WO2001012252A1 - Injection means - Google Patents
Injection means Download PDFInfo
- Publication number
- WO2001012252A1 WO2001012252A1 PCT/GB2000/003061 GB0003061W WO0112252A1 WO 2001012252 A1 WO2001012252 A1 WO 2001012252A1 GB 0003061 W GB0003061 W GB 0003061W WO 0112252 A1 WO0112252 A1 WO 0112252A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- needle
- block
- substance
- conduit
- syringe
- Prior art date
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
- A61M5/3287—Accessories for bringing the needle into the body; Automatic needle insertion
-
- 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
- A61M5/42—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 having means for desensitising skin, for protruding skin to facilitate piercing, or for locating point where body is to be pierced
- A61M5/422—Desensitising skin
Definitions
- This invention relates to improvements in devices for delivery of substances such as drugs, vaccines, fluorescent or magnetic material, and dyes into a surface, such as the skin of a human being, animal or other organic matter.
- the substance may be a solution, particulate fluid, or a paste, for example.
- a simple hypodermic syringe is the most well known although other mechanical arrangements, such as an auto-injector which are manually operated are well known.
- US Patent 5681283 discloses the use of a system in which needles are injected into the skin using elastic bands at a high velocity with the intention of making the injection "painless” and US Patent 5564436 discloses a pneumatically operated automatic rotating cassette with a plurality of stylets so that the higher velocity can reduce the pain of the injection.
- apparatus for injecting a substance into a surface which apparatus comprises a needle, a container for the substance to be injected, a means for applying the substance from the container to the tip of the needle, a means for driving the needle to penetrate the surface and deliver the substance thereto which means comprises a block slidably mounted in a conduit which block is accelerated by a controlled force to strike the needle assembly thereby inducing an acceleration of the needle to drive it into the surface.
- connection between the needle and the container which has sufficient flexibility to allow the needle to penetrate the skin without the connection being broken.
- the needle is directly attached to the container for the substance being injected and the needle and container move as one unit so the needle penetrates the surface.
- the present invention minimises the driven mass and so reduces or overcomes these problems.
- the volume of fluid should be less than 1ml e.g. mass of fluid should be less than 1 grm.
- the needle holder mass (together with fluid reservoir if included) i.e. the mass of the needle and associated moving parts is 0.01 to 5.0grm, more preferably 0.1 to 3grms and most preferably 0.2 to 0.6grm., with a typical mass being about O. ⁇ grms., this also means that the needle and other connected components have less kinetic energy and this reduces the risk of bruising etc. This is different to other techniques of injection, such as the injection of animals with tranquillising darts, when the needle penetrates the surface and forms part of, or is rigidly connected directly to a chamber containing the substance to be injected.
- the mass of the block is from 0.8 to 3 times the needle holder mass and more preferably from one to twice the mass.
- the present invention enables very high acceleration of the needle to be attained and the acceleration of the needle is preferably 1 to 20,000g.
- the block is made to move very straight along its axis and to strike the needle assembly squarely and centrally.
- the needle assembly preferably includes a guide to restrict lateral or transaxial movement and this also minimises flex.
- the needle driving means may include one or more of a leaf spring and stop arrangement, or a bistable spring or diaphragm arrangement.
- the needle driving means may include a mechanically hydraulic, pneumatic or electromechanically driven drive mechanism.
- a preferred driving means is pneumatically operated and comprises a block slidably mounted in a conduit so that application of a pneumatic force at one end of the conduit generates a pulse of gas e.g. air which will propel the block at speed down the conduit, so that it will strike a end piece, which is connected to the end of the needle.
- a pulse of gas e.g. air which will propel the block at speed down the conduit, so that it will strike a end piece, which is connected to the end of the needle.
- the block can be returned to its original position by reduction of pressure in the conduit. In this way one or more pulsed impulses can be applied to the end piece with the block being withdrawn back down the conduit between pulses.
- the block is positioned in contact with the source which generates the pulse of air so that the end of the block acts as a seal and is held in position with air pressure built up behind the block.
- a release mechanism When a release mechanism is operated the block is free to move and is propelled by the air pressure down the conduit.
- a preferred seal is for the end of the block to have a tapered shape and to fit into a corresponding shape at the end of tube connected to the pneumatic source so that the end of the block forms a tight seal.
- the end of the block acts as a plug valve and can form a tight fit and is held in position by frictional forces.
- the block is given a small push or nudge to overcome the frictional forces, whereupon the block moves down the conduit.
- the device can be primed ready for use with the block in place and air pressure built up behind the block ready for release.
- the end piece which is struck can be the end of the needle suitably reinforced if need be, or it can be an end piece or the like attached to or forming part of the needle.
- the end piece will normally have a flat end which is struck for ease of operation although this is not essential
- Suitable means for applying the pneumatic force include hand held bellows, pre- compressed gas, a piston with a spring return or a motorised means.
- the bellows can, for example be in the form of a sealed rubber chamber connected to the conduit. Another means of operating is by means of a pen injector which can be conveniently carried and used as required.
- the pneumatic force can also be generated by the generation of a gas by the evaporation of a liquid such as water or an organic liquid e.g. by an electrical heater so the gas formed propels the block down the conduit.
- This method using a reduction in pressure can be used on its own or in conjunction with the application of pneumatic force as described above, either sequentially or simultaneously.
- the needle can be driven into the skin until it is in contact with bone and then a blow is applied to the needle to drive it into the bone e.g. to inject into the bone marrow.
- the mass of the shuttle and needle holder should be sufficient to drive the needle through the bone to the required depth.
- the needle and block can be slidably connected together and spaced apart so that they are propelled down the conduit together and, when the needle enters the skin and stops, the block continues and strikes the end of the needle so that there is a double hit i.e. when the needle strikes and enters the skin and then when the block strikes the end of the needle and drives it further in.
- a valve and port arrangement known to those skilled in pneumatics, used with compressed gas drives the block towards the needle assembly.
- the valves exhaust the forward driving pressure and apply pressure in the reverse direction to the block. The reciprocating cycle is then repeated as often as required.
- part of the momentum of the moving block can be transferred to the syringe plunger to induce pressure which injects a quantity of the substance to be injected into the skin.
- a motorised means can be used to generate the pulse of air and subsequent reversal of pressure.
- the substance to be injected is contained in a reservoir fluidically connected to the needle and there are means to accelerate the needle independently without accelerating the reservoir. This means that there is less mass to be accelerated so it is easier to accelerate and to stop the needle.
- the feed of the substance to the needle can be discontinuous and synchronised to the time when the needle is beneath the skin so that a series of small volumes of the substance can be injected into the patient.
- the needle can be separate and adjacent to a syringe containing the substance to be delivered with one end of the needle flexibly connected to the end of the syringe by for example a flexible tube or by a coiled length of the needle so that rapid movement of the needle is not is not significantly inhibited by connection to the syringe.
- the needle is driven by the driving means until it has penetrated to the required depth and then the syringe is operated to inject the substance contained in the syringe through the needle into the surface.
- a syringe has a piston operating in the normal way with the needle projecting through the end of the syringe and the needle having an extension projecting through the piston so the end of the extension can be struck by a driving means to drive the needle into a surface, there being a connection means between the syringe and the needle whereby the substance in the syringe can pass through the needle from the syringe as the piston is depressed.
- the needle is placed against the surface and the end of the extension is struck as referred to above to drive the needle into the surface and then, when it has been driven into the required depth, the piston is depressed to inject the substance in the syringe into the surface.
- the needle is driven into the skin of the user by applying one or more impacts to the end of the needle to drive the needle into the skin to the desired depth and then the substance to be delivered is applied through the needle.
- a needle guide which can fit around the needle to assist in the location and positioning of the needle and keeps the needle exactly on line during the injection and reduces any risk of the needle bending.
- the guide can help guard against needle stick injury when the needle is withdrawn and can serve as a depth control.
- the mass which has to be accelerated to high velocities is much less than in other techniques which enables low energy to be used to propel the needle and makes it much easier to stop. It enables very high accelerations e.g. 1 to 20,000 g to be easily achieved by simple means.
- the pneumatic pressure required can be obtained by blowing down the conduit.
- the needles used can be blunter and it has been found that, for at least some applications, a blunter needle i.e. one which has a rounded or conical tip and which has no, or less sharp, cutting surfaces compared to a typical hypodermic needle or lancet can be used and this structure can cause less cutting of capillaries and bleeding.
- the needle is hollow with at least one aperture connecting to core directly adjacent to the tip to allow injections to be made at a depth optionally of less than lmm below the skin surface.
- the needle can have a substantially non-cutting tip with substantially no sharpened edges or blades with smooth, tapered, radiused or bevelled edges or surfaces.
- the needle can be conical or with a radiused point and one or more slots are present which connect the core to the exterior to allow, in use, delivery of the substance below skin surface and in which, when the needle is entering the skin, the one or more slots are substantially closed to prevent entry of external material or tissue into the core and when fluidic pressure is applied from the core to the exterior dimensions of the one or more slots increases to allow greater flow of fluidic substance.
- the one or more slots can be linear and parallel to the needle axis, inclined at an angle to the axis, spiral in form or are arranged to define a moveable flap which closes like a valve when external pressure is applied to the needle and opens like a valve when internal pressure is applied.
- the present invention is particularly useful for use with high speed injection methods for example when the needle has a velocity of 1 metre per second to 100 metres per second in order to penetrate the skin and deliver the substance thereto.
- the driving means drives the needle at a velocity of at 5 to 50 metres per sec, more preferably 6 to 35 metres per sec, or 10 to 20 metres per sec. e.g. 15 metres per sec.
- the reduction of bruising, bleeding etc. is also a great advantage and the present invention is particularly applicable for use with such people.
- the needle After injection the needle can then be withdrawn from the surface and it has been found that, in at least some applications, a relatively slow withdrawal of the needle can reduce the risk of bruising to the skin.
- needle withdrawal is improved by a rapid reverse acceleration of the needle, and this can be achieved by release of a compressed spring or reverse action of the moving block for example.
- the needle can be withdrawn from the surface into which it was injected.
- This feature is particularly useful in applications such as injecting through a finger nail when, with conventional syringes the needle can be jammed in the nail and can be difficult to remove e.g. pliers have to be used to pull the needle out.
- the apparatus of the present invention can also be used to aspirate.
- a tube and pneumatic drive was used to accelerate a block at 0.4g to a velocity of 5 - 15 metres per sec.
- the needle contained a lateral hole adjacent to the tip and was driven 10mm into the skin of the arm with no pain, was able to deliver a small quantity of sterile saline to the skin and left no blood or bruising on withdrawal.
- Fig. 1 is one embodiment of the invention and Fig. 2 is another embodiment of the invention.
- a syringe (10) has a piston (1) mounted within it which can be depressed by handle (2). There is an outlet (4) from the syringe so that, when piston (1) is depressed, a substance in the body of the syringe (3) is forced out through the outlet (4). Attached to the outlet by a Luer connector (5) is one end of needle (13).
- the needle (13) is flexible and fixed to a holder (6) the needle can be a zig-zag shape or it can be coiled as shown in figs, la and lb.
- a striker plate (8) which is the end piece to needle (13) and is slidably mounted within conduit (9), there is block (20) positioned in the conduit.
- the end A of the conduit (9) is connected to pneumatic pump or the like so that air under pressure can enter the conduit and propel the block (20) down the conduit to strike plate (8). Reversal of the direction of the air in the conduit will cause the block (20) to be sucked back to the end of the conduit.
- the substance to be injected is placed in the syringe (10) and the one or more blocks (20) are at the end of conduit (9) remote from the end of the needle (7).
- the end of the needle (7) is placed against the surface to be injected and a pulse of high pressure air is sent down conduit (9) so as to propel the one or more block (20), at the required high speed i.e. above 1 metre per sec, down conduit (9) to strike plate (8).
- the needle is then driven into the surface and an impact made on the plate (8) and the needle penetrates the surface.
- the piston (1) in the syringe (10) is depressed and the substance in the syringe is injected into the surface.
- a syringe (24) has a needle (27) attached to one end and the needle has one or more openings near the tip (27) outside the syringe end seal (31) and the needle has further openings along shaft (23) lying inside the syringe end seal whereby a substance in the syringe can enter the needle.
- An extension (28) to the needle (27) passes slidably and sealably through the piston (25) and terminates in a striker plate (29).
- the striker plate is positioned in conduit (30) down which blocks can be propelled pneumatically to strike plate (29).
- the syringe In use the syringe is filled with the substance to be injected and the needle (27) is placed against the surface, a block or blocks are propelled down conduit (30) in a similar way to that described for Figure 1 and striker plate (29) and so drive the needle into the surface. When the needle has penetrated the surface to the required depth the piston (25) is depressed and the substance injected into the surface.
- the substance may be a traditional tattoo dye, a temporary dye, a drug, a gene therapy substance, a particulate substance, for example.
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (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
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002380861A CA2380861A1 (en) | 1999-08-13 | 2000-08-14 | Injection means |
IL14788600A IL147886A0 (en) | 1999-08-13 | 2000-08-14 | Injection means |
BR0013321-3A BR0013321A (en) | 1999-08-13 | 2000-08-14 | Apparatus for injecting a substance onto a surface, method of releasing a substance through the use of an apparatus |
AU64578/00A AU6457800A (en) | 1999-08-13 | 2000-08-14 | Injection means |
EP00951722A EP1202761A1 (en) | 1999-08-13 | 2000-08-14 | Injection means |
JP2001516594A JP2003507094A (en) | 1999-08-13 | 2000-08-14 | Injection means |
NO20020690A NO20020690L (en) | 1999-08-13 | 2002-02-11 | Injeksonsanordning |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9919218.9 | 1999-08-13 | ||
GBGB9919218.9A GB9919218D0 (en) | 1999-08-13 | 1999-08-13 | Injection means |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001012252A1 true WO2001012252A1 (en) | 2001-02-22 |
Family
ID=10859159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2000/003061 WO2001012252A1 (en) | 1999-08-13 | 2000-08-14 | Injection means |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1202761A1 (en) |
JP (1) | JP2003507094A (en) |
AU (1) | AU6457800A (en) |
BR (1) | BR0013321A (en) |
CA (1) | CA2380861A1 (en) |
GB (1) | GB9919218D0 (en) |
IL (1) | IL147886A0 (en) |
NO (1) | NO20020690L (en) |
WO (1) | WO2001012252A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005102423A1 (en) | 2004-04-23 | 2005-11-03 | Imprint Pharmaceuticals Limited | Needles |
US7785876B2 (en) | 2002-11-14 | 2010-08-31 | Aderans Research Institute, Inc. | Cultivation of hair inductive cells |
CN112402741A (en) * | 2020-10-09 | 2021-02-26 | 杭州远滴科技有限公司 | Intermittent clutch type injection medicine driving device with automatic induction unit |
CN113041456A (en) * | 2021-03-04 | 2021-06-29 | 谭淑 | Emergency syringe |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1709989A1 (en) * | 2005-04-04 | 2006-10-11 | Christoph Burckhardt AG | Tattoo machine |
JP4997456B2 (en) * | 2006-04-27 | 2012-08-08 | 有限会社リバー精工 | Endoscopic syringe |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH328609A (en) * | 1954-12-04 | 1958-03-15 | Dunmire Russell P | Hypodermic syringe |
FR1215970A (en) * | 1958-12-08 | 1960-04-21 | Hypodermic syringe tip and needle device | |
DE3405671A1 (en) * | 1984-02-17 | 1985-08-22 | Sandoz AG, 8500 Nürnberg | Device for setting up and maintaining the gas pressure in a vaccination gun operated with a high-pressure gas |
WO1992020388A1 (en) * | 1991-05-13 | 1992-11-26 | Sti International Limited | Automatic injectors |
WO1995029720A1 (en) * | 1994-04-28 | 1995-11-09 | Pa Consulting Services Ltd. | Safety injection device |
WO2000009184A1 (en) * | 1998-08-13 | 2000-02-24 | Imprint Pharmaceuticals Limited | Apparatus for delivering a substance having one or more needles driven at high velocity |
-
1999
- 1999-08-13 GB GBGB9919218.9A patent/GB9919218D0/en not_active Ceased
-
2000
- 2000-08-14 AU AU64578/00A patent/AU6457800A/en not_active Abandoned
- 2000-08-14 EP EP00951722A patent/EP1202761A1/en not_active Withdrawn
- 2000-08-14 CA CA002380861A patent/CA2380861A1/en not_active Abandoned
- 2000-08-14 BR BR0013321-3A patent/BR0013321A/en not_active Application Discontinuation
- 2000-08-14 WO PCT/GB2000/003061 patent/WO2001012252A1/en not_active Application Discontinuation
- 2000-08-14 IL IL14788600A patent/IL147886A0/en unknown
- 2000-08-14 JP JP2001516594A patent/JP2003507094A/en not_active Withdrawn
-
2002
- 2002-02-11 NO NO20020690A patent/NO20020690L/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH328609A (en) * | 1954-12-04 | 1958-03-15 | Dunmire Russell P | Hypodermic syringe |
FR1215970A (en) * | 1958-12-08 | 1960-04-21 | Hypodermic syringe tip and needle device | |
DE3405671A1 (en) * | 1984-02-17 | 1985-08-22 | Sandoz AG, 8500 Nürnberg | Device for setting up and maintaining the gas pressure in a vaccination gun operated with a high-pressure gas |
WO1992020388A1 (en) * | 1991-05-13 | 1992-11-26 | Sti International Limited | Automatic injectors |
WO1995029720A1 (en) * | 1994-04-28 | 1995-11-09 | Pa Consulting Services Ltd. | Safety injection device |
WO2000009184A1 (en) * | 1998-08-13 | 2000-02-24 | Imprint Pharmaceuticals Limited | Apparatus for delivering a substance having one or more needles driven at high velocity |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7785876B2 (en) | 2002-11-14 | 2010-08-31 | Aderans Research Institute, Inc. | Cultivation of hair inductive cells |
WO2005102423A1 (en) | 2004-04-23 | 2005-11-03 | Imprint Pharmaceuticals Limited | Needles |
CN112402741A (en) * | 2020-10-09 | 2021-02-26 | 杭州远滴科技有限公司 | Intermittent clutch type injection medicine driving device with automatic induction unit |
CN112402741B (en) * | 2020-10-09 | 2023-05-05 | 杭州远滴科技有限公司 | Intermittent clutch type injection medicine driving device with automatic sensing unit |
CN113041456A (en) * | 2021-03-04 | 2021-06-29 | 谭淑 | Emergency syringe |
CN113041456B (en) * | 2021-03-04 | 2022-11-25 | 深圳市天道医药有限公司 | Emergency syringe |
Also Published As
Publication number | Publication date |
---|---|
AU6457800A (en) | 2001-03-13 |
NO20020690L (en) | 2002-04-10 |
EP1202761A1 (en) | 2002-05-08 |
CA2380861A1 (en) | 2001-02-22 |
BR0013321A (en) | 2002-10-08 |
IL147886A0 (en) | 2002-08-14 |
JP2003507094A (en) | 2003-02-25 |
GB9919218D0 (en) | 1999-10-20 |
NO20020690D0 (en) | 2002-02-11 |
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