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Cap for injection devicesRelated Patent Categories: Surgery, Means For Introducing Or Removing Material From Body For Therapeutic Purposes (e.g., Medicating, Irrigating, Aspirating, Etc.), Treating Material Introduced Into Or Removed From Body Orifice, Or Inserted Or Removed Subcutaneously Other Than By Diffusing Through Skin, Material Introduced Or Removed Through Conduit, Holder, Or Implantable Reservoir Inserted In Body, Means Moved By Person To Inject Or Remove Fluent Material To Or From Body Inserted Conduit, Holder, Or Reservoir, Injector Or Aspirator Syringe Supported Only By Person During Use (e.g., Hand Held Hypodermic Syringe, Douche Tube With Forced Injection, Etc.), Having Cover Or Protector For Body Entering ConduitCap for injection devices description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070173774, Cap for injection devices. Brief Patent Description - Full Patent Description - Patent Application Claims
FIELD OF THE INVENTION [0001] The present invention concerns a cap suitable for injection devices having an exchangeable needle assembly, which serves as a mounting/demounting tool of the said needle assembly. BACKGROUND OF THE INVENTION [0002] Injection devices having exchangeable needle assemblies are well known from numerous patent publications, such as EP-A1-245312, EP-A1-268191, EP-A2-327910, EP-A1-594349, EP-A1-496141, EP-A1-450905, EP-A1-498737, WO 97/36625 A1, EP-A1-1003581, and WO2003011371 A1. [0003] Some of these injection devices are named "pen-type devices" or "pens" due to their essentially longitudinal shape, and the fact, that the device comprises a cartridge containing the drug to be delivered. There are disposable and reusable pens. Generally, both pen types comprise a cartridge containing the drug or pharmaceutical composition to be delivered. It is a particular feature of the reusable pen, that the medicament cartridge may be removed when it is empty and the device may be reloaded with a new one. In contrast, the exchange of the cartridge is not intended in case of the disposable pen, which shall be discarded, when the medicament reservoir (mostly a cartridge) is empty. [0004] This type of injection devices is suitable for the subcutaneous/transdermal application of pharmaceutical compositions, e.g., in the area of diabetes (e.g., insulins, insulin derivatives), treatment or prophylaxis of thrombotic diseases (e.g., heparins, heparin derivatives), treatment by use of growth hormones or vaccination. The injection devices are designed for self-administration of the drug by the patient, as this is required, e.g., for diabetic people, or for the treatment of other diseases, where a long-term treatment is required with regular dosages of a subcutaneous applicable medicament. However, similar or identical injection devices may also be suitable in animal health or vaccination. [0005] Generally, this type injection devices at least comprise a housing consisting of one or more parts, a medicament reservoir of a (liquid or suspended) drug to be delivered, a dosage and drug delivery mechanism (e.g., piston, drive mechanism, dosage mechanism, dispensing mechanism), which allows precise dosage and application of a pre-selected amount of medicament, an injection needle system, and a cap. [0006] The medicament reservoirs of the said devices are mostly designed according to the principle function of a cartridge, whereby the drug is expelled by a movable piston and applied to the patient through an injection needle. [0007] In some cases, the injection needle system (needle assembly) may further contain a particular "needle cap" (which is different from the cap of device). [0008] The skilled person in the art is well aware about many options and technologies how to design or realize the specific design or construction of each of the required elements (optionally, mechanical, electrical, or electronically equipped or supported elements) of such an injection device (such as a housing, medicament reservoir (cartridge), drive mechanism, dosage mechanism, dispensing mechanism, needle assembly, cap etc.). [0009] Generally, the medicament dose, which shall be applied to the patient, is set by a suitable dosage setting and release mechanism and expelled by use of an injection needle (e.g., needles of 29 to 33 Gauge). Injection needles suitable for subcutaneous or hypodermal application of pharmaceutical compositions are of 3-18 mm, mostly 5-13 mm length. [0010] After set up of the needle assembly on the device, the injection needle shall regularly be exchanged preferably after each injection in order to safeguard sterility of the system and avoidance of infections. Accordingly, a regular exchange of the needle is crucial for the patient. [0011] As a matter of fact, many patients (e.g., elderly or diabetic people) may not be able to exchange the needle or needle assembly as it would be required for the abovementioned reasons. [0012] The reason therefore may be any disability with respect to the eyes, fingers, and the like. This may then lead to an increased risk of injury by needle stick for such people or, alternatively, may increase the risk of infection, if the needle/needle assembly is not regularly exchanged. SUMMARY OF THE INVENTION [0013] Here, the present invention will reduce these risks and enable the said patient group to safely exchange the needle assembly without any assistance. In addition, other users of the invention, such as doctors or nurses, may also take advantage of the present invention. [0014] Accordingly, a first aspect of the present invention is a cap for an injection device, wherein said injection device comprises an exchangeable needle assembly, and wherein said cap can be fixed on the device in order to cover the exchangeable needle assembly, and wherein the cap comprises a receiving bore, characterized in that, the cap having the receiving bore is designed to receive the needle assembly. [0015] Consequently, the present invention provides a mounting/demounting means/tool, which is particularly easy to use for the above-mentioned patient groups and is adapted to the particular geometry of the needle assembly of such injection devices. BRIEF DESCRIPTION OF THE DRAWINGS [0016] FIGS. 1A, 1B, 1C and 1D show side views of caps having a clip, wherein FIG. 1A is a cap (1) having a clip designed as a hexagonal ring spanner (2), FIG. 1B is a cap (3) having a clip (4) designed as a spanner comprising a ring of rubber (5), which fits form- and force-locking with the needle assembly, FIG. 1C is a cap (6) having a flexible clip (7) designed as a ring spanner, FIG. 1D is a cap (8) having a flexible clip (9) designed as a spanner comprising a partial ring of rubber (10). [0017] FIGS. 2A and 2B show a top view of the cap, whereby the front side of the cap comprises the receiving bore designed as and having the function of a box spanner. FIG. 2A shows a top view of the cap (11) in which the receiving bore (12) is hexagonally designed, whereas in FIG. 2B the receiving bore (14) of the cap (13) is designed like a ring spanner. [0018] FIGS. 3A and 3B show a side view of the cap having the receiving bore on the front side. FIG. 3A shows a side view of a form- and force-locking attachment (15) of the cap (16), which serves as a receiving bore (17) of the needle assembly (18). FIG. 3B shows a side view of the cap (19), which services as a receiving bore (20) of the needle assembly (21). [0019] FIGS. 4A, 4B, 4C, 4D and 4E show a side view of a cap (22, 23, 24) having the receiving bore on an elongation on the distal end of the cap (25, 26, 27). FIG. 4A shows such an elongation having a receiving bore (28) corresponding to FIG. 1A. FIG. 4B shows such an elongation having a receiving bore (29) corresponding to FIG. 1B. FIG. 4C shows a section view of FIG. 4A, FIG. 4D shows a section view of FIG. 4B. FIG. 4E shows such an elongation having a receiving bore (30) according to a ring spanner. DETAILED DESCRIPTION Continue reading about Cap for injection devices... Full patent description for Cap for injection devices Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Cap for injection devices patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Cap for injection devices or other areas of interest. ### Previous Patent Application: Injection device Next Patent Application: Medical injector handling device Industry Class: Surgery ### FreshPatents.com Support Thank you for viewing the Cap for injection devices patent info. IP-related news and info Results in 0.12457 seconds Other interesting Feshpatents.com categories: Novartis , Pfizer , Philips , Polaroid , Procter & Gamble , 174 |
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