WO1999010036A1 - Subcutaneous infusion set with dynamic needle - Google Patents
Subcutaneous infusion set with dynamic needle Download PDFInfo
- Publication number
- WO1999010036A1 WO1999010036A1 PCT/US1998/017787 US9817787W WO9910036A1 WO 1999010036 A1 WO1999010036 A1 WO 1999010036A1 US 9817787 W US9817787 W US 9817787W WO 9910036 A1 WO9910036 A1 WO 9910036A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- base
- patient
- cannula
- end portion
- 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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
- A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
-
- 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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/148—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons flexible, e.g. independent bags
- A61M5/152—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons flexible, e.g. independent bags pressurised by contraction of elastic reservoirs
-
- 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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- 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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M2005/1581—Right-angle needle-type devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S128/00—Surgery
- Y10S128/26—Cannula supporters
Definitions
- the present invention relates generally to fluid delivery devices More particularly, the invention concerns a subcutaneous infusion set with dynamic needle for interconnection with a source of medicinal fluid to enable subcutaneous delivery ot the medicinal fluid to a patient.
- Subcutaneous injection sites are well know in the ait for delivering selected medications to a desired subcutaneous site located beneath the skin of a patient
- mjection sites comprise a relatively short catheter which is supported by a housing that is suitably interconnected with an external source of the medicament to be delivered to the patient
- U S Patent No 4,380.234 issued to Kamen Another p ⁇ or art subcutaneous infusion set of different construction is illustrated and described in U S Patent No. 5,527.288 issued to Gross et al
- Still a differently constructed subcutaneous infusion set is described in U S. Patent No 5,176,662 issued to Bartholomew et al
- the catheter is rigidly connected to a base and extends generally perpendicularly outward therefrom
- the base of the device is affixed to the patient's body by means of tape, an adhesive patch or the like.
- the thrust of the present invention is to overcome the drawbacks of the p ⁇ or art subcutaneous injection devices by providing an injection site wherein the cannula is dynamically mounted to the base of the device in a manner such that normal movement by the patient will permit the cannula to move three dimensionally within a cavity formed in the base while the base itself remains completely stationary
- a novel subcutaneous infusion set of the aforementioned character which includes a novel and unique, generally spiral shaped delivery cannula having a body portion disposed within a chamber formed withm the base superstructure of the apparatus and a pierceable portion which extends angularly outwardly from the base of the apparatus
- Another object of the invention is to provide an infusion set of the character described in the precedmg paragraphs in which, following interconnection of the device with a patient, normal movement by the patient will permit the cannula to move dynamically within the internal chamber while the base of the device remains completely stationary.
- Another object of the invention is to provide, in combination with a novel subcutaneous infusion set of the character described, a novel fluid delivery apparatus which is compact, is of an extremely low profile and one which includes a self-contained stored energy membrane for expelling fluids toward the infusion set at a precisely controlled rate of flow.
- a further object of the invention is to provide a low profile, fluid delivery device of the character described which includes a novel elastomeric membrane energy source which is of laminate construction and which can meet even the most stringent fluid delivery tolerance requirements.
- Another object of the invention is to provide an apparatus of the character described which, due to its unique construction, can be manufactured inexpensively in large volume by automated machinery.
- Figure 1 is a generally perspective view of one form of the subcutaneous infusion set with dynamic needle of the present invention.
- Figure 2 is a top plan view of the infusion set illustrated in Figure 1 and shown interconnected with a quick coupler element for coupling the device with a source of medicament.
- Figure 3 is a cross-sectional view taken along lines 3-3 of Figure 2.
- Figure 4 is a cross-sectional view taken along lines 4-4 of Figure 2
- Figure 5 is a cross-sectional view taken along lines 5-5 of Figure 2.
- Figure 6 is a bottom plan view of the infusion set shown in Figure 1 and illustrating the manner in which the peel-off paper is peeled from the patient-engaging lower surface of the device
- Figure 7 is a cross-sectional, exploded view similar to Figure 3 but showing the removal of the protective cap assembly of the apparatus from the downwardly extending needle portion of the mfusion set
- Figure 8 is an enlarged, cross-sectional view of the area designated in Figure 7 by the numeral 8
- Figure 9 is a fragmentary, side-elevational view, partly in cross section of an alternate coupling element (a standard female luer) of the apparatus of the invention
- Figure 10 is a top plan view ot an alternate embodiment of the invention which comprises in combination a subcutaneous infusion set and a novel fluid delivery device for dehvermg medicament to the infusion set at a precise rate
- Figure 11 is a front view of the fluid delivery device shown in Figure 10
- Figure 12 is a cross-sectional view taken along lines 12 12 of Figure 10
- Figure 13 is a generally illustrative perspective view showing the apparams of this latest form of the invention attached to a patient
- Figure 14 is an enlarged cross-sectional view ot the subcutaneous infusion set portion of the apparatus shown in Figure 13 illustrating the interconnection with the patient
- Figure 15 is an enlarged fragmentary view of the area identified in Figure 14 by the numeral 15
- Figure 16 is a generally perspective view of the generally spiral shaped cannula of the subcutaneous infusion set portion of the apparams
- one form of the subcutaneous infusion device of the invention for infusing medicinal fluids into a patient is there shown and generally identified by the numeral 12
- the device of this form of the mvention comprises a base 14 having upper and lower surfaces 14a and 14b and a generally circular shaped opening 16 ( Figures 2 and 4) Connected to upper surface 14a of base 14 is a cover 18 havmg a generalK dome-shaped portion 18a.
- a flange portion 18b and a stem portion 18c Removably receivable within opening 16 is a generally dome-shaped closure assembly 20 which includes an outer wall 22 which terminates in a generally cylind ⁇ callv shaped skirt portion 22a Formed internally of wall 22 is a mbular-shaped. socket-like portion 24 ( Figures 2 and 4), the purpose of which will presently be described
- Cannula 30 includes a circuitously shaped body poraon 30a which is disposed within chamber 26 and a stem portion 30b which is mounted within stem portion 18c of cover 18 in a manner presently to be described
- Cannula 30 also includes an outlet end, here provided in the form of a needle-like segment 30c, which extends generally perpendicularly downward from lower surface 14b of base 14 for subdermal infusion ot medicinal fluids mto the patient
- segment 30c is provided with a sharp, pointed extremity 30d (see Figure 3)
- a protective sheath 32 As also shown in Figure 3, a protective sheath 32.
- stem portion 30b of the very small diameter spiral cannula 30 is encased withm the inboard end 38a of a fluid delivery tube 38 and the assembly thus formed is uniquely supported between stem portion 18c of cover 18 and a concave segment 14c of base 14 by a cannula encapsulation means shown here as a standard pottmg compound 40.
- Compound 40 rigidly supports the inboard end of mbe 38 and portion 30b of the cannula so as to provide a secure interconnection with base 14 and cover 18.
- portion 30b of the cannula is provided with a bend 30e to better secure the assemblage in place.
- a quick connect member 42 which is usable with a standard type of male connector element to enable interconnection of the delivery tube 38 with a source of medicament ( Figures 2 and 3).
- Quick connect member includes a locking lever 42a and a locking surface 42b ( Figure 2) adapted for locking engagement with the male connector element.
- An alternate form of connector a standard female luer usable with the device is shown in Figure 9 and is generally designated by the numeral 43.
- closure assembly 20 is separated from base 14 and protective sheath 32 is slipped from end 30c of cannula 30.
- the protective membrane covering 44 which protects the adhesive coating 46 provided on the lower surface 14b of base 14 is removed (see Figures 5 and 6).
- the device can be interconnected with the patient by penetrating the patient's skin with the point 30d of the fusion cannula 30 As the infusion needle penetrates the patient's skm and tissue, the adhesive coated lower surface of base 14 will engage the patient's skin so as to hold the device securely in position.
- the patient's arm or leg normal movement by the patient will permit the cannula to move within chamber 26 while the base remains completely stationary Without this important feature, normal movements by the patient causing flexing of the muscle and tissue would cause lr ⁇ tation and discomfort to the patient Additionally, such movements could cause the small diameter cannula to fail catastrophically or could cause loosening of the adhesive bond which would result in separation of the device from the patient's skin
- the novel and umque dynamic mounting of the cannula within chamber 26 positively prevents breaking of the frangible cannula and at the same time prevents irritation to the patient as a result of normal muscle flexing by the patient
- an alternate embodiment of the invention is there shown and generally designated by the numeral 50
- the apparams of this latest form of the invention comprises, in combination, a subcutaneous infusion set 12 of the character previously described and a novel fluid delivery device 51 for delivering fluids to the infusion set at a precise rate of flow
- the subcutaneous infusion set poraon ot the apparatus is of identical construction to that shown m Figures 1 through 8 and like numerals have been used m Figures 10 through 16 to identify like components
- the fluid delivery device is similar in some respects to the device described in U S Patent No 5,169.389 issued to the present inventor Because of the pertinence of this patent, Patent No 5,169,389 is hereby incorporated herein by reference as though fully set forth herem As best seen by referring to Figures 10, 11.
- the fluid delivery device portion 51 of the apparams comprises a base 52, havmg an upper surface 54 including a central portion 54a and a peripheral portion 54b circumscribing central poraon 54a
- base 52 is provided with a lower surface 56 to which a patient interconnection means or member 58 is connected
- Member 58 functions to releasably interconnect the device to the patient and includes an adhesive layer 60 which is initially protected by a peel-away membrane 62
- Laminate construction 64 is similar to that described in U S Patent No 5,169.389 which is incorporated herein by reference and is distendable as a result of pressure imparted on the construction by fluids "F" introduced into a fluid reservoir 70 through an inlet port 72 ( Figure 10)
- cover 74 is superimposed over membranes 66 and 68 and is affixed to base 52 in a suitable manner such as by adhesive or some bonding
- a septum assembly 78 mounted in base 54
- Septum assembly 78 includes a conventional pierceable septum 80 which is carried within a housing 82 that is connected to base 54
- fluid can be introduced into a fluid passageway 84 which terminates in the previously identified fluid inlet port 72
- membranes 66 and 68 will distend outwardly as a umt toward the inner surface 74a of cover 74 m the manner best seen in Figure 12
- a fluid outlet port 86 which is in communication with an outlet passageway 88
- Outlet passageway 88 terminates in a fluid outlet 90 formed in a male connector element or protuberance 92 which is adapted to lockably receive quick connect member 42 of the subcutaneous infusion set of the apparams
- Interconnection ot quick connect member 42 with connector protuberance 92 places reservoir 70 in fluid communication with spiral cannula 30 via delivery mbe 38 (see Figures 10 and 11)
- the subcutaneous infusion device 12 which forms a part of the apparams of this latest form of the invention, is of identical construction to that shown m Figures 1 through 8
- the device comprises a base 14 and a cover 18 which together define an internal chamber 26 within which a generally spiral shaped cannula 30 is dynamically mounted in the manner previously described
- reservoir 70 is in fluid communication with the internal bore 30f ( Figure 8) of cannula 30 via delivery mbe 38 and fluid passageway 88 formed in base 52
- the infusion device 12 Either before or after the infusion device 12 is suitably interconnected with the fluid delivery device 51.
- the fluid to be delivered to the patient is introduced into reservoir 70 usmg a conventional syrmge
- the closure assembly 20 is then separated from base 14 and protective sheath 22 is slipped from end 30c of cannula 30
- the protective membrane covermg 44 which is provided on the lower surface of the base and which protects the adhesive coatmg, is removed (see Figures 5 and 6)
- the device is interconnected with the lower abdomen of the patient by penetrating the patient's skin "S" with the point 30d of the infusion cannula 30 (see Figure 14) As the patient's skin and tissue is penetrated by the infusion needle in the manner shown in Figures 14 and 15.
- the adhesive coated lower surface of base 14 will engage the patient's skin to hold the device securely in position.
- the unique dynamic mounting of the cannula within chamber 26 positively prevents breaking of the frangible cannula and at the same time prevents irritation to the patient as a result of normal muscle flexing by the patient.
- the peel strip 62 is removed from the base 52 of the delivery device and the delivery device is affixed to the patient's upper abdomen in the manner shown in Figure 13 with the fluid reservoir 70 in communication with cannula 30, as the distendable membrane laminate 64 tends to return to its less distended starting position, the fluid "F" contained within reservoir 70 will be urged outwardly of the reservoir into passageway 88 via fluid outlet 86. The fluid will then flow through outlet 90 of the promberance 92, into delivery mbe 38, into bore 30f of the cannula 30 and then into the patient at a flow rate determined by the character of elastomeric membranes 66 and 68 which make up the laminate 64.
- Distendable membranes 66 and 68 can be manufactured from several alternate materials including rubbers plastics and other thermoplastic elastomers. These include latex rubber, polyisoprene (natural rubber), butyl rubber, nitrile rubber, other homopolymer, copolymers (random, alternating, block, graft, crosslink and starblock), mechanical poly-blends and interpenetrating polymer networks. Examples of materials found particularly well suited for this application include: silicone polymers (polysiloxanes), high performance silicone elastomers made from high molecular weight polymers with appropriate fillers added. These materials are castable into thin film membranes and have high permeability (which allows maximum transport of vapor and gas), high bond and tear strength and excellent low temperature flexibility and radiation resistance.
- rubbers plastics and other thermoplastic elastomers include latex rubber, polyisoprene (natural rubber), butyl rubber, nitrile rubber, other homopolymer, copolymers (random, alternating, block,
- a wide variety of materials can be used, including: metals, rubber or plastics that are compatible with the liquids they contact and are preferably not non-allergenic.
- materials are stainless steel, aluminum, latex rubber, butyl rubber, nitrile rubber, polyisiprene, styrene-butadiene copolymer, silicones, polyolefins such as polypropylene and polyethylene, polyesters, polyurethan, polyamides and polycarbonates.
- suitable materials include: Dow Corning of Midland, Michigan; General Electric of Schenectady, New York and Shell Chemical Company of Houston. Texas.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98941090A EP1019135A4 (en) | 1997-08-27 | 1998-08-27 | Subcutaneous infusion set with dynamic needle |
JP2000507423A JP2001513408A (en) | 1997-08-27 | 1998-08-27 | Subcutaneous infusion set with dynamic injection needle |
AU89233/98A AU8923398A (en) | 1997-08-27 | 1998-08-27 | Subcutaneous infusion set with dynamic needle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/919,146 US5858005A (en) | 1997-08-27 | 1997-08-27 | Subcutaneous infusion set with dynamic needle |
US08/919,146 | 1997-08-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999010036A1 true WO1999010036A1 (en) | 1999-03-04 |
Family
ID=25441586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1998/017787 WO1999010036A1 (en) | 1997-08-27 | 1998-08-27 | Subcutaneous infusion set with dynamic needle |
Country Status (5)
Country | Link |
---|---|
US (1) | US5858005A (en) |
EP (1) | EP1019135A4 (en) |
JP (1) | JP2001513408A (en) |
AU (1) | AU8923398A (en) |
WO (1) | WO1999010036A1 (en) |
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Also Published As
Publication number | Publication date |
---|---|
AU8923398A (en) | 1999-03-16 |
EP1019135A4 (en) | 2003-05-21 |
US5858005A (en) | 1999-01-12 |
EP1019135A1 (en) | 2000-07-19 |
JP2001513408A (en) | 2001-09-04 |
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