CN102614563A - High-resistance push rod sac bubble indicating injector for epidural space puncture - Google Patents
High-resistance push rod sac bubble indicating injector for epidural space puncture Download PDFInfo
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- CN102614563A CN102614563A CN2012100629705A CN201210062970A CN102614563A CN 102614563 A CN102614563 A CN 102614563A CN 2012100629705 A CN2012100629705 A CN 2012100629705A CN 201210062970 A CN201210062970 A CN 201210062970A CN 102614563 A CN102614563 A CN 102614563A
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- push rod
- vesicle
- syringe
- drag
- syringe needle
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Abstract
The invention relates to a high-resistance push rod sac bubble indicating injector for epidural space puncture. During puncture on spinal putamen, spinal cord or nerves are easy to injure. The high-resistance push rod sac bubble indicating injector for epidural space puncture comprises an injector body, a needle head and a push rod, wherein a branch pipe is arranged on the injector body or an injector body nozzle or at the root of the needle head, and a sealed sac bubble is arranged on the branch pipe; or a through hole is formed in the injector body or the injector body nozzle or in the root of the needle head, and an elastic sleeve film is sealed on the through hole; and when the push rod is pushed forwards, the elastic sleeve film bubbles, and (P1-P0)*S is less than or equal to Fmax, wherein P1 is the pressure of a fluid in the sealed sac bubble or the elastic sleeve film, P0 is the atmospheric pressure, S is the projection area of a sealed surface of the push rod on the cross section of the push rod, and Fmax is the maximal static friction force between the push rod and the inner wall of the injector body. The injector is simple in use and easy to produce, and is widely applied to operative anesthesia and clinical inspection treatment in various medical institutions.
Description
Technical field
The present invention relates to a kind of epidural puncture with high-drag push rod vesicle indication syringe.
Background technology
Modern medical service needs earlier the vertebra dura mater to be punctured when the patient is carried out part or general anesthesia, makes syringe needle get into the vertebra epidural space.Sting shallowly, can't penetrate the vertebra dura mater, can't normally anaesthetize; Sting dark, easily Spinal Cord or nerve again.Operator's sensation and experience depended in the puncture success or not fully.
On JIUYUE 10th, 2003; Publication number is that the Chinese invention patent of CN2571331Y discloses " a kind of cavum epidural puncture is with vesicle indication pressurize syringe "; This device comprises body (being syringe); The bottom is provided with communicating pipe before this body, and communicating pipe is connected with vesicle outward, and the body rearward end is provided with push rod locating groove device.
Aforementioned patent at first is connected puncture needle on the body when work, sucks liquid or gas, takes off the vesicle lid; It is subcutaneous then the puncture needle syringe needle to be thrust human body; The pushing syringe push rod is heaved vesicle again.Before continuing inserting needle, because both hands will leave the push rod afterbody, the pressure in the vesicle can promote push rod backward, and vesicle is suppressed automatically.In order to keep vesicle to fill state, designed draw-in groove push rod has been fixed, make vesicle pressure not promote push rod backward, vesicle can keep heaving state when both hands leave.Hand-held at last body slowly advances puncture needle, and when vesicle became flat suddenly, expression puncture needle syringe needle successfully thrust the epidural space of low pressure.This device has replaced people's feel, changes and shows with the automatic continuous monitoring pressure of vesicle and puncture successfully, and puncture success rate improves, and the convenience of use also has raising.
But its push rod positioner complicated operation uses inconvenience, and can cause the operator to grip shakiness, influences operating accuracy.
Summary of the invention
The present invention will solve the above-mentioned defective of prior art, and the cavum epidural puncture that a kind of safe ready more is provided is with high-drag push rod vesicle indication syringe.
This cavum epidural puncture comprises body, syringe needle and push rod with high-drag push rod vesicle indication syringe; It is characterized in that: on the said body or on the body mouth or the syringe needle root be provided with an arm, this arm is provided with a sealing vesicle, pushes away before the push rod; The sealing vesicle expands, and following relation is arranged: (P
1-P
0) * S≤Fmax, wherein P
1Be sealing vesicle inner fluid pressure; P
0Be atmospheric pressure; S is the projected area of push rod seal face on the push rod cross section; Fmax is the maximum static friction force between push rod and the body inwall.
Above-mentioned relation is embodied in: after pushing away, seal the vesicle expansion before the push rod, unclamp push rod, push rod stands fast.Vesicle is processed with elasticity or flexible material, and is waterproof, airtight.
As optimization, said arm is arranged on the body leading portion sidewall, and communicates with device cavity.
As optimization, said arm is arranged on the body mouth sidewall, and communicates with device cavity.
As optimization, said arm is arranged on the syringe needle root sidewall, and communicates with the syringe needle inner chamber.
Another kind of design of the present invention: this epidural puncture comprises body, syringe needle and push rod with high-drag push rod vesicle indication syringe; It is characterized in that: have through hole on the said body or on the body mouth or on the syringe needle root; And the flexible mantle of envelope on this through hole; Push away before the push rod, elasticity mantle bubbling, and following relation is arranged: (P
1-P
0) * S≤Fmax, wherein P
1Be elasticity mantle bubbling inner fluid pressure; P
0Be atmospheric pressure; S is the projected area of push rod seal face on the push rod cross section; Fmax is the maximum static friction force between push rod and the body inwall.The above-mentioned relation concrete manifestation also is: after pushing away, seal the vesicle expansion before the push rod, unclamp push rod, push rod stands fast.
As optimization, said through hole is arranged on the body leading portion sidewall, and communicates with device cavity.
As optimization, said through hole is arranged on the body mouth sidewall, and communicates with device cavity.
As optimization, said through hole is arranged on the syringe needle root sidewall, and communicates with the syringe needle inner chamber.
Epidural puncture of the present invention with high-drag push rod vesicle indication syringe have puncture success rate height, high safety, cost low, simple to operate, be beneficial to new hand and use and make things convenient for the advantage of imparting knowledge to students; Even the new life of medical college also can skillfully accomplish vertebra dura mater puncture procedure, can be adaptable across the surgery anesthesia and the Clinical Laboratory treatment of various medical institutions.
Description of drawings
Below in conjunction with accompanying drawing this epidural puncture is described further with high-drag push rod vesicle indication syringe:
Fig. 1 is the part section structural representation of this epidural puncture with high-drag push rod vesicle indication syringe embodiment one;
Fig. 2 is the part section structural representation of this epidural puncture with high-drag push rod vesicle indication syringe embodiment two;
Fig. 3 is the part section structural representation of this epidural puncture with high-drag push rod vesicle indication syringe embodiment three;
Fig. 4 is that this epidural puncture is with the preceding part section structural representation of high-drag push rod vesicle indication syringe embodiment four bubblings;
Fig. 5 is this epidural puncture with part section structural representation behind high-drag push rod vesicle indication syringe embodiment four bubblings;
Fig. 6 is that this epidural puncture is with the preceding part section structural representation of high-drag push rod vesicle indication syringe embodiment five bubblings;
Fig. 7 is this epidural puncture with part section structural representation behind high-drag push rod vesicle indication syringe embodiment five bubblings;
Fig. 8 is that this epidural puncture is with the preceding part section structural representation of high-drag push rod vesicle indication syringe embodiment six bubblings;
Fig. 9 is this epidural puncture with part section structural representation behind high-drag push rod vesicle indication syringe embodiment six bubblings
1 is body, and 2 is syringe needle, and 3 is push rod, and 4 is side pipe, and 5 are the sealing vesicle, 6 body mouths, and 7 is through hole, and 8 is the elasticity mantle, and 9 are the sealing plug, and 10 is the garter spring at elasticity mantle two ends.
The specific embodiment
Embodiment one: as shown in Figure 1, this epidural puncture comprises body 1, syringe needle 2 and push rod 3 with high-drag push rod vesicle indication syringe, and said body 1 leading portion sidewall is provided with a side pipe 4; This side pipe 4 is provided with a sealing vesicle 5; Push away before the push rod 3, sealing vesicle 5 expands, and following relation is arranged: (P
1-P
0) * S≤Fmax, wherein P
1Be sealing vesicle 5 inner fluid pressure; P
0Be atmospheric pressure; S is the projected areas of push rod 3 sealing surfaces on push rod 3 cross sections; Fmax is the maximum static friction force between push rod 3 and body 1 inwall.
At first spur push rod 3 during use, medicine or liquid are sucked body 1; Syringe needle 2 thrusts subcutaneous; Grip body 1 inserting needle, arrive near the compact tissue of spinal column; Thumb promotes push rod 3 then, and sealing vesicle 5 is heaved to suitable size (about 1～2 centimeter of diameter); Thumb leaves push rod 3 tail ends, grips body 1 slow inserting needle once more, and the stiction between push rod 3 and body 1 inwall keeps push rod 3 to stand fast at this moment, and vesicle 5 still is in full state; Slowly inserting needle when vesicle 5 becomes flat suddenly, representes that syringe needle 2 successfully thrusts epidural space.
Wherein seal vesicle 5 and should select for use elasticity or flexible material to process, waterproof, airtight.
Said push rod 3 front ends can be set up sealing plug 9, as the part of push rod.
Maximal friction Fmax between push rod 3 and body 1 inwall is that push rod 3 refers to the maximal friction between main and body 1 inwall as a whole.
When sealing plug 9 was arranged, Fmax was the maximal friction between sealing plug 9 and body 1 inwall and the set of the maximal friction between other positions of push rod and body 1 inwall.
Embodiment two: as shown in Figure 2, said side pipe 4 is arranged on body mouth 6 sidewalls, and communicates with body 1 inner chamber, and side pipe 4 is provided with a sealing vesicle 5, and remainder and structure are as shown in the embodiment one.
Embodiment three: as shown in Figure 3, said side pipe 4 is arranged on syringe needle 2 root sidewalls, and communicates with syringe needle 2 inner chambers, and side pipe 4 is provided with a sealing vesicle 5, and remainder and structure are as shown in the embodiment one.
Embodiment four: like Fig. 4, shown in 5; This epidural puncture comprises body 1, syringe needle 2 and push rod 3 with high-drag push rod vesicle indication syringe; Have through hole 7 on the said body 1 leading portion sidewall, and the flexible mantle 8 of envelope on this through hole, push away before the push rod 3; Elasticity mantle 8 bubblings, and following relation is arranged: (P
1-P
0) * S≤Fmax, wherein P
1Be elasticity mantle 8 bubbling inner fluid pressure; P
0Be atmospheric pressure; S is the projected areas of push rod 3 sealing surfaces on the push rod cross section; Fmax is the maximum static friction force between push rod 3 and body 1 inwall.
During use, at first spur push rod 3, medicine or liquid are sucked body 1; Syringe needle 2 thrusts subcutaneous; Grip body 1 inserting needle, arrive near the compact tissue of spinal column; Thumb promotes push rod 3 then, and elasticity mantle 8 is heaved to suitable size (can make the healthcare givers obviously discover gets final product); Thumb leaves push rod 3 tail ends, grips body 1 slow inserting needle once more, and the stiction between push rod 3 and body 1 inwall keeps push rod 3 to stand fast at this moment, still is in full state in elasticity mantle 8 bubblings; Slowly inserting needle when elasticity mantle 8 bubblings become flat suddenly, representes that syringe needle 2 successfully thrusts epidural space.
Embodiment five: like Fig. 6, shown in 7, said through hole 7 is arranged on body mouth 6 sidewalls, and communicates with body 1 inner chamber, and through hole 7 is provided with an elasticity mantle 8, and remainder and structure are as shown in the embodiment four.
Embodiment six: like Fig. 8, shown in 9, said through hole 7 is arranged on the syringe needle 2 root sidewalls, and communicates with syringe needle 2 inner chambers, and through hole 7 is provided with an elasticity mantle 8, and remainder and structure are as shown in the embodiment four.
Above embodiment is the illustrative novel to this reality just, any being embodied in: push away, seal the vesicle expansion before the push rod, unclamp push rod, the same appliances that push rod stands fast all falls into the protection domain of patent of the present invention.
Claims (8)
1. a cavum epidural puncture is with high-drag push rod vesicle indication syringe; Comprise body, syringe needle and push rod; It is characterized in that: on the said body or on the body mouth or the syringe needle root be provided with an arm, this arm is provided with a sealing vesicle, pushes away before the push rod; The sealing vesicle expands, and following relation is arranged: (P
1-P
0) * S≤Fmax, wherein P
1Be sealing vesicle inner fluid pressure; P
0Be atmospheric pressure; S is the projected area of push rod seal face on the push rod cross section; Fmax is the maximum static friction force between push rod and the body inwall.
2. cavum epidural puncture as claimed in claim 1 is with high-drag push rod vesicle indication syringe, and it is characterized in that: said arm is arranged on the body leading portion sidewall, and communicates with device cavity.
3. cavum epidural puncture as claimed in claim 1 is with high-drag push rod vesicle indication syringe, and it is characterized in that: said arm is arranged on the body mouth sidewall, and communicates with device cavity.
4. cavum epidural puncture as claimed in claim 1 is with high-drag push rod vesicle indication syringe, and it is characterized in that: said arm is arranged on the syringe needle root sidewall, and communicates with the syringe needle inner chamber.
5. a cavum epidural puncture is with high-drag push rod vesicle indication syringe; Comprise body, syringe needle and push rod; It is characterized in that: have through hole on the said body or on the body mouth or on the syringe needle root, and the flexible mantle of envelope on this through hole, push away before the push rod; Elasticity mantle bubbling, and following relation is arranged: (P
1-P
0) * S≤Fmax, wherein P
1Be elasticity mantle bubbling inner fluid pressure; P
0Be atmospheric pressure; S is the projected area of push rod seal face on the push rod cross section; Fmax is the maximum static friction force between push rod and the body inwall.
6. cavum epidural puncture as claimed in claim 5 is with high-drag push rod vesicle indication syringe, and it is characterized in that: said through hole is arranged on the body leading portion sidewall.
7. cavum epidural puncture as claimed in claim 5 is with high-drag push rod vesicle indication syringe, and it is characterized in that: said through hole is arranged on the body mouth sidewall.
8. cavum epidural puncture as claimed in claim 5 is with high-drag push rod vesicle indication syringe, and it is characterized in that: said through hole is arranged on the syringe needle root sidewall, and communicates with the syringe needle inner chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210062970.5A CN102614563B (en) | 2012-03-12 | 2012-03-12 | Cavum epidural puncture high-drag push rod vesicle indication injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210062970.5A CN102614563B (en) | 2012-03-12 | 2012-03-12 | Cavum epidural puncture high-drag push rod vesicle indication injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102614563A true CN102614563A (en) | 2012-08-01 |
| CN102614563B CN102614563B (en) | 2016-02-17 |
Family
ID=46555003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210062970.5A Active CN102614563B (en) | 2012-03-12 | 2012-03-12 | Cavum epidural puncture high-drag push rod vesicle indication injector |
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| CN (1) | CN102614563B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9144436B2 (en) | 2013-06-24 | 2015-09-29 | Thomas A. Senatore | Apparatus for hanging drop detection of epidural space penetration |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4284084A (en) * | 1979-06-29 | 1981-08-18 | The Kendall Company | Syringe assembly |
| CN201409922Y (en) * | 2009-03-27 | 2010-02-24 | 孙东 | Epidural space puncture detection device |
-
2012
- 2012-03-12 CN CN201210062970.5A patent/CN102614563B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4284084A (en) * | 1979-06-29 | 1981-08-18 | The Kendall Company | Syringe assembly |
| CN201409922Y (en) * | 2009-03-27 | 2010-02-24 | 孙东 | Epidural space puncture detection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9144436B2 (en) | 2013-06-24 | 2015-09-29 | Thomas A. Senatore | Apparatus for hanging drop detection of epidural space penetration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102614563B (en) | 2016-02-17 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20151229 Address after: 453400, Henan County, Xinxiang City, Changyuan Province Meng Gang reed Garden Industrial Zone Applicant after: HENAN TUOREN MEDICAL DEVICE GROUP CO., LTD. Address before: Shinan District 266000 Shandong city of Qingdao province Xuzhou Road 32, building 3, unit 2, 802 Applicant before: Yan Qing Applicant before: Zhu Dongya |
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