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
  • A61M25/00—Catheters; Hollow probes
  • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
  • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
  • A61M25/0113—Mechanical advancing means, e.g. catheter dispensers

Definitions

• the present invention relates to a placement device for a catheter for inserting the catheter into body openings and body vessels consisting of an elongate holding device which is detachably connected to the catheter at one end of the catheter.
• Such placement devices for catheters are known.
• these placement devices are used to place and control a catheter during insertion and placement in corresponding body openings and body vessels.
• the usually tubular holding device is releasably attached to the side of the catheter to be inserted that is opposite the body opening.
• This type of extension controls the insertion and placement of the catheter within the body opening or body vessel.
• the holding device After placing the catheter at the desired location within the body, the holding device must be detached from the catheter. Up to now, this has been done manually, on the one hand by pulling the holding device back suddenly so that the holding device detaches from the catheter end.
• so-called deconnectors are known which run coaxially with the holding device and are guided over it and at the connection point between the catheter and attack the holding device and release it from each other with a corresponding force.
• a disadvantage of the known placement devices is that the jerky and manual release of the holding device from the catheter, in particular also by the known deconnection devices, very often leads to injuries within the body openings and body vessels. The placement of the catheter with such known placement devices can therefore only be carried out very slowly and carefully.
• a placement device has an elongate holding device, the holding device being surrounded by a push tube in such a way that a distal end of the push tube comes to rest in the region of one end of the catheter and the push tube can be displaced coaxially with the holding device by means of a movable push element that when the push tube is displaced in the distal direction, the end of the catheter is released from the distal end of the holding device.
• a construction according to the invention enables the catheter to be easily detached from the placement device, since the detachment takes place by displacing a push tube, which in turn is moved by means of a movable push element.
• the holding device is tubular or solid or solid.
• the holding device can be tubular or tubular, so that a guide wire can be placed coaxially within the holding device.
• the push hose is designed to be elastic or solid.
• the push tube of the placement device can have corresponding aterial properties.
• An elastic push tube is particularly suitable for very long placement devices, a fixed push tube can be used in particular when large forces are required to detach the placement device from the catheter.
• the push element, the holding element and the push hose are arranged at least partially within a housing, the housing having at least one distal opening for the outlet of the holding element and / or the push hose.
• the arrangement of the aforementioned elements of the placement device within a housing results in a very compact construction which is very easy to handle.
• the housing offers protection against possible damage to the elements mentioned.
• the housing consists in particular of an upper housing part and a lower housing part, the upper housing part and the lower housing part being rotatable relative to one another.
• At least one guide for guiding at least one latching element formed on the thrust element is arranged on an inner circumference of the upper housing part, the guide each having at least two latching recesses for receiving the latching element and the latching recesses being offset in the distal direction.
• the placement device allows the thrust element to be displaced parallel to the housing or parallel to the holding element within the housing by simply rotating the upper part of the housing relative to the lower part, so that there is a displacement of the push tube and the corresponding end of the catheter the distal end of the holding device is released.
• this construction according to the invention ensures a jerk-free displacement of the push tube and thus a jerk-free release of the placement device from the catheter.
• a spring element is arranged in a distal region of the lower housing part, the spring element surrounding the thrust tube and abutting an extension element of the thrust element at the end opposite a distal region of the lower housing part.
• the force exerted by the spring element ensures a uniform force profile and a correspondingly uniform application of force of the thrust element on the push hose.
• the spring element enables the push hose to be automatically returned to its starting position.
• the lower housing part is tapered in the distal region. Such a design of the lower housing part significantly simplifies the handling of the placement device.
• the housing has an adapter device at the end opposite the distal region of the lower housing part for connecting further medical and surgical devices. This ensures that the invention
• Plating device has a very wide range of applications.
• Figure 1 is a schematic representation of the placement device according to the invention with an attached catheter
• Figure 2 is a schematic representation of the placement device according to the invention with a released catheter.
• Figure 1 shows a schematic representation of a placement device 10 with a catheter 12 attached. It can be seen that the catheter 12 is detachably with one end. elongated holding device 14 is connected. In particular, a distal end 50 of the holding device 14 is inserted into an end 52 of the catheter 12.
• the holding device 14 is coaxially surrounded by a push tube 16 in such a way that a distal end 54 of the push tube 16 comes to lie in the region of the end 52 of the catheter 12 or bears against it.
• the push hose 16 is connected to a push element 18, the push element 18 being displaceable coaxially with the holding device 14. This also results in a coaxial displaceability of the push hose 16 with respect to the holding device 14, which is also designed like a hose in the exemplary embodiment. It can be seen that when the push tube 16 is displaced in the distal direction, the end 52 of the catheter 12 is released from the distal end 50 of the holding device 14 (see FIG. 2).
• the push element 18, the holding element 14 and the push hose 16 are at least partially arranged or guided within a housing 24.
• the housing 24 has a distal opening 40 for the outlet of the holding element 14 and the push tube 16.
• the housing 24 consists of an upper housing part 34 and a lower housing part 36.
• the upper housing part 34 and the lower housing part 36 are designed to be rotatable relative to one another via a rotary connection 44.
• an immediate guide 26 for guiding two locking elements 22 formed on the push element 18 is arranged on an inner circumference 28 of the upper housing part 34.
• the guide 26 has two locking recesses 30, 32 for receiving the locking element 22 for each locking element 22.
• the locking recesses 30, 32 are offset from one another in the distal direction.
• the two locking recesses 30, 32 thus form the end points for the guidance of the locking elements 22.
• the locking lugs 22 are guided along the guide 26, so that there is a coaxial displacement of the thrust element 18 within the housing 24 is coming.
• This displacement of the thrust element 18 then brings about a corresponding displacement or movement of the thrust hose 16, as can be clearly seen from FIG.
• the shift of the Thrust element 16 then leads to the desired release of the catheter 12 from the placement device 10.
• the guide 26 has two latching recesses 30, 32. However, it is also possible to form further locking recesses within the guide 26.
• a spring element 20 is arranged in a distal region 38 of the lower housing part 36.
• the spring element 20 surrounds the thrust tube 16.
• the spring element 20 bears against an extension element 42 of the thrust element 18.
• the spring element 20 guarantees a jerk-free advance of the thrust element 18 within the housing 24 and thus a jerk-free advance of the thrust hose 16.
• the lower housing part 36 is tapered in the distal region 38.
• the housing 24 is designed overall as a pin, so that the placing device 10 can be handled easily.
• the housing 24 has an adapter device 46 at the end opposite the distal region 38 of the lower housing part 36 via a releasable connecting element 48 for connecting further medical or surgical devices.
• the holding device 14 described can be tubular or tubular or solid.
• the holding device 14 is tubular, wherein a guide wire can be guided within the holding device 14.
• the push hose 16 can be elastic or solid. Both elements, namely the holding element 14 and the push hose 18 consist of a biocompatible and biostable material. A variety of plastics are available for this.

Landscapes

• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Biophysics (AREA)
• Pulmonology (AREA)
• Engineering & Computer Science (AREA)
• Anesthesiology (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Hematology (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Media Introduction/Drainage Providing Device (AREA)
• Ultra Sonic Daignosis Equipment (AREA)
• Surgical Instruments (AREA)

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Applications Claiming Priority (4)

Publications (1)

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• 2003
  • 2003-03-21 ES ES03006470T patent/ES2260532T3/es not_active Expired - Lifetime
  • 2003-03-21 DE DE50303675T patent/DE50303675D1/de not_active Expired - Lifetime
  • 2003-03-21 AT AT03006470T patent/ATE328636T1/de active
  • 2003-03-21 EP EP03006470A patent/EP1459780B1/fr not_active Expired - Lifetime
• 2004
  • 2004-03-17 WO PCT/EP2004/002768 patent/WO2004082752A1/fr not_active Ceased
  • 2004-03-17 EP EP04721146A patent/EP1606005A1/fr not_active Withdrawn

Non-Patent Citations (1)

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