CN1080578C - Volume-expanding pressure-reducing blood return device - Google Patents
Volume-expanding pressure-reducing blood return device Download PDFInfo
- Publication number
- CN1080578C CN1080578C CN 93101648 CN93101648A CN1080578C CN 1080578 C CN1080578 C CN 1080578C CN 93101648 CN93101648 CN 93101648 CN 93101648 A CN93101648 A CN 93101648A CN 1080578 C CN1080578 C CN 1080578C
- Authority
- CN
- China
- Prior art keywords
- pressure
- blood return
- transfusion
- return device
- volume
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000008280 blood Substances 0.000 title claims abstract description 23
- 210000004369 blood Anatomy 0.000 title claims abstract description 23
- 239000002775 capsule Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 7
- 239000010408 film Substances 0.000 claims description 2
- 239000004816 latex Substances 0.000 claims description 2
- 229920000126 latex Polymers 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 210000004204 blood vessel Anatomy 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000003321 amplification Effects 0.000 abstract 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 210000003462 vein Anatomy 0.000 description 3
- 230000036772 blood pressure Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- 201000004569 Blindness Diseases 0.000 description 1
- 206010011732 Cyst Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 208000031513 cyst Diseases 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000002146 exchange transfusion Methods 0.000 description 1
- 210000003191 femoral vein Anatomy 0.000 description 1
- 208000019622 heart disease Diseases 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 210000001321 subclavian vein Anatomy 0.000 description 1
- 210000002073 venous valve Anatomy 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a capacity-expanding and pressure-reducing blood return device. The present invention is composed of a pressure amplification cavity and a pressure deformation bag positioned in the pressure amplification cavity, wherein the pressure amplification cavity is respectively communicated with a suction tube of a transfusion apparatus and a transfusion tube. The deformation bag deforms when bearing small liquid pressure; thereby, the deformation bag displays the blood return in the suction tube when any region of a human body is in deep venipuncture and shallow venipuncture. Thus, medical staff can easily control the depth of puncture and judge whether a needle point is punctured into a cavity of a blood vessel. The present invention fundamentally solves the problems, such as blind puncture and multiple puncture failure, universally existing in clinic for a long time.
Description
The invention belongs to the medical Transfusion device technical field.
Aspect prior art, similar on its 26S Proteasome Structure and Function of various types of disposable transfusion devices, the so-called difference here is meant material (as using high molecular polymer), the manufacturing process of employing or finishes the process (for example CN89104563.5.CN90104427.X) of transfusion.Along with macromolecule polymer material extensive application, though the same with old-fashioned sebific duct transfusion device on its structure, the elastic expansion function of former sebific duct transfusion device disappears substantially, thereby causes the mortality of clinical vein puncture to raise.Showing from experimental data, is example with the 9# syringe needle, and the blood back force value of above-mentioned disposable transfusion device is greater than 120cmH
2O, promptly general normal person almost once can not be successful under the normal operations condition.Its reason just is that water ends following tube for transfusion and filter and is macromolecular material, and is nonelastic.The transfusion device structure that has rubber tube also is generally to use at present, and purpose of its design rubber tube is not the decompression of expanding, but puncture is finished after this pipe of extruding, and generation vacuum suction and the position of blood back judgement needle point.There is following defective in this transfusion device: 1. in piercing process, (1～3mm), elasticity is bad, and long-pending less with liquid contact surface, and blood back pressure is generally at 50cmH for the sebific duct wall thickness
2O is difficult for seeing clear and definite blood back as normal operations, makes puncture itself have blindness; 2. worn out the blood vessel rear wall or at tube chamber but pasted stifledly by blood vessel wall, venous valve etc., also may lose blood back when needle point even negative pressure exists.
Particularly above-mentioned two kinds of transfusion devices are when being applied to shock, heart disease, dehydration and hypopiesi people current events such as weak, or transfusion and dark vein (be generally 20cmH as subclavian vein, femoral vein, venous pressure fast to need the large size syringe needle
2O) situation such as puncture, it is very low that its head wears success rate, often therefore causes serious consequence.
The objective of the invention is to fundamentally solve existing blood exchange transfusion set's defective, improve head and wear success rate.More particularly, just provide a kind of medical Transfusion device that has volume-expanding pressure-reducing blood return device, this transfusion device blood back pressure is 5～8cmH
2O, this pressure are that the minimum caval vein of human body is pressed numerical value, no matter the site of puncture depth or patient's blood pressure height, as long as needle point is worn for the first time and is reached in the lumen of vessels, can in skirt, show enough clear and definite blood back section, reach tube chamber, can open venous transfusion thereby express operator's needle point.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a vertical view of the present invention.
The present invention includes a strain capsule (1), pressure enlarged cavity (3), pressure chamber end cap (4), distortion capsule (1) places in the pressure chamber (3).Pressure chamber walls and the adhesion of end cap wall tight fit inside; The pressure chamber walls upper end is adjacent with the rubbing surface of end cover outer rim; Be drilled with the through hole that diameter is 1mm (2) and be communicated with pressure enlarged cavity (3) on end cap top, distortion capsule (1) is a circle tabernacle shape, bottom it and between at the bottom of the pressure chamber 1～2mm gap is arranged; The material of distortion capsule is the thin film of elastomeric latex or other material, and film thickness is 0.1～0.3mm.This distortion capsule is divided into not connected inner chamber and exocoel with pressure chamber; Leave the gap of 0.5～1mm between distortion cyst wall and the pressure chamber walls, each links to each other the pressure chamber two ends with the tube for transfusion joint with the skirt joint, and lumen communicates, and transfusion lumen, pressure tube chamber and skirt tube chamber are communicated with each other.Skirt (5) is connected in the skirt joint, and tube for transfusion (7) is connected in the tube for transfusion joint, and water is the upper end that (8) are positioned at blood back flowing device, and puncture needle (6) and volume-expanding pressure-reducing blood return device are on the same horizontal level.
During puncture, water ends (8) and is in closed condition, and water ends (8) with full of liquid in transfusion lumen, pressure chamber inner chamber and the skirt tube chamber of lower part, and its pressure is in the state of zero or approximate zero, strain capsule (1) does not deform, and keeps its naturalness-tabernacle shape.Wear when needle point and to reach in the lumen of vessels, the pressure of blood arrives in the pressure chamber by needle tubing (6), skirt (5) immediately; Because tube for transfusion (7) material is a high molecular polymer, elasticity is minimum.Therefore volume-expanding pressure-reducing does not take place.When pressure acts on strain capsule (1), the area that acts on the distortion capsule according to the fluid mechanics principle fluid pressure is hundreds of times of needle point, distortion capsule (1) pressurized is close to pressure chamber end cap (4), and because of through hole (2) is arranged on the end cap, distortion capsule (1) exocoel does not cause air accumulation and pressure to raise, the distortion of distortion capsule is continued, and like this, the volumetrical variation of distortion capsule is enough to make the blood in the needle point to be back to a suitable segment distance in the skirt (5).
Because the setting of volume-expanding pressure-reducing blood return device has at first guaranteed under lower pressure (blood pressure) condition, there is blood back to exist, also guaranteed to have returning of q.s to show that blood enters skirt simultaneously.
The present invention has fundamentally solved existing transfusion device can not have perforator concurrently, and does not have the problem of special-purpose perforator clinically, has guaranteed that head wears success rate.Can greatly save the brain physical work for the medical personnel, increase work efficiency, in time the enforcement of partner treatment; Can avoid the misery that repeatedly punctures and reduce the chance that puncture is infected for the patient.
Claims (3)
1. a volume-expanding pressure-reducing blood return device is characterized in that: comprise a strain capsule (1), pressure enlarged cavity (3) and pressure chamber end cap (4), be out of shape capsule (1) and place in the pressure chamber (3).
2. volume-expanding pressure-reducing blood return device according to claim 1 is characterized in that: be drilled with through hole (2) on end cap (4) top.
3. volume-expanding pressure-reducing blood return device according to claim 1 is characterized in that: the material of distortion capsule (1) is the thin film of elastomeric latex or other material, and film thickness is 0.1～0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93101648 CN1080578C (en) | 1993-02-20 | 1993-02-20 | Volume-expanding pressure-reducing blood return device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93101648 CN1080578C (en) | 1993-02-20 | 1993-02-20 | Volume-expanding pressure-reducing blood return device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1091664A CN1091664A (en) | 1994-09-07 |
| CN1080578C true CN1080578C (en) | 2002-03-13 |
Family
ID=4983708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93101648 Expired - Lifetime CN1080578C (en) | 1993-02-20 | 1993-02-20 | Volume-expanding pressure-reducing blood return device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1080578C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441246C (en) * | 2006-07-12 | 2008-12-10 | 贾宇东 | Tunnel membrane sensitive blood return venous needle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2250151Y (en) * | 1996-03-27 | 1997-03-26 | 张若夫 | Transfusion system easy for looking back flow of blood |
| GB0608046D0 (en) * | 2006-04-25 | 2006-05-31 | Star Syringe Ltd | Syringe |
-
1993
- 1993-02-20 CN CN 93101648 patent/CN1080578C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100441246C (en) * | 2006-07-12 | 2008-12-10 | 贾宇东 | Tunnel membrane sensitive blood return venous needle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1091664A (en) | 1994-09-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NONE Free format text: FORMER OWNER: WANG LIRU JIA SHENGWU Effective date: 20040917 Owner name: BEIJING CHAONENG YUHENG SCIENCE GROUP CO., LTD. Free format text: FORMER OWNER: JIA YUDONG |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040917 Address after: 100080, Beijing, Haidian District people's Congress Road 33, the big line foundation building 19 floor Patentee after: Beijing Chaoneng Yuheng technology Refco Group Ltd Address before: 100077, 4, 22 floor, 1805 West Garden, Beijing Co-patentee before: Wang Liru Patentee before: Jia Yudong Co-patentee before: Jia Shengwu |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130220 Granted publication date: 20020313 |