WO2005118055A1 - Katheterkopf mit bewegbarem konnektor - Google Patents
Katheterkopf mit bewegbarem konnektor Download PDFInfo
- Publication number
- WO2005118055A1 WO2005118055A1 PCT/EP2005/005700 EP2005005700W WO2005118055A1 WO 2005118055 A1 WO2005118055 A1 WO 2005118055A1 EP 2005005700 W EP2005005700 W EP 2005005700W WO 2005118055 A1 WO2005118055 A1 WO 2005118055A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connector
- catheter head
- cannula
- connection
- fluid
- 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
- A61M5/158—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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/04—Access sites having pierceable self-sealing members
-
- 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
-
- 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
- A61M2005/1587—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body suitable for being connected to an infusion line after insertion into a patient
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/19—Constructional features of carpules, syringes or blisters
- A61M2205/192—Avoiding coring, e.g. preventing formation of particles during puncture
- A61M2205/197—Avoiding coring, e.g. preventing formation of particles during puncture by the seal material
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/06—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof
- A61M39/0606—Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof without means for adjusting the seal opening or pressure
Definitions
- the invention relates to a catheter head for medical, preferably therapeutic, and pharmaceutical applications.
- the catheter head can in particular be part of an infusion set or form an infusion set together with a catheter and / or one or more other fluid-carrying elements. It is preferably used for the subcutaneous administration of a medicinal liquid such as insulin. It is particularly preferably used in self-administration.
- Catheter heads which are part of an infusion set are known from the prior art.
- EP 0 239 244 B1 discloses an injection set for subcutaneous injection.
- the centerpiece of the injection set is a catheter head.
- This catheter head comprises a supply line for the product to be injected, a flexible cannula that protrudes from the catheter head, and an injection needle connection.
- a puncture needle is inserted into the catheter head through the puncture needle connection and through the flexible cannula in order to insert it into the patient's tissue.
- the injection needle pierces a septum at the injection needle connection.
- the injection needle After the flexible cannula has been inserted into the patient's tissue by means of the injection needle, the injection needle is pulled out of the catheter head. The septum closes the catheter head at the injection needle connection. A tight connection is now established between the cannula located in the tissue and a feed for the product. However, due to the puncture of the septum at the injection needle connection, there is a residual risk that the connection will not seal completely. This applies in particular if the septum is pierced several times at the injection needle connection.
- a catheter head according to the invention for medical, preferably therapeutic or also diagnostic, and pharmaceutical applications comprises a catheter head housing, a cannula, which is preferably flexible, a fluid connection, a fluid channel, an injection needle connection, a connection chamber and a connector.
- the catheter head housing gives the catheter head strength and holds the individual components of the catheter head together. It is possible to integrate individual components of the catheter head into the catheter head housing.
- the cannula protrudes from the catheter head and, when inserted, into organic tissue. A region of the cannula is preferably accommodated in the catheter head housing. In such designs, the cannula protrudes from the catheter head housing.
- the fluid connection of the catheter head is used to connect a fluid supply, which connects a container containing a fluid to be administered to the catheter head.
- the container can for example be designed as an ampoule of a portable infusion device, other embodiments are also possible.
- a fluid is preferably understood to mean a liquid product, but the fluid can also be gaseous.
- the fluid supply is preferably guided into the fluid channel and preferably held in a form-fitting manner on the catheter head housing.
- the fluid supply comprises a supply cannula with a connecting needle. This needle is inserted into the fluid channel of the catheter head to establish a fluid connection between the catheter head and the container.
- the fluid channel in the catheter head is a flow section of the catheter head through which the fluid flows when administered.
- the injection needle connection of the catheter head is used to connect an injection needle. Through this connection, the injection needle is inserted into the catheter head housing and through this into the cannula.
- the injection needle connection can be open or closed by a soft material that can be pierced by the injection needle. However, the injection needle connection itself has no sealing function after removal of the injection needle.
- the cannula, the injection needle connection and the fluid channel of the catheter head adjoin the connection chamber of the catheter head.
- the connecting chamber forms a volume through which the fluid flows at least partially when the fluid is administered.
- the geometry of the connecting chamber can be rectangular, for example cubic, but it can also be round or irregular in shape. In particular, the borders or connections to the cannula, the injection needle connection and the fluid channel can be formed in the walls of the connection chamber.
- connection for the cannula and the injection needle connection are preferably opposite one another in a straight line.
- the fluid channel preferably adjoins the connecting chamber on a remaining lateral chamber wall.
- the volume of the connection chamber can be kept constant during the insertion of the injection needle and later when the fluid is administered, but it is preferred that the volume of the connection chamber changes or that other components of the catheter head, preferably the connector, move into the connection chamber can be.
- the connector is movably supported by the catheter head housing at least between two different positions.
- the connector In a first position, the connector is arranged in such a way that the injection needle can be guided from the injection needle connection into the connection chamber and this can be guided in a protruding manner into the cannula.
- the connector does not hinder the injection needle in the first position.
- At least the injection needle does not pierce it. It preferably does not cross it either, and the injection needle and the connector particularly preferably have no contact in its first position.
- the connector In a second position, the connector is arranged such that, after removal of the injection needle, it fluidly separates the cannula from the injection needle connection when the fluid supply is connected to the fluid connection. It advantageously closes the connecting chamber in a sealing manner towards the injection needle connection.
- the connector arranged on the catheter head housing creates a fluid-tight connection between the fluid supply and the cannula due to the fluidic separation. Therefor a part of the connector or the connector as a whole is moved, preferably displaced, relative to the catheter head housing, preferably in the connecting chamber.
- the connector can be made in one part or in several parts. It can be made entirely from the same material everywhere or from different materials in some areas.
- the connector preferably has a round or square cross-section, but other cross-sectional shapes are also possible.
- the connector is preferably locked in the second position. This increases the security that the connection chamber is sealed by the connector towards the injection needle connection.
- the connector can e.g. B. not accidentally slip. It is also possible that the locking of the connector in the second position prevents reuse, which could result in infections for a user of a catheter head.
- the connector latches in the second position.
- the connector is preferably provided with a blocking device, for example a hook, at that end of the connector which adjoins the connecting chamber, which prevents the connector from moving back from the second position by engagement preferably with a part of the catheter head housing.
- a blocking element that moves into a blocking engagement for blocking the connector in the second position can be provided instead of on the connector or additionally on the catheter head housing.
- the movement of the one or more blocking elements into the blocking engagement is preferably brought about by elastic forces.
- the movement into the blocking engagement can also be brought about by a gear mechanism which brings about the relative movement between the connector and the catheter head housing in the blocking engagement.
- a blocking element which is elastically tensioned until the second position of the connector is reached automatically snaps into a rear grip with a when the second position is reached on account of its elastic restoring force Blocking counter element and thus blocks the connector against movement from the second position.
- the movement of the connector is a displacement of the connector.
- This shift is preferably of a purely translational nature.
- the catheter head housing and the connector form a thrust joint.
- a rotary movement is superimposed on this movement or that the movement of the connector consists exclusively of a rotary movement.
- the catheter head housing and the connector form a swivel joint or possibly a thrust / swivel joint.
- the rotational movement can be, for example, a folding movement or a swiveling movement.
- the cause of the movement of the connector is preferably a force which acts mechanically on the connector.
- the catheter head housing preferably guides the connector linearly along an axis of movement as it moves.
- its fluid supply is preferably moved along the same axis relative to the catheter head housing.
- the catheter head housing preferably forms a sliding guide for the connector, preferably also for the fluid supply.
- the catheter head housing guides the connector not only linearly along the movement axis, but also secured against rotation with respect to this axis during its movement. This is particularly advantageous if a passage of the connector, which in the second position connects the fluid channel formed by the connector to the cannula, is formed in a lateral surface of the connector, as is preferred.
- the anti-rotation lock is formed by appropriate shaping of the mating outer surfaces of the connector and the catheter head housing created.
- the guide can be formed, for example, by the engagement of a guide web in a guide groove. However, it can advantageously also be obtained by a polygonal, preferably rectangular, or oval outer cross section of the connector and an inner jacket surface of the catheter head which is shaped in a manner adapted for the purpose of non-twisting guidance.
- the movement of the connector from the first to the second position is coupled with the connection of the fluid supply for the container. Without the container connected, the connector is in the first position. However, if the container is connected, the connector is automatically and inevitably in the second position.
- the connection preferably effects the movement of the connector.
- the connector protrudes beyond the catheter head housing in the region of the fluid connection in the first position and is moved from the fluid supply into the second position when the fluid supply is connected.
- it When trying to connect the fluid supply, it preferably comes into contact with the connector and exerts a force on it. This force sets the connector in motion and moves from the first position to the second position.
- the movements of the fluid supply and the connector are preferably rectified when connecting.
- the fluid supply preferably presses against the connector and thus causes it to move into the second position. Part of the fluid supply is pushed and / or rotated in or preferably onto the catheter head housing.
- the movement of the fluid supply preferably ends at the moment when the fluid supply or / and the connector has reached a stop. In a preferred embodiment, reaching this stop is synchronized with reaching the second position of the connector.
- the movement of the connector is the pulling out of the injection needle from the injection needle connection coupled.
- the connector therefore performs its sealing function immediately when or after the injection needle is pulled out of the injection needle connection.
- moving the connector requires separate actuation.
- This separate actuation can, for example, cause the movement of the connector in a mechanical and or electrical manner.
- the fluid channel is closed off from the fluid connection by a septum.
- This septum guarantees a tight and hygienic closure of the fluid channel from the environment.
- the septum is preferably pierced by means of a connecting needle of the fluid supply in order to establish the fluid connection between the container and the fluid channel.
- the connector can form such a septum itself in one piece or hold a separately shaped septum.
- the connector is designed as a hollow body.
- the cross section of the cavity can be round, for example circular or oval, or polygonal, for example square, but the hollow body can also be irregular.
- the fluid channel runs inside the connector and is moved accordingly when the connector moves.
- the fluid channel can run entirely or partially within the connector.
- the connector has a passage for the fluid, the passage being closed in the first position of the connector, preferably by a wall of the catheter head housing, and the passage being open towards the cannula in the second position of the connector.
- the passage is preferably located at a location on the lateral surface of the connector designed as a hollow body. In the second position, the passage is preferably located directly at the opening of the cannula to the connecting chamber.
- the connector has an opening in the first position towards the connecting chamber. This opening is sealed in the second position of the connector. This opening of the connector is preferably located at its front end in the direction of movement. In the case of a symmetrical connector, one of its main axes preferably runs through this opening.
- the opening can encompass the entire head surface of the cylinder. However, the opening can only occupy part of this area.
- the opening in the second position of the connector preferably borders directly on the catheter head housing; the sealing effect is preferably formed by the seal between the surfaces of the connector surrounding the opening and the catheter head housing. It is preferably a hard / soft seal.
- the fluid channel runs outside the connector, and the position of the fluid channel with respect to the catheter head housing cannot be changed.
- the connector is preferably compact and has no cavities. However, this does not exclude minor indentations in the connector. If the connector is moved between its two positions, this has no influence whatsoever on the position of the fluid channel with respect to the catheter head housing.
- the fluid channel is preferably firmly integrated into the catheter head housing d. H. the walls of the fluid channel are formed by the catheter head housing.
- the fluidic separation of the cannula and the injection needle connection can be brought about by a soft / soft seal.
- a hard / soft seal is preferably used as a seal for the fluidic separation of the cannula and the injection needle connection.
- This type of seal can advantageously be reinforced by a suitable form fit of the elements to be connected to one another in a sealing manner. In particular, it makes sense to press the components together or against one another. B. can be achieved by suitable shaping of the components.
- the connector may have a harder area and a softer area, the softer area in the second position of the connector providing the seal against the relatively harder catheter head housing. This softer area of the connector can be shaped in various ways.
- the softer area can, for example, be designed to run around the connector.
- the softer area can, for example, be enclosed by the harder area in partial areas.
- the softer area can also have only a simple cuboid shape. In all cases, the softer area comes into direct contact with the harder catheter head housing and creates a seal there.
- the catheter head comprises a cannula head which surrounds the cannula at the connection chamber, the connector consisting of a hard base body and the cannula head made of a softer material, so that in the second position of the connector a hard / soft seal between the hard body and the softer cannula head is formed.
- the hard base body of the connector here preferably has a passage which, in the second position of the connector, lies above the cannula head in such a way that a fluid connection can be established between the cannula and the fluid channel in the connector.
- the connector is preferably designed as a hollow body.
- the soft sealing part can also be a sealing insert or a coating with an opening which is only connected to the cannula via a further channel, but a cannula head provided directly at the upstream end of the cannula is used as a soft sealing part prefers.
- the connector consists of a soft sealing material.
- the entire connector is made from this soft sealing material.
- this connector can have a sealing effect at all points where it comes into firm contact with a harder material.
- such a connector is very easy to manufacture.
- FIG. 1A shows a longitudinal section through a catheter head with an inserted puncture needle
- FIG. 1B shows a longitudinal section through a catheter head with the fluid supply connected.
- FIG. IC shows a rear view of the catheter head from the fluid supply.
- FIG. 1D shows a cross section through the catheter head
- FIG. 2A-2B show a longitudinal section through a second embodiment of a catheter head.
- FIG. 3A-3B show a longitudinal section through a third embodiment of a catheter head.
- FIG. 4A-4B shows a longitudinal section through a fourth embodiment of a catheter head.
- FIG. 1A shows a longitudinal section of a first exemplary embodiment of a catheter head 1 with an inserted needle 7.
- a housing 3 gives the catheter head 1 its strength and connects the individual components of the catheter head 1 to one another. Furthermore, it forms a support surface on its underside for placement on the tissue surface, preferably the skin.
- the connection chamber 5 opens to an injection needle connection 6 on an upper side.
- the injection needle 7 with its injection needle holder 12 is attached to this injection needle connection 6.
- the injection needle 7 protrudes through the injection needle connection 6, the connecting chamber 5, a cannula head 13 and through the cannula 2.
- the cannula 2 and the injection needle 7 located therein are also surrounded in FIG. 1A by a protective sheath 2a which is removed before use.
- a connector 11 which can be displaced linearly in the direction of a movement axis L is designed as a hollow body in this exemplary embodiment. Its cavity forms a fluid channel 4 which runs in the direction of the movement axis L of the connector 11.
- the L-axis extends at least substantially parallel to an underside of the catheter head housing 3, which lies on the skin during use.
- the connector 11 is in its first position in FIG. 1A, so that the injection needle 7 extends from the injection needle connection 6 into the connecting chamber 5 and from there can be guided further into the cannula 2 without touching or crossing the connector 11.
- the connector 11 has a passage 8 at one point on its jacket surrounding the fluid channel (4). At least around this passage 8, the connector 11 lies firmly against the catheter head housing 3.
- the entire connector 11 is made of a soft material. The side surfaces of the connector 11 are in close contact with the harder material of the catheter head housing and form a soft-hard seal with it.
- the catheter head housing guides the connector 11 along the L axis.
- the catheter head housing part guiding the connector 11 in its interior also leads with its outer surface a connecting part of a fluid supply when this fluid supply is connected to the catheter head housing 3.
- an insertion gap 15 is formed which extends parallel to the L axis. An element of the fluid supply is inserted into this insertion gap 15 when the fluid supply is plugged onto the catheter head housing 3.
- the fluid connection 10 is located at the left end of the connector 11.
- FIG IB the connector 11 is shown in its second position after removal of the injection needle 7.
- the connector 11 has been displaced deeper into the catheter head housing 3 compared to the first position along the L axis and abuts now within the connecting chamber 5 at its right end directly on the catheter head housing 3.
- a projection 3c of the catheter head housing 3 engages in its opening 9 in order to improve the seal between the soft material of the connector 11 and the catheter head housing 3.
- the connecting chamber 5 is now sealed to the injection needle connection 6 by the connector 11.
- a secure fluid connection is established between the fluid channel 4, the connection chamber 5 and the cannula 2.
- the fluid channel 4 emerges from the connector 11 through the passage 8 directly above the cannula head 13 of the cannula 2.
- a connecting needle 16 On the side of the fluid connection 10, a connecting needle 16 has been inserted into the connector 11 in the direction of the L axis and is sealingly enclosed by the material of the connector 11.
- the connecting needle 16 protrudes from a supply cannula 20 and, for safety reasons and for connection purposes with the catheter head housing 3, is firmly surrounded by a connecting needle holder 17 which is made of a rigid material and to which the supply cannula 20 is also firmly connected.
- a region of the connecting needle holder 17 facing the catheter head housing 3 is designed as a circumferentially axially projecting wall which can be inserted into the insertion gap 15 of the catheter head housing 3 up to a stop 19 Introducing the connection needle holder 17 into contact with the connector 11.
- connection of the fluid supply 16, 17, 20 is coupled to the movement of the connector 11 from the first position to the second position and is synchronized in such a way that the connector 11 has arrived in the second position as soon as the fluid supply has finally been connected to the catheter head housing 3 is.
- the connecting needle holder 17 comes into contact with the connector 11 when attaching the fluid supply 16, 17, 20 with the support surface 17a and presses the connector 11 along the L axis into the catheter head housing 3 until the connector 11 is firmly attached to the right side of the catheter head housing 3 is present.
- the passage 8 also has the cannula head 13 reached so that the fluid connection between the fluid channel 4 and the cannula 2 is established.
- the Katheterkopfgehause 3, the connector 11, and the connecting needle holder 17 are dimensioned so that the connecting needle holder o reaches 17 in the direction of the L-axis against the Katheterkopfgehause 3 in abutting contact when the passage 8 has reached the position in which it the fluid channel 4 connects to the cannula 2 and, at the same time, the fluid channel 4 is also sealed off from the catheter head housing 3 by means of the connector 11.
- the catheter head housing 3 forms a plug and the connecting needle holder 17 forms a socket, which lead to one another.
- the connecting needle 16 has been inserted into the connector 11 in the direction of the L axis through the soft material of the connector 11 and is connected to the fluid channel 4 located therein.
- the fluid product can now be administered.
- FIG. IC shows a rear view of the catheter head 1 along the viewing direction from the fluid connection 10 in the direction of the L axis.
- the cannula 2 protrudes downward from the catheter head housing 3 in the direction of the Q axis perpendicular to the L axis.
- the injection needle connection 6 can be seen at the top.
- the connecting needle 16 can be seen from behind. This is surrounded by the supply cannula 20.
- the supply cannula 20, in which the connecting needle 16 is located, is enclosed by the connecting needle holder 17.
- the shape of the connecting needle holder 17 is approximately elliptical in the rear view.
- the underside of the connection needle holder 17 lies closely against the catheter head housing 3. Instead of the aforementioned plug / socket guide or in addition thereto, the connecting needle holder 17 can also be guided along its underside on the catheter head housing 3 during the connection.
- FIG. 1D shows a cross section through the catheter head 1 along the line AA, which is drawn in FIG. IB.
- Figure 1D is in the upper area by the
- Catheter head 1 out. From the catheter head housing 3 is a lower contact surface 3b to recognize, as well as in the central area, the border 3 a, which is formed around the connector 11.
- the connecting needle holder 17 is inserted between the regions of the catheter head housing 3a and 3b.
- the connector 11 can be seen, in the center of which the connecting needle 16 is located.
- the edge regions of FIG. 1D show elements which serve to firmly connect the connecting needle holder 17 to the catheter head housing 3, they are designed in the form of latching hooks.
- Figure 2A shows a second embodiment of the invention. As in FIG. 1A, this is also a connector 11 designed as a hollow body, which is shown in its first position. The connector 11 projects in the first position as in the first
- the connector 11 is closed on the supply side by a separately manufactured septum 22 fastened in the connector.
- the fluid channel 4 within the connector 11 in the area of the fluid connection 10 is widened in its cross section in the direction of the septum.
- an opening is omitted in the area of the connector 11 adjacent to the connection chamber 5, i. H. the fluid channel 4 is closed there.
- the connector 11 only has a passage 8 in its area facing the cannula 2 adjacent to the connection chamber 5, which is in the first position of the connector
- the connector 11 is limited by the catheter head housing 3. Apart from the septum 22, the connector 11 itself consists of a hard material. The softer element for
- Forming a hard / soft seal with the connector 11 is formed by a cannula head 13 which is enlarged in comparison to the first exemplary embodiment.
- FIG. 2B shows the situation after the injection needle 7 has been removed during administration.
- a connection needle 16, which is firmly enclosed by a connection needle holder 17, has been connected to the connector 11 at the fluid connection 10.
- the connecting needle 16 has the septum 22 of the Pierce connector 11.
- the connector 11 is in its second position.
- the connection of the fluid supply to the connector 11 is coupled with the displacement of the connector 11 from the first position to the second position.
- the connecting needle holder 17 has been inserted into the insertion gap 15 of the catheter head housing 3 until the connecting needle holder 17 in the direction of the cannula 2 has been limited in its movement by the catheter head housing 3.
- the connector 11 now also bears against the catheter head housing 3 in its front region 11a.
- the sealing effect is achieved by a hard / soft seal between the hard base body of the connector 11 and the softer cannula head 13.
- the connector 11 is in sealing contact with the cannula head 13 in the areas 11b and 11c.
- the flexible cannula 2 and the cannula head 13 can be formed together in one piece. They can also each be formed from a different material and be connected to one another in a fluid-tight manner, in particular in a material connection.
- the front area of the connector 11 is provided with a snap hook 23, which serves as a blocking device and prevents the connector 11 from inadvertently slipping out of the second position.
- the blocking device 23 hooks in the area of the injection needle connection 6.
- the snap hook 23 is pressed by the catheter head housing 3 in the direction of the connector 11, in the exemplary embodiment against an upper side of the connector 11. In this state, the snap hook 23 is stretched elastically.
- the connection position the snap hook 23 is released and spreads elastically and therefore automatically from the connector 11.
- the connector 11 By spreading it snaps in the area of the connection 6 behind a wall of the catheter head housing 3, which extends transversely to the direction of movement of the connector 11, ie transversely to the L axis.
- the connector 11 is therefore blocked by means of the snap hook 23 from moving from the second position towards the first position.
- the blocking is in particular not released by pulling off the fluid supply 16, 17, 20.
- the connector 11 locks the cannula 2, and therefore it is not possible to insert a needle 7 through the cannula 2, thereby ensuring that the user Cannot reuse catheter head 1 after use. He would have to deliberately unblock connector 11.
- FIGS 3A and 3B show a third embodiment of the invention.
- the connector 11 in the third embodiment is constructed from two different materials.
- the connector 11 has a harder area 25, which extends over the central area of the connector 11 to the fluid connection 10 and forms the sliding guide when the connector 11 is moved.
- a region 24 of the connector 11, which faces the connection chamber 5, is formed from a softer material.
- This softer area 24 in particular surrounds the passage 8 and seals the transition from the passage 8 to the cannula 2 in the second position of the connector 11. In the area lying outside of the central longitudinal axis L of the connector 11, the softer area 24 is partially enclosed by the harder area 25.
- the connector 11 of the third embodiment is preferred over the first embodiment due to the greater stability of the connector 11 and reduced sliding friction.
- the softer area 24 forming the seal can be an insert part which is inserted frictionally and in particular tightly into the harder remaining part 25 of the connector 11.
- the softer area (24) contains silicone.
- the two regions 24 and 25 can also be formed with one another directly during the original shaping of the connector 11 and be integrally connected, for example in multi-component plastic injection molding.
- FIGS. 3A and 3B show a fourth exemplary embodiment of a catheter head 1, the connector 11 of which, unlike in the previous exemplary embodiments, is not shown as a hollow body.
- the fluid channel 4 is now not integrated into the connector 11, but rather is formed in the catheter head housing 3.
- this fluid channel 4 does not move with it, but remains in a fixed position with respect to the catheter head housing 3.
- the fluid channel 4 formed in the catheter head housing 3 borders, as in the previous examples, to the connecting chamber 5. It opens into the connecting chamber 5, as does the fluid channel 4 of the first exemplary embodiment.
- a region 21 of the connecting chamber 5 that is recessed in the direction of movement of the connector borders on the injection needle connection 6.
- the cannula 2 opens with its cannula head 13.
- the injection needle 7, enclosed in the injection needle holder 12, is guided through the injection needle connection 6 into the connection chamber 5 and through this into the cannula 2 in order to introduce the flexible cannula 2 into organic tissue can.
- the connector 11 is not touched or even penetrated.
- the connector 11 is compact and essentially linear as a plate structure. It has two differently hard axial areas, a softer area 24 in the direction of the connection chamber 5 and a harder area 25 in the direction of the fluid connection 10. In the first position of the connector 11, part of the harder region 25 projects beyond the catheter head housing 3 against the direction of movement.
- the catheter head housing 3 seen from the underside, forms a guide for the connector 11 above the fluid channel 4 in order to guide the connector 11 when moving from the first position to the second position and, with the softer area 24 of the connector 11, the connection chamber 5 above the cannula 2 seal.
- the guide for the connector 11 again extends parallel to the longitudinal direction of the fluid channel 4.
- the connecting needle 16 pierces the septum 22 and thereby creates one Connection between the supply cannula 20 and the fluid channel 4.
- the connecting needle 16 is enclosed in the connecting needle holder 17.
- the connecting needle holder 17 presses against the harder region 25 of the connector 11 in the direction of the L axis and displaces the connector 11 in the direction of the L axis to its second position as shown in Figure 4B.
- the fluid channel 4 remains fixed.
- the softer area 24 of the connector 11 slides into the recess 21 in the connection chamber 5 in a manner that fits the fit.
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007513808A JP4809334B2 (ja) | 2004-06-02 | 2005-05-27 | 可動のコネクタを備えるカテーテルヘッド |
CN2005800180268A CN1960778B (zh) | 2004-06-02 | 2005-05-27 | 具有可移动的连接器的导管头 |
EP05750377A EP1750796A1 (de) | 2004-06-02 | 2005-05-27 | Katheterkopf mit bewegbarem konnektor |
CA002566827A CA2566827A1 (en) | 2004-06-02 | 2005-05-27 | Catheter head comprising a mobile connector |
US11/564,382 US7766874B2 (en) | 2004-06-02 | 2006-11-29 | Catheter head comprising a mobile connector |
HK07112050.5A HK1106728A1 (en) | 2004-06-02 | 2007-11-06 | Catheter head comprising a mobile connector |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004026806.1 | 2004-06-02 | ||
DE102004026806A DE102004026806B4 (de) | 2004-06-02 | 2004-06-02 | Katheterkopf mit bewegbarem Konnektor |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/564,382 Continuation US7766874B2 (en) | 2004-06-02 | 2006-11-29 | Catheter head comprising a mobile connector |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005118055A1 true WO2005118055A1 (de) | 2005-12-15 |
Family
ID=34968797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/005700 WO2005118055A1 (de) | 2004-06-02 | 2005-05-27 | Katheterkopf mit bewegbarem konnektor |
Country Status (8)
Country | Link |
---|---|
US (1) | US7766874B2 (de) |
EP (1) | EP1750796A1 (de) |
JP (1) | JP4809334B2 (de) |
CN (1) | CN1960778B (de) |
CA (1) | CA2566827A1 (de) |
DE (1) | DE102004026806B4 (de) |
HK (1) | HK1106728A1 (de) |
WO (1) | WO2005118055A1 (de) |
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US7985199B2 (en) | 2005-03-17 | 2011-07-26 | Unomedical A/S | Gateway system |
US8012126B2 (en) | 2006-10-31 | 2011-09-06 | Unomedical A/S | Infusion set |
US8062250B2 (en) | 2004-08-10 | 2011-11-22 | Unomedical A/S | Cannula device |
US8221355B2 (en) | 2004-03-26 | 2012-07-17 | Unomedical A/S | Injection device for infusion set |
US8246588B2 (en) | 2007-07-18 | 2012-08-21 | Unomedical A/S | Insertion device with pivoting action |
US8303549B2 (en) | 2005-12-23 | 2012-11-06 | Unomedical A/S | Injection device |
US8430850B2 (en) | 2007-07-03 | 2013-04-30 | Unomedical A/S | Inserter having bistable equilibrium states |
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US8790311B2 (en) | 2006-06-09 | 2014-07-29 | Unomedical A/S | Mounting pad |
US8945057B2 (en) | 2006-08-02 | 2015-02-03 | Unomedical A/S | Cannula and delivery device |
US9186480B2 (en) | 2007-06-20 | 2015-11-17 | Unomedical A/S | Apparatus for making a catheter |
US9211379B2 (en) | 2006-02-28 | 2015-12-15 | Unomedical A/S | Inserter for infusion part and infusion part provided with needle protector |
US9254373B2 (en) | 2008-12-22 | 2016-02-09 | Unomedical A/S | Medical device comprising adhesive pad |
US9415159B2 (en) | 2010-03-30 | 2016-08-16 | Unomedical A/S | Medical device |
US9440051B2 (en) | 2011-10-27 | 2016-09-13 | Unomedical A/S | Inserter for a multiplicity of subcutaneous parts |
US9533092B2 (en) | 2009-08-07 | 2017-01-03 | Unomedical A/S | Base part for a medication delivery device |
US9566384B2 (en) | 2008-02-20 | 2017-02-14 | Unomedical A/S | Insertion device with horizontally moving part |
US9724127B2 (en) | 2010-09-27 | 2017-08-08 | Unomedical A/S | Insertion system and insertion kit |
US10369277B2 (en) | 2005-09-12 | 2019-08-06 | Unomedical A/S | Invisible needle |
US10898643B2 (en) | 2008-02-13 | 2021-01-26 | Unomedical A/S | Sealing between a cannula part and a fluid path |
US11020526B2 (en) | 2010-10-04 | 2021-06-01 | Unomedical A/S | Sprinkler cannula |
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US11197689B2 (en) | 2011-10-05 | 2021-12-14 | Unomedical A/S | Inserter for simultaneous insertion of multiple transcutaneous parts |
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WO2003075980A2 (en) | 2002-03-08 | 2003-09-18 | Applied Diabetes Research, Inc. | Low profile, pivotal connection infusion assembly |
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2004
- 2004-06-02 DE DE102004026806A patent/DE102004026806B4/de not_active Expired - Fee Related
-
2005
- 2005-05-27 WO PCT/EP2005/005700 patent/WO2005118055A1/de not_active Application Discontinuation
- 2005-05-27 CA CA002566827A patent/CA2566827A1/en not_active Abandoned
- 2005-05-27 CN CN2005800180268A patent/CN1960778B/zh not_active Expired - Fee Related
- 2005-05-27 JP JP2007513808A patent/JP4809334B2/ja not_active Expired - Fee Related
- 2005-05-27 EP EP05750377A patent/EP1750796A1/de not_active Withdrawn
-
2006
- 2006-11-29 US US11/564,382 patent/US7766874B2/en not_active Expired - Fee Related
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2007
- 2007-11-06 HK HK07112050.5A patent/HK1106728A1/xx not_active IP Right Cessation
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EP0239244B1 (de) | 1986-02-25 | 1991-09-18 | Pacesetter Infusion Ltd. | Subkutanes Injektionsbesteck |
US20020095138A1 (en) | 2001-01-05 | 2002-07-18 | Lynch George R. | Pivoting joint infusion assembly |
WO2002081012A2 (de) | 2001-04-06 | 2002-10-17 | Disetronic Licensing Ag | Infusionsset |
WO2002094352A2 (en) * | 2001-05-18 | 2002-11-28 | Deka Products Limited Partnership | Infusion set for a fluid pump |
WO2002095352A2 (en) | 2001-05-18 | 2002-11-28 | Endeavor Pharmaceuticals, Incorporated | Patient compliance and monitoring system |
WO2003075980A2 (en) | 2002-03-08 | 2003-09-18 | Applied Diabetes Research, Inc. | Low profile, pivotal connection infusion assembly |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8221355B2 (en) | 2004-03-26 | 2012-07-17 | Unomedical A/S | Injection device for infusion set |
US8287516B2 (en) | 2004-03-26 | 2012-10-16 | Unomedical A/S | Infusion set |
US8062250B2 (en) | 2004-08-10 | 2011-11-22 | Unomedical A/S | Cannula device |
US7985199B2 (en) | 2005-03-17 | 2011-07-26 | Unomedical A/S | Gateway system |
US10369277B2 (en) | 2005-09-12 | 2019-08-06 | Unomedical A/S | Invisible needle |
US8303549B2 (en) | 2005-12-23 | 2012-11-06 | Unomedical A/S | Injection device |
US9278173B2 (en) | 2005-12-23 | 2016-03-08 | Unomedical A/S | Device for administration |
US9211379B2 (en) | 2006-02-28 | 2015-12-15 | Unomedical A/S | Inserter for infusion part and infusion part provided with needle protector |
US8439838B2 (en) | 2006-06-07 | 2013-05-14 | Unomedical A/S | Inserter for transcutaneous sensor |
US8790311B2 (en) | 2006-06-09 | 2014-07-29 | Unomedical A/S | Mounting pad |
US8945057B2 (en) | 2006-08-02 | 2015-02-03 | Unomedical A/S | Cannula and delivery device |
US8012126B2 (en) | 2006-10-31 | 2011-09-06 | Unomedical A/S | Infusion set |
US9186480B2 (en) | 2007-06-20 | 2015-11-17 | Unomedical A/S | Apparatus for making a catheter |
US9320869B2 (en) | 2007-06-20 | 2016-04-26 | Unomedical A/S | Apparatus for making a catheter |
US8430850B2 (en) | 2007-07-03 | 2013-04-30 | Unomedical A/S | Inserter having bistable equilibrium states |
US8486003B2 (en) | 2007-07-10 | 2013-07-16 | Unomedical A/S | Inserter having two springs |
US8246588B2 (en) | 2007-07-18 | 2012-08-21 | Unomedical A/S | Insertion device with pivoting action |
US10898643B2 (en) | 2008-02-13 | 2021-01-26 | Unomedical A/S | Sealing between a cannula part and a fluid path |
US9566384B2 (en) | 2008-02-20 | 2017-02-14 | Unomedical A/S | Insertion device with horizontally moving part |
US10376637B2 (en) | 2008-02-20 | 2019-08-13 | Unomedical A/S | Insertion device with horizontally moving part |
US9254373B2 (en) | 2008-12-22 | 2016-02-09 | Unomedical A/S | Medical device comprising adhesive pad |
US8562567B2 (en) | 2009-07-30 | 2013-10-22 | Unomedical A/S | Inserter device with horizontal moving part |
US9533092B2 (en) | 2009-08-07 | 2017-01-03 | Unomedical A/S | Base part for a medication delivery device |
WO2011082370A1 (en) * | 2009-12-31 | 2011-07-07 | Abbott Diabetes Care Inc. | Injection port device adapted for use with insulin pump |
US9415159B2 (en) | 2010-03-30 | 2016-08-16 | Unomedical A/S | Medical device |
US11786653B2 (en) | 2010-03-30 | 2023-10-17 | Unomedical A/S | Insertion device |
US9724127B2 (en) | 2010-09-27 | 2017-08-08 | Unomedical A/S | Insertion system and insertion kit |
US11020526B2 (en) | 2010-10-04 | 2021-06-01 | Unomedical A/S | Sprinkler cannula |
US11197689B2 (en) | 2011-10-05 | 2021-12-14 | Unomedical A/S | Inserter for simultaneous insertion of multiple transcutaneous parts |
US11110261B2 (en) | 2011-10-19 | 2021-09-07 | Unomedical A/S | Infusion tube system and method for manufacture |
US11684767B2 (en) | 2011-10-19 | 2023-06-27 | Unomedical A/S | Infusion tube system and method for manufacture |
US9440051B2 (en) | 2011-10-27 | 2016-09-13 | Unomedical A/S | Inserter for a multiplicity of subcutaneous parts |
Also Published As
Publication number | Publication date |
---|---|
HK1106728A1 (en) | 2008-03-20 |
US20070112303A1 (en) | 2007-05-17 |
DE102004026806B4 (de) | 2006-05-24 |
EP1750796A1 (de) | 2007-02-14 |
JP4809334B2 (ja) | 2011-11-09 |
DE102004026806A1 (de) | 2005-12-29 |
CA2566827A1 (en) | 2005-12-15 |
JP2008501383A (ja) | 2008-01-24 |
CN1960778B (zh) | 2010-05-05 |
US7766874B2 (en) | 2010-08-03 |
CN1960778A (zh) | 2007-05-09 |
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