketch map not of the remaining needle transfusion device that refluxes of resistant to blood of the present utility model.
Fig. 4 is the malleation liquid inlet joint transfusion state sketch map of the remaining needle transfusion device of resistant to blood backflow of the present utility model.
Fig. 5 is that the malleation liquid inlet joint of the remaining needle transfusion device of resistant to blood backflow of the present utility model connects protection lock nut view.
The main symbol description of accompanying drawing:
1: malleation liquid inlet joint 2: the tubule interface
3: connect tubule 4: pipe clamp
5: remaining needle 12: small sealing ring
13: oblique convex portion 14: recess hole
15: large sealing packing ring 16: elastomeric material
17: shell 18: back-up ring
19: projection pipe 20: the protection lock nut
21: upper external screw thread 22: thin inner chamber
23: broad inner chamber 24: feed tube
25: tube for transfusion
Concrete making an excessive case more excessive is executed mode
Describe the remaining needle transfusion device structure that this utility model resistant to blood refluxes in detail below in conjunction with accompanying drawing, Fig. 2 is the remaining needle transfusion device structural representation that this utility model resistant to blood refluxes.Fig. 3 is the malleation liquid inlet joint transfusion state sketch map not of the remaining needle transfusion device that refluxes of this utility model resistant to blood.Fig. 4 is the remaining needle transfusion device malleation liquid inlet joint transfusion state sketch map that this utility model resistant to blood refluxes.Fig. 5 is that the remaining needle transfusion device malleation liquid inlet joint that this utility model resistant to blood refluxes connects protection lock nut view.
As shown in the figure, the remaining needle transfusion device of this utility model resistant to blood backflow comprises: remaining needle 5, pipe clamp 4, connection tubule 3, tubule interface 2, malleation liquid inlet joint 1 constitute.
Remaining needle 5 is commercially available prod of the prior art made by rustless steel and plastics, pipe clamp 4 is to adopt plastic injection-moulded making, connecting tubule 3 and tubule interface 2 is to adopt the medical plastic injection moulding to make, and malleation liquid inlet joint 1 is made of shell 17, small sealing ring 12, large sealing packing ring 15, elastomeric material 16, feed tube 24.
The shell 17 of malleation liquid inlet joint 1 is to adopt plastic injection-moulded making, and forms thin inner chamber 22 in shell 17 upper ends, and the lower end forms broad inner chamber 23, and back-up ring 18, the hole of back-up ring 18 and feed tube 24 cylindrical pipe tight fits are formed on the bottom; Outer upper end at shell 17 is provided with upper end of joint external screw thread 21, and the protection lock nut 20 of being convenient to be provided with female thread is mated connection;
The remaining needle transfusion device structure using method that this utility model resistant to blood refluxes: when needs add medicinal liquid; only need the negative screw socket of protection lock nut 20 and the positive screw socket of malleation liquid inlet joint 1 upper external screw thread 21 are tightened; protection lock nut projection pipe 19 in the protection lock nut 20 withstands the oblique convex portion 13 of malleation liquid inlet joint 1 upper end; to make small sealing ring 12 move on to broad inner chamber 23, thereby lose sealing effectiveness by thin inner chamber 22 positions.Advance medicinal liquid, medicinal liquid is passed through in two little recess holes 14 of feed tube 24 upper ends, flow in the feed tube 24, connect in the tubule 3 thereby flow to transfusion device again; After medicinal liquid is totally lost, turn on protection lock nut 20.At this moment, the spring 16 in the malleation liquid inlet joint 1 resets under the ordering about of its counteracting force gradually.
Simultaneously, large sealing packing ring 15 will be retained in the medicinal liquid in the positive pressure connector, continue by two little recess holes 14, it be pushed connect tubule 3.Small sealing ring 12 positions move on on gradually in thin inner chamber 22 positions, recover its sealing function.Two sealing rings effectively, were equivalent to the transfusion device liquid feeding end and were closed simultaneously this moment, had prevented that promptly the blood backflow from entering in remaining needle and the tubule.This structure has replaced calparine cap commonly used clinically, thereby has alleviated medical personnel's workload, has alleviated patient's expense and misery, and simple in structure, attractive in appearance, serviceability is reliable.
Claims (6)
1, a kind of remaining needle transfusion device structure of resistant to blood backflow; comprise: remaining needle, pipe clamp, connection tubule, tubule interface, protection lock nut; it is characterized in that remaining needle connects tubule; pipe clamp is set on tubule; connect the malleation liquid inlet joint on the tubule interface of the tubule other end, malleation liquid inlet joint shell upper end connects the protection lock nut, and protection lock nut top is to connect tube for transfusion; the tube for transfusion other end can connect the tee T interface, so that connect multiple medicinal liquid bottle.
2, the remaining needle transfusion device structure of resistant to blood backflow according to claim 1 is characterized in that the malleation liquid inlet joint is made of shell, two sealing rings, recess hole, elastomeric material, feed tubes.
3, the remaining needle transfusion device structure of resistant to blood backflow according to claim 1, it is characterized in that, the shell of malleation liquid inlet joint is to adopt plastic injection-moulded making, form thin inner chamber in the shell upper end, the lower end forms the broad inner chamber, back-up ring, the hole of back-up ring and feed tube cylindrical pipe tight fit are formed on the bottom; Outer upper end at shell is provided with the upper end of joint external screw thread, and the protection lock nut of being convenient to be provided with female thread is mated connection.
4, the remaining needle transfusion device structure of resistant to blood backflow according to claim 1 is characterized in that, small sealing ring, large sealing packing ring all are to adopt rubber injection mold to make; Little seal is enclosed within the feed tube upper end, when just reaching the effect that the sealed external air can not enter transfusion device at thin inner chamber place; Large sealing packing ring is enclosed within the thicker part position, lower end, recess hole of feed tube, and feed tube and outer casing inner wall sealing medicinal liquid can not be leaked, and air can not enter the effect in the malleation liquid inlet joint.
5, the remaining needle transfusion device structure of resistant to blood backflow according to claim 1 is characterized in that, feed tube is that employing is plastic injection-moulded integrally formed, and the length of feed tube will be longer than the positive pressure connector shell and be got final product; Tiltedly protuberance is divided into sealing in the top; Cylinder top, lower end is provided with in two recess holes and the feed tube and communicates; Top, recess hole is set to live with shell and cooperates, and adding behind the small sealing ring is tight fit; Bottom, recess hole is set to live with shell and cooperates, and adding behind the large sealing packing ring is tight fit; Bottom at feed tube is set to cylindrical pipe, and its overall diameter is less than the diameter of large sealing packing ring position cylinder, so that block of spring, the back-up ring that an outer casing underpart is abutted against in the other end blocks.
6, the remaining needle transfusion device structure of resistant to blood backflow according to claim 1 is characterized in that, the protection lock nut is to adopt plastic injection-moulded making, and in the protection lock nut projection is set and manages, and the length of protruding pipe is exceeded can make small sealing ring be moved to the broad inner chamber; Protection lock nut top connects tube for transfusion, and the tube for transfusion other end can connect the tee T interface, so that connect multiple medicinal liquid bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025110 CN2868321Y (en) | 2006-01-05 | 2006-01-05 | Remaining needle transfusion system structure for preventing blood from back-flowing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620025110 CN2868321Y (en) | 2006-01-05 | 2006-01-05 | Remaining needle transfusion system structure for preventing blood from back-flowing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2868321Y true CN2868321Y (en) | 2007-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620025110 Expired - Fee Related CN2868321Y (en) | 2006-01-05 | 2006-01-05 | Remaining needle transfusion system structure for preventing blood from back-flowing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2868321Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272302A (en) * | 2013-05-15 | 2013-09-04 | 浙江康泰医疗器械有限公司 | Novel positive-pressure joint |
| CN105771029A (en) * | 2016-04-29 | 2016-07-20 | 光玲 | Anti-reflux positive pressure device |
| CN108568010A (en) * | 2018-04-28 | 2018-09-25 | 冯莞婷 | Remaining needle |
-
2006
- 2006-01-05 CN CN 200620025110 patent/CN2868321Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272302A (en) * | 2013-05-15 | 2013-09-04 | 浙江康泰医疗器械有限公司 | Novel positive-pressure joint |
| CN105771029A (en) * | 2016-04-29 | 2016-07-20 | 光玲 | Anti-reflux positive pressure device |
| CN108568010A (en) * | 2018-04-28 | 2018-09-25 | 冯莞婷 | Remaining needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |