CA2047677A1 - Hypodermic injection syringe provided with a plunger able to retract and contain the hypodermic needle after use - Google Patents
Hypodermic injection syringe provided with a plunger able to retract and contain the hypodermic needle after useInfo
- Publication number
- CA2047677A1 CA2047677A1 CA002047677A CA2047677A CA2047677A1 CA 2047677 A1 CA2047677 A1 CA 2047677A1 CA 002047677 A CA002047677 A CA 002047677A CA 2047677 A CA2047677 A CA 2047677A CA 2047677 A1 CA2047677 A1 CA 2047677A1
- Authority
- CA
- Canada
- Prior art keywords
- plunger
- syringe
- needle
- cylindrical body
- hollow shaft
- 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.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
- A61M2005/3241—Needle retraction energy is accumulated inside of a hollow plunger rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3234—Fully automatic needle retraction, i.e. in which triggering of the needle does not require a deliberate action by the user
- A61M2005/3241—Needle retraction energy is accumulated inside of a hollow plunger rod
- A61M2005/3242—Needle retraction by vacuum
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
ABSTRACT
A syringe is described provided with an engagement device which at the end of the plunger travel becomes connected to the hypodermic needle and to a pneumatic actuator, preferably of vacuum type, arranged to cause said needle to enter an appropriate chamber in the plunger after use.
A syringe is described provided with an engagement device which at the end of the plunger travel becomes connected to the hypodermic needle and to a pneumatic actuator, preferably of vacuum type, arranged to cause said needle to enter an appropriate chamber in the plunger after use.
Description
20~7677 HYPODERMIC INJECTION SYRINGE PROVIDED WITH A PLUNGER ABLE TO
RETRACT AND CONTAIN THE HYPODERMIC NEEDLE AFTER ~SE
Field of th_ invent o_ This invention relates to a syringe provided with an engagemcnt device able to cause the hypodermic needle to enter a cavity in the plunger shaft when the injection has been completed.
Stat_ of_the art The problem of making a hypodermic syringe needle innocuous is currently important because of the serious problems of infection connected with accidental pricking with used and thus infected syringe needles, a problem which is exacerbated because many syringes designed for once-only use can in fact be used more than once.
Italian patent application No. 9543 A/88 of the present applicants describes a syringe in which, after use, the needle is made to enter a cavity in the plunger by means of a tension spring, one end of which is fixed to the imler surface of the plunger and which becomes operationally connected to a support member provided with a pawl able to engage the needle at the end of the plunger stroke and to pu]l it into said cavity.
Although effective, this device has certain constructional problems which make it difficul-t to implement in that the tension spring has to be fixed to the interior of the plunger, as stated.
Summa~ of_the invention 204~677 The present invention enables a similar result to be obtained in a manner which considera~ly simplifies the cons1:ruction and/or assembly of the svringe.
The syringe according to the present invention is forraed from a cylindrical body, a plunger slidable within said cylindrical body and provided with a hollow shaft defining an inner chamber, and a hollow needle or metal cannula connected to said cylindrical bodv by first means which shear under a determined load, said syringe being characterised by comprising an engagement device which is connected to said plunger oy second means which shear under d determined load at the end of travel of said plunger, and becomes operationally connected at the end of travel of the plunger to said needle and to a pneumatic actuator able to cause said needle to enter said chamber in the shaft of said plunger.
According to a preferred embodiment said pneumatic actuator is of the vacuum type, said plunger advantageously being provi-led with a hollow shaft defining an inner chamber in which vacuum is created and in which a piston rigid with said engagement device is slidable under sealed conditions.
With the proposed arrangemerlt the syringe construction is simplified and its performance and reliability are optimized.
Detcliled description o-f_the invent on These and further advantages and innovative and operational characteristics of the present invention will be more apparent to the expert of the art with the aid of the accompanying Figures 1 to 5 which are given by way of non-limiting example, and of which:
Figure 1 is a partly sectional view of the syringe according to the invention;
Figure 2 is an axial section through the syringe during use;
Figure 3 shows the syringe of Figure 2 after use, with the needle re-tracted;
Figure 4 shows the syringe of Figure 2 during assembly;
` 2047~77 .
Figure 5 shows a detail of the syringe of Figure 2 to an enlarged scale~
In Figures 1 to 4 the refererlce numeral 10 indicates overall a hypodermic syringe constructed in accordance with the invention, and 11 indicates its cylindrical body, which is provicled with a neck 12 and a guide rirlg 13.
The reference numeral 14 indicates a double-ended hollow needle 14 or metal cannula, provided with an engagement recess 15 and made rigid with the base 16 by a ring 18 or washer of a material which shears under a predetermined load; the base 16 is fixed to the neck 12 of the body 11.
lS The reference numeral 19 indicates overall the plunger which is slidable within the body 11 and is provided with a head 20 and a hollow shaft 21.
The head 20 of the plunger 19 is formed from a ring 22 of par-ticularly elastic rubber, the channel 23 of which is closed by a disc 24 of easily shearable material.
The head 20 is fi~ed in a sealed manner to the shaft 21 of the plunger 19 b~ a plug 25 provided with a tube 26, which is forcibly inserted into the channel 23 of the rubber ring ~2.
The reference numeral 27 indicates an engagemerlt rod with which a disc 28 provided wi-th an X-shaped cut forming elastic flaps 29, visible in Figure 5, is rigid.
The rod 27 is fixed to the tube 26 by a washer 30 of a material which shears under a predetermirled load.
The rod 27 is rigidly connected by the hemispherical connec-tor 31 to a piston 32, which is slidable in a sealed malmer within the cylindrical chamber 33 of the hollow shaft 21.
20~7~77 The sealed sliding of the piston 32 in the chamber 33 is ubtained either by the sealing contclct between the contacting surfaces or, if neces~sarv, by rnounting a suitable seal ring on the piston 32.
A predetermined vacuum is provided in the chamber 33 of the hollow shaft 21.
The hollow shaft 21 has an end portion 34 of reduced outer diameter in order to reduce the resistance arising from contact with the inner wall of the guide ring 13 during the final part of the travel of the plunger lg.
The reference numeral 35 indicates two rnagnets incorporated in the piston 32 and 36 indicates two further magnets incorporated in the shaft 21 in proximity to the portion 34.
The pairs of magnets 35 and 36 have opposite polarities so that they attract each other.
When the syringe 10 is in use and the plunger 19 is about to finish its injection stroke, as shown in Figures l and 2, the disc 24 is lacerated by the inner point of the needle 14, the rod 27 then engaging the needle via the disc 28, the elastic flaps 29 of which engage the recess 15 in the needle 14.
The thrust exertecl by the operator on the plunger 19 during the final part of the inject iOIl stroke to ensure that the liquid to be injected is completely e~pellecl causes the washer 30 to break, thus releasing the rod 27 and -the piston 32 from the plunger head 20. Uncler these conclitions, under the action of the vacuum present in the chamber 33, the piston 32, the rod 27 and the needle engaged wi-th it are sucked into the chamber 33, where they are retained by the mutual attraction of the pairs of magnets 35 and 36, as shown in Figure 3.
The needle 14 carmot be reused and the syringe 10 is therefore rendered innocuous.
Constructional mod;ticatiolls of the svrirlge 10 fall within the scope of the present invelltioll; for e~ample the needle engagement device could be other thall the rod 27 and disc 2~1; the vacuum chamber 33 coul(l be in the forln of a contairler housed in the hollow shaft 21.
The advantages of the presellt invention are the e~treme ease of construction and assemblv of the syringe, which in its e~ternal appearance hardly does not differ from the normal commercially available disposable syringes, but has the advalltage that the fact that the needle disappears in-to its interior after use ma~es it innocuous and truly usable only once.
RETRACT AND CONTAIN THE HYPODERMIC NEEDLE AFTER ~SE
Field of th_ invent o_ This invention relates to a syringe provided with an engagemcnt device able to cause the hypodermic needle to enter a cavity in the plunger shaft when the injection has been completed.
Stat_ of_the art The problem of making a hypodermic syringe needle innocuous is currently important because of the serious problems of infection connected with accidental pricking with used and thus infected syringe needles, a problem which is exacerbated because many syringes designed for once-only use can in fact be used more than once.
Italian patent application No. 9543 A/88 of the present applicants describes a syringe in which, after use, the needle is made to enter a cavity in the plunger by means of a tension spring, one end of which is fixed to the imler surface of the plunger and which becomes operationally connected to a support member provided with a pawl able to engage the needle at the end of the plunger stroke and to pu]l it into said cavity.
Although effective, this device has certain constructional problems which make it difficul-t to implement in that the tension spring has to be fixed to the interior of the plunger, as stated.
Summa~ of_the invention 204~677 The present invention enables a similar result to be obtained in a manner which considera~ly simplifies the cons1:ruction and/or assembly of the svringe.
The syringe according to the present invention is forraed from a cylindrical body, a plunger slidable within said cylindrical body and provided with a hollow shaft defining an inner chamber, and a hollow needle or metal cannula connected to said cylindrical bodv by first means which shear under a determined load, said syringe being characterised by comprising an engagement device which is connected to said plunger oy second means which shear under d determined load at the end of travel of said plunger, and becomes operationally connected at the end of travel of the plunger to said needle and to a pneumatic actuator able to cause said needle to enter said chamber in the shaft of said plunger.
According to a preferred embodiment said pneumatic actuator is of the vacuum type, said plunger advantageously being provi-led with a hollow shaft defining an inner chamber in which vacuum is created and in which a piston rigid with said engagement device is slidable under sealed conditions.
With the proposed arrangemerlt the syringe construction is simplified and its performance and reliability are optimized.
Detcliled description o-f_the invent on These and further advantages and innovative and operational characteristics of the present invention will be more apparent to the expert of the art with the aid of the accompanying Figures 1 to 5 which are given by way of non-limiting example, and of which:
Figure 1 is a partly sectional view of the syringe according to the invention;
Figure 2 is an axial section through the syringe during use;
Figure 3 shows the syringe of Figure 2 after use, with the needle re-tracted;
Figure 4 shows the syringe of Figure 2 during assembly;
` 2047~77 .
Figure 5 shows a detail of the syringe of Figure 2 to an enlarged scale~
In Figures 1 to 4 the refererlce numeral 10 indicates overall a hypodermic syringe constructed in accordance with the invention, and 11 indicates its cylindrical body, which is provicled with a neck 12 and a guide rirlg 13.
The reference numeral 14 indicates a double-ended hollow needle 14 or metal cannula, provided with an engagement recess 15 and made rigid with the base 16 by a ring 18 or washer of a material which shears under a predetermined load; the base 16 is fixed to the neck 12 of the body 11.
lS The reference numeral 19 indicates overall the plunger which is slidable within the body 11 and is provided with a head 20 and a hollow shaft 21.
The head 20 of the plunger 19 is formed from a ring 22 of par-ticularly elastic rubber, the channel 23 of which is closed by a disc 24 of easily shearable material.
The head 20 is fi~ed in a sealed manner to the shaft 21 of the plunger 19 b~ a plug 25 provided with a tube 26, which is forcibly inserted into the channel 23 of the rubber ring ~2.
The reference numeral 27 indicates an engagemerlt rod with which a disc 28 provided wi-th an X-shaped cut forming elastic flaps 29, visible in Figure 5, is rigid.
The rod 27 is fixed to the tube 26 by a washer 30 of a material which shears under a predetermirled load.
The rod 27 is rigidly connected by the hemispherical connec-tor 31 to a piston 32, which is slidable in a sealed malmer within the cylindrical chamber 33 of the hollow shaft 21.
20~7~77 The sealed sliding of the piston 32 in the chamber 33 is ubtained either by the sealing contclct between the contacting surfaces or, if neces~sarv, by rnounting a suitable seal ring on the piston 32.
A predetermined vacuum is provided in the chamber 33 of the hollow shaft 21.
The hollow shaft 21 has an end portion 34 of reduced outer diameter in order to reduce the resistance arising from contact with the inner wall of the guide ring 13 during the final part of the travel of the plunger lg.
The reference numeral 35 indicates two rnagnets incorporated in the piston 32 and 36 indicates two further magnets incorporated in the shaft 21 in proximity to the portion 34.
The pairs of magnets 35 and 36 have opposite polarities so that they attract each other.
When the syringe 10 is in use and the plunger 19 is about to finish its injection stroke, as shown in Figures l and 2, the disc 24 is lacerated by the inner point of the needle 14, the rod 27 then engaging the needle via the disc 28, the elastic flaps 29 of which engage the recess 15 in the needle 14.
The thrust exertecl by the operator on the plunger 19 during the final part of the inject iOIl stroke to ensure that the liquid to be injected is completely e~pellecl causes the washer 30 to break, thus releasing the rod 27 and -the piston 32 from the plunger head 20. Uncler these conclitions, under the action of the vacuum present in the chamber 33, the piston 32, the rod 27 and the needle engaged wi-th it are sucked into the chamber 33, where they are retained by the mutual attraction of the pairs of magnets 35 and 36, as shown in Figure 3.
The needle 14 carmot be reused and the syringe 10 is therefore rendered innocuous.
Constructional mod;ticatiolls of the svrirlge 10 fall within the scope of the present invelltioll; for e~ample the needle engagement device could be other thall the rod 27 and disc 2~1; the vacuum chamber 33 coul(l be in the forln of a contairler housed in the hollow shaft 21.
The advantages of the presellt invention are the e~treme ease of construction and assemblv of the syringe, which in its e~ternal appearance hardly does not differ from the normal commercially available disposable syringes, but has the advalltage that the fact that the needle disappears in-to its interior after use ma~es it innocuous and truly usable only once.
Claims (8)
1. A hypodermic injection syringe formed from a cylindrical body (11), a plunger (19) slidable within said cylindrical body and provided with a hollow shaft (21) defining an inner chamber, and a hollow needle (14) or metal cannula connected to said cylindrical body by first sheardble means (18), said syringe being characterised by comprising an engagement device (27, 28, 29) which is connected to said plunger (19) by second means (30) which shear under a determined load at the end of travel of said plunger, and becomes operationally connected at the end of travel of the plunger to said needle (14) and to a pneumatic actuator (32, 33) able to cause said needle to enter said chamber (33) in the shaft of said plunger.
2. A syringe as claimed in claim 1, characterised in that said pneumatic actuator (32, 33) is of vacuum type.
3. A syringe as claimed in claim 1, characterised in that said plunger (19) is provided with a hollow shaft (21) having an inner chamber in which vacuum is created and in which a piston (32) rigid with said engagement device (27, 28, 29) is slidable under sealed conditions.
4. A syringe as claimed in claim 1, characterised in that said engagement device (27, 28, 29) consists of a rod (27) rigid with d disc (28) provided with an X-shaped cut forming elastic flaps (29) engagable with d recess (15) in said needle (14).
5. A syringe as claimed in claims 1 and 4, characterised in that said second shearable means (30) are a washer fixed to said rod (27) and to the head (20) of the plunger (19) and constructed of a material which shears under a determined load.
6. A syringe as claimed in claim 1, characterised in that said first shearable means (18) consist of a ring (18) constructed of a material shearing under a determined load, and rigid with said needle (14) and with a base (16) which is fixed to the cylindrical body (11).
7. A syringe as claimed in claim 3, characterised in that said piston (32) and said hollow shaft (21) are provided with at least one pair of magnets (35, 36) arranged to attract each other.
8. A syringe as claimed in claim 3, characterised in that said plunger (19) comprises an end portion (34) of reduced diameter to reduce the contact with a guide ring (13) with which said cylindrical body (11) is provided.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT19028A/90 | 1990-01-09 | ||
| IT01902890A IT1238143B (en) | 1990-01-09 | 1990-01-09 | SYRINGE FOR HYPODERMIC INJECTIONS EQUIPPED WITH A PISTON SUITABLE FOR WITHDRAWING AND CONTAINING THE HYPODERMIC NEEDLE AFTER ITS USE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2047677A1 true CA2047677A1 (en) | 1991-07-10 |
Family
ID=11153952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002047677A Abandoned CA2047677A1 (en) | 1990-01-09 | 1991-01-04 | Hypodermic injection syringe provided with a plunger able to retract and contain the hypodermic needle after use |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5176640A (en) |
| EP (1) | EP0462250B1 (en) |
| JP (1) | JPH04506469A (en) |
| CN (1) | CN1055669A (en) |
| AT (1) | ATE130769T1 (en) |
| AU (1) | AU7067291A (en) |
| CA (1) | CA2047677A1 (en) |
| DE (1) | DE69114917T2 (en) |
| IT (1) | IT1238143B (en) |
| WO (1) | WO1991010461A1 (en) |
Families Citing this family (40)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06508770A (en) * | 1991-04-17 | 1994-10-06 | ライルズ，ルイス | Syringe |
| ATE164771T1 (en) * | 1992-06-15 | 1998-04-15 | Adventec Inc | NEEDLE PROTECTED SYRINGE |
| UA26190C2 (en) * | 1992-07-28 | 1999-07-19 | Сейфтек Ай Лімітед | Syringe |
| US5336198A (en) * | 1993-02-01 | 1994-08-09 | Innova Development Corp. | Hypodermic syringe with needle retraction feature |
| US5382235A (en) * | 1993-07-07 | 1995-01-17 | R.M.S. Safety, Inc. | Device for capturing and retracting the needle cannula of a disposable syringe |
| US6280401B1 (en) | 1993-08-23 | 2001-08-28 | Sakharam D. Mahurkar | Hypodermic needle assembly |
| US5836921A (en) | 1993-08-23 | 1998-11-17 | Mahurkar; Sakharam D. | Hypodermic needle assembly |
| US5338311A (en) | 1993-08-23 | 1994-08-16 | Mahurkar Sakharam D | Hypodermic needle assembly |
| US5643222A (en) * | 1993-08-23 | 1997-07-01 | Mahurkar; Sakharam D. | Hypodermic needle assembly |
| TR27469A (en) * | 1993-10-21 | 1995-05-29 | Safetech 5 Sa | Single-use syringes. |
| AUPM571594A0 (en) * | 1994-05-18 | 1994-06-09 | Sutton, Steven Michael | A safety syringe |
| ES2117569B1 (en) * | 1996-05-23 | 1999-03-16 | Redrado Fernando Melero | SINGLE USE SYRINGE. |
| AU2899597A (en) * | 1996-05-23 | 1997-12-09 | Fernando Melero Redrado | Disposable syringe |
| ES2133099B1 (en) * | 1997-05-22 | 2000-04-01 | Redrado Fernando Melero | IMPROVEMENTS IN SINGLE USE SYRINGES. |
| US5868713A (en) * | 1997-04-03 | 1999-02-09 | L.O.M. Laboratories Inc. | Pneumatic retractable syringe |
| US6117112A (en) | 1997-11-18 | 2000-09-12 | Mahurkar; Sakharam D. | Single-use safety syringe |
| ES2149099B1 (en) * | 1998-06-16 | 2001-05-16 | Segui Pastor Vicente Miguel | A DISPOSABLE SYRINGE. |
| US6210375B1 (en) * | 1998-09-30 | 2001-04-03 | Becton, Dickinson And Company | Needle retraction mechanism with controlled retraction speed |
| AU781599B2 (en) * | 1999-09-09 | 2005-06-02 | Roy Tudor Brewer | A retractable syringe |
| EP1128862A1 (en) * | 1999-09-09 | 2001-09-05 | Roy Tudor Brewer | A retractable syringe |
| US6530903B2 (en) | 2000-02-24 | 2003-03-11 | Xiping Wang | Safety syringe |
| CA2412409C (en) | 2002-11-20 | 2007-01-23 | Ming-Jeng Shue | Disposable syringe |
| US6613016B1 (en) * | 2003-01-21 | 2003-09-02 | Jen Chuan Ku | Safety hypodermic syringe |
| CN101327350B (en) * | 2003-02-13 | 2010-10-13 | 许明正 | Safe instrument with injection and hemospasia functions |
| EP1706032B1 (en) * | 2004-01-23 | 2014-01-08 | Medigard Limited | Improvements to a blood collection device |
| CA2580092C (en) * | 2004-09-03 | 2011-03-22 | John Klippenstein | Single-use pneumatic safety syringe with retractable needle |
| TWI265036B (en) * | 2005-04-29 | 2006-11-01 | Guo-Ming Huang | Safety injector and method of operating the same |
| CN100411698C (en) * | 2005-05-09 | 2008-08-20 | 黄国明 | Safety injector and its operating method |
| DE112006000943T5 (en) | 2005-05-09 | 2008-07-03 | Analytica Limited, Eight Mile Plains | Retractable needle unit |
| TWI419723B (en) * | 2005-09-02 | 2013-12-21 | L O M Lab Inc | Single-use pneumatic safety syringe with retractable needle |
| CN100435877C (en) * | 2006-05-10 | 2008-11-26 | 李文勇 | Disposable self-destroyed anaesthesia needle syringe |
| US7918821B2 (en) * | 2009-05-05 | 2011-04-05 | Mahurkar Sakharam D | Universal safety syringe |
| CN101940808B (en) * | 2010-08-12 | 2013-01-09 | 骆忠林 | Disposable all-plastic self-destruction syringe |
| CN103648559B (en) * | 2011-05-31 | 2016-03-09 | L.O.M.实验室股份有限公司 | Modular gas activates retractable needle assembly |
| CN208229182U (en) | 2014-10-20 | 2018-12-14 | 贝克顿·迪金森公司 | measuring device, monitoring device and monitoring system |
| CN205252220U (en) | 2014-10-31 | 2016-05-25 | L.O.M.实验室股份有限公司 | Retractable needle formula syringe |
| CA3012020A1 (en) | 2015-01-20 | 2016-07-28 | L.O.M. Laboratories Inc. | Retractable needle syringe with unitary propellant release module |
| CN110382024A (en) * | 2016-12-06 | 2019-10-25 | 注射科技股份有限公司 | For with the method and apparatus of retractable needles filling syringe |
| CN107569747A (en) * | 2017-09-25 | 2018-01-12 | 南京律智诚专利技术开发有限公司 | A kind of disposable injection device |
| CN107497017A (en) * | 2017-09-25 | 2017-12-22 | 南京律智诚专利技术开发有限公司 | A kind of disposable injection device with vacuum cavity |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4772265A (en) * | 1987-03-16 | 1988-09-20 | Walter Gregory W | Safety catheter |
| DK156414C (en) * | 1987-07-13 | 1990-01-22 | Gerda Ingrid Maria Gaarde | INJECTIVE SPRAY WITH CANNEL THAT CAN BE WITHDRAWED AND FIXED IN THE SPRAY |
| NZ228388A (en) * | 1988-03-22 | 1992-07-28 | Davsa Seventy Fifth Pty Ltd | Syringe with needle retractor |
| ES2009709A6 (en) * | 1989-01-24 | 1989-10-01 | Villar Pascual Jose Antonio | Single-use safety syringe |
-
1990
- 1990-01-09 IT IT01902890A patent/IT1238143B/en active IP Right Grant
-
1991
- 1991-01-04 AT AT91901792T patent/ATE130769T1/en not_active IP Right Cessation
- 1991-01-04 DE DE69114917T patent/DE69114917T2/en not_active Expired - Fee Related
- 1991-01-04 WO PCT/EP1991/000005 patent/WO1991010461A1/en active IP Right Grant
- 1991-01-04 JP JP3502227A patent/JPH04506469A/en active Pending
- 1991-01-04 US US07/752,533 patent/US5176640A/en not_active Expired - Fee Related
- 1991-01-04 EP EP91901792A patent/EP0462250B1/en not_active Expired - Lifetime
- 1991-01-04 CA CA002047677A patent/CA2047677A1/en not_active Abandoned
- 1991-01-04 AU AU70672/91A patent/AU7067291A/en not_active Abandoned
- 1991-01-08 CN CN91100886A patent/CN1055669A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0462250B1 (en) | 1995-11-29 |
| ATE130769T1 (en) | 1995-12-15 |
| CN1055669A (en) | 1991-10-30 |
| JPH04506469A (en) | 1992-11-12 |
| IT9019028A1 (en) | 1991-07-10 |
| AU7067291A (en) | 1991-08-05 |
| US5176640A (en) | 1993-01-05 |
| IT9019028A0 (en) | 1990-01-09 |
| IT1238143B (en) | 1993-07-09 |
| WO1991010461A1 (en) | 1991-07-25 |
| DE69114917T2 (en) | 1996-08-01 |
| DE69114917D1 (en) | 1996-01-11 |
| EP0462250A1 (en) | 1991-12-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |