HU189812B - puncture catheter - Google Patents

puncture catheter Download PDF

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Publication number
HU189812B
HU189812B HU41384A HU41384A HU189812B HU 189812 B HU189812 B HU 189812B HU 41384 A HU41384 A HU 41384A HU 41384 A HU41384 A HU 41384A HU 189812 B HU189812 B HU 189812B
Authority
HU
Hungary
Prior art keywords
catheter
spiral
characterized
metal core
catheter according
Prior art date
Application number
HU41384A
Other languages
Hungarian (hu)
Other versions
HUT36386A (en
Inventor
Szabo Laszlo Madi
Original Assignee
Madi Szabo,Laszlo,Hu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Madi Szabo,Laszlo,Hu filed Critical Madi Szabo,Laszlo,Hu
Priority to HU41384A priority Critical patent/HU189812B/en
Publication of HUT36386A publication Critical patent/HUT36386A/en
Publication of HU189812B publication Critical patent/HU189812B/en

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Abstract

Liquid collections in the human body are surgery without a puncture catheter an inner, central, thin, flexible metal core (1), a spiral of one or more metal strips coiled (2) and covering the entire length of the spiral (2), flexibly stretchable plastic sheath (3). The plastic jacket (3) a catheter-shaped tip for inserting a catheter (7) is provided with perforation (6) near. The spiral (2) attached to the tip of the catheter (7) a the metal core (1) and the other end the metal core (1) rotatably mounted on the end (5) connected by a guided ring member (4, 10). The screw element (5) has an injection housing (8). The spiral threads in the closed position are catheter rigid, needle-like, while in open position flexible and inside longitudinal iris (s) (9). The screw element and they are relative to each other tools for determining the angular position.

Description

(57) ABSTRACT

The puncture catheter for unloading fluid assemblies in the human body without surgery has an inner, central thin, flexible metal core (1), a coil of one or more coiled metal strips (2) and a resiliently extending plastic sheath (3) covering the entire length of the spiral (2). ). The plastic sheath (3) is provided with a perforation (6) near the tip (7) of the catheter. The spiral (2) is attached to the metal core (1) at the tip (7) of the catheter and the other end is connected to the ring core (4, 10) rotatably guided on the other end of the metal core (1). The screw element (5) has an injection housing (8).

The spiral threads in the closed position are catheter rigid, needle-like, while in the open position they are flexible and have longitudinal tails (9) inside. There are means for defining the angular position of each of the twist elements and the ring member relative to each other.

189 812

The present invention relates to a puncture catheter for aspirating fluid assemblies in the human body without surgery.

In current medical practice, ultrasound or other method-controlled catheter implantation is commonly used to purge, temporarily or permanently remove fluid in the human body. Commercially available catheters for this purpose consist essentially of a plastic tube coupled to a permanently operating suction device. The implantation of these catheters across the skin requires a large number of aids and the implantation procedure itself is a discomfort for the patient and involves uncertainty for the physician.

The implantation itself is done by the introduction of a guide wire after the targeted needle-in, followed by the stepping of five to six wound-wound wires to accommodate the fixed catheter.

As mentioned, these operations are not only inconvenient to the patient, but may lead to the guide wire slipping off from a once-in-place position and may result in erroneous catheter implantation.

As a result of the above, it would be desirable from a medical point of view to have a method or device available that is less burdensome to the patient, i.e. the introduction of the catheter and the implantation of the catheter, preferably in one step; however, both the introduction of the device and the permanent catheterization should be safe.

The object of the present invention is to create a device that satisfies all the requirements, i.e., the same device serves for implantation, and at the same time fulfills the role of the catheter. According to the basic idea of the invention, this means that the device has two states: one is a rigid, needle-like state, when it can be inserted into the desired location and depth, and the other, when the size of the device can be increased appropriately after reaching the desired location, and so in it. a longitudinal cavity is formed through which catheterization can then be performed. Finally, the device can be brought back to the needle-like state, which makes it easy to remove. Of course, sterility must be guaranteed throughout the procedure.

It is therefore an object of the present invention to provide a device having the essential feature that the first needle to be used for the first insertion and the permanent catheter are the same device. The needle design is such that it can be transformed into a catheter when it becomes a flexible device from the previous rigid device, while its thickness can be varied within a relatively wide range. This ensures that you do not have to start the entire implementation procedure from the beginning if you choose the wrong size.

According to the present invention, the above object and object are achieved by the puncture catheter or by an inner central thin flexible metal core coiled with one or more metal strips wrapped in elastic, elongated, stretchable material, which is the tip of the catheter. with perforation in its surroundings. The spiral is attached to the metal core at the tip of the catheter and at the other end is attached to a ring member rotatably guided by a screw element securing the other end of the metal core. The screw element has an injection slot. The lower end of the metal core ends with a piercing tip, the spiral thread in its closed position is rigid, needle-like, and in its open position is flexible and the longitudinal cavity (s) are (are) formed therein.

Suitably, the bolting element fixed to the metal core and the ring member rotatably guided thereon are provided with means for fixing the angular position relative to one another, or the two elements are perpendicular rotation / t-allowable elements, such as a ratchet. In the case of the metal ribbon spiral, which, as mentioned, may be single or multi-sectional, the width of the strip forming the threads, and in the closed state of the spiral threads, the diameter of the spiral in the region of the catheter tip is smaller and gradually or stepwise in the direction of the other.

The width change of the metal strip may be uniform, but it may be irregular depending on the catheter shape we wish to receive. It may be very advantageous to have a shoulder portion at the edge of the metal strip overlapping a portion of the adjacent thread. This increases the stiffness of the catheter when it is closed.

It may also be possible to make an embodiment in which the metal core is crimped by several metal fibers. At each section of the spiral threads, adjacent threads can be reinforced if they do not require a diameter increase during opening. For example, joining can be done by soldering. If a divider is formed inside the catheter, more longitudinal cavities are formed.

The invention will now be described in more detail with reference to some exemplary embodiments thereof with reference to the drawings, of which:

Fig. 1 shows one embodiment of the catheter with a closed spiral, in a side view, partly in section; Fig. 2 shows an upper portion of another embodiment in a side view, partly in section; Fig. 3 is a bottom view of an embodiment;

Fig. 4 is a sectional view of a bottom end of a preferred embodiment; Fig. 5 is a schematic diagram of a spiral configuration of an embodiment.

Referring to Figure 1, the metal core wire, which may be a single wire but can also be made by twisting two or more fibers, is located in the center of the catheter, with mandrine inside, and wrapped around the metal strip 2, thereby forming a tightly closed spiral. . From the outside, a flexible, flexible plastic sheath 3 is applied to the spiral 2. The lower end of the spiral 2 is attached to the lower end of the metal core wire 1, while the mandrel is provided with a handle 15 at the top of the mandrel, and ends at the bottom of the mandrel 7. It helps to ensure the proper piercing safety and the introduction of the mandrel & needle catheter la. La Mandrin also improves catheter opening and ease of use. The upper end of the spiral 2 is fixed to the ring member 10, which is a ring member 10! rotatably guided on the driver's neck, there is a twist element 12 connected to the upper end of the metal core wire 1. This twisting element 12 is provided with an injection cartridge 14 on top of, for example, a Luer end to which, for example, a Vygon bottle can be attached. The latter is not shown in the figure.

Fixing the annular member 10 at a certain angular position relative to the twist element 12 in the radially spaced portion 13 of the screw element 12

189.812 can be secured with studs.

Figure 2 shows another embodiment of the upper part of the puncture catheter according to the invention. Here, the upper end of the spiral 2 is attached to the neck portion 4b of the annular element 4, which is extended. The screw member 5 extending along the length of the annular element 4, which is not shown in the figure, has an axially movable fastening pin 5a, which can be introduced in the ring member 4 in one of the holes 4a on the same dividing circle, thus providing the 4-ring element and the 5 the angular position of the screw element relative to one another,

As shown in Figure 3, the cup portion 3a in the vicinity of the hill 7 is provided with a perforation 6, i.e. an aperture, and the apertures 6 are expanded into openings for suction when the spiral 2 is expanded, since the spiral 2 can be widened and thickened within wide limits. .

The metal catheter wire 1 of the catheter 1 does not allow longitudinal changes of the catheter when the spiral is opened by rotating the ring members 4 and 10 and the screwing elements 5 and 12 relative to one another, so that only the diameter of the catheter will increase as the threads unfold.

When using the catheter, it is initially in a closed position, so stiff that it fits into the needle, that is, it can be inserted into the patient's body. After the puncture-to-purpose puncture, the spiral 2 is opened by the relative rotation of the ring element 4 and the ring element 10 and the screw element 5 and 12, thereby increasing the diameter of the catheter on one hand and losing its stiffness and becoming flexible as the metal latch 1 does not inhibit its lateral movement. . At the lower end of the 2 spiral, near the tip of the hill 7, some of the threads are expanded - reaching this point - and the end of the catheter becomes jerky. This jerk is about to be a crash against the spontaneous sliding of the catheter. In the expansion of the spiral 2, not only the apertures of the perforation 6 are expanded, but a longitudinal cavity, lumen, is formed inside the catheter and serves as a suction channel. When the suction is finished, the ring elements 4 and 10 and the screwing elements 5 and 12 are rotated in opposite sense, so that the spiral 2 becomes thinner again and takes its needle-like shape, so that the catheter can easily be pulled out. In the embodiment shown in Figure 1, the spiral 2 is slightly tapered, which facilitates the insertion of the catheter, and does not adversely affect the expansion of the lower end of the catheter at the time of opening, since it is disposed in a fluid junction, if it is inserted into a suitable place, so that it can expand freely. while the upper parts of the catheter are compressed by the human body tissues surrounding them.

As shown in Figure 2, the upper portion of the catheter is rigid, designated 4b by the neck portion. In any case, this rigid neck portion 4b remains outside the human body, and thus only the diameter changes described above are carried out in a further about 100-120 mm length. The diameter of the variable part in the needle condition should preferably be below 2 mm, while in the open position it can reach 8 to 10 mm. By rotating the ring members 4 and 10 and the screwing elements 5 and 12, both the diameter of the catheter and its shape can be fixed by means of the locking pin 5a and the fixing bolt 13. When the catheter is pulled out, the retaining pin 5a must be pulled out of the bore 4a, and the retaining screw 13 must be loosened and the relative position of the elements 4 and 10 and 5 and 12 can be changed again, causing the catheter to taper, become rigid and easy. pull-out.

Figure 5 illustrates the design of the spiral forming strip 2 when shoulder portions 2a are present on the strip. These, in the closed position of the 2 spirals, overlap the part 2b of the adjacent thread, thereby obtaining an extra rigid needle when the spiral 2 is closed. This solution is advantageous, as experience shows that the opening of the 2 spirals is not shortened, but rather, due to the elongation of the retracting threads due to its elasticity, is more prone to elongation. As a result, the threads may slide laterally, preventing overlapping of said parts 2a and 2b.

Fig. 4 shows a catheter with a thickened end, where the cavities 9a and 9b can be formed by the internal cavity and the cavity can be formed inside the catheter when the spiral 2 is opened. With such a catheter, several operations can be performed. The jig part 3a may be substantially axially symmetrical, but may also be designed to be deflected in one direction, thereby assuming a pig-like shape, which is very suitable to prevent the guided insertion of the catheter. The catheter according to the invention can only be a disposable device to ensure sterility.

For example, a spiral formed in different shapes can be formed by forming the spiral-forming metal strip 2 in a non-parallel, but wider and narrower section. By modifying the shape of the metal strip, a catheter with a variety of properties can be created.

The undisturbed operation of the opening and closing device shown in Figures 1 and 2 is very important so that the catheter can be safely removed after any time. The material of the spiral 2 should be as thin as possible but strong and flexible so that the catheter becomes flexible when open. The material of the plastic casing 3 is required to be thin and very flexible, while having sufficient resistance during insertion as well as durable suction. The plastic jacket can be fitted with a cm insertion, the depth of penetration, etc.

At the end of the catheter, the actual needle is actually provided by the end of the spiral, so it is important to have a needle-like design for easy insertion. When transformed into a catheter, this needle tip is actually retracted, so it is not traumatic while the device acts as a catheter. Perforation openings 6 at the end of the plastic casing play a crucial role in sustained suction. These are all mentioned in the catheter thickening - they are transformed into small openings from their small pinhole size.

Claims (12)

  1. Claims
    A puncture catheter for aspirating a fluid assembly in an amber body without surgery, comprising an inner, central thin, flexible metal core (1), a spiral (2) of coiled or multiple metal strips, and a full length wrapper (2). a resiliently extending plastic sheath (3), which is provided with perforation (6) near the tip (7) of the catheter for inserting the catheter, and that the catheter (7) is a quarter of the catheter (7).
    189.812 is attached to the metal core (1), and the other end is connected to a screw member (4, 10) rotatably guided on the other end of the metal core (1) by means of a screwing element (8) 5 on the screw element (5) finally, in the closed position of the spiral threads, the catheter is rigid, needle-like, and flexible in its open position and has a longitudinal cavity (s) (9) inside.
  2. 2. The trocar catheter according to claim 1, characterized in that the fémmaghoz (1) fixed fixing the angular position of screwing element 1 in (5.12) and rotatablyto it guided in annular element (4, 10) relative to each other device or devices (4a,
    5a, 13).
  3. A puncture catheter according to claim 2, characterized in that the bolt (5a) moves axially in the screwing element fixed to the metal core (1) and the holes in the same dividing circuit receiving the locking pin (5a) in the annular element (4). (4a).
  4. Puncture catheter according to claim 2, characterized in that the screw (12) fixed to the metal core (1) has a radial fastening screw (13) that can be clamped to the guide neck (11) of the annular element (10). (Priority: 4 May 1985)
  5. A puncture catheter according to claim 1, characterized in that the screwing element (5) fixed to the metal core (1) and the ring member (4) rotatably guided thereon are fitted with one-way rotating elements, such as a ratchet.
  6. 6. Pneumatic catheter according to one of Claims 1 to 5, characterized in that the width of the threads of the metal strip spiral (2) and, in the closed state of the spiral threads, the diameter of the spiral in the region of the catheter tip (7) is reduced, and gradually increasing towards the other end.
  7. 7. Puncture catheter according to any one of the preceding claims, characterized in that the width of the threads of the metal strip spiral (2), i.e. the width of the metal strip (s) constituting the spiral (2), varies, and generally increases evenly or irregularly from the tip (7).
  8. 8. Referring to Figures 1-7. Puncture catheter according to one of Claims 1 to 4, characterized in that the metal strip forming each thread of the spiral (2) is formed with a shoulder portion (2a) which overlaps a portion (2b) of the adjacent thread.
  9. 9. Puncture catheter according to one of Claims 1 to 4, characterized in that the metal core (1) is coiled from two or more metal fibers.
  10. 10. References 1-9. Puncture catheter according to one of Claims 1 to 3, characterized in that the adjacent thread of each section of the spiral (2) is reinforced, for example, soldered.
  11. 11. Referring to Figs. Puncture catheter according to one of Claims 1 to 3, characterized in that in the interior of the spiral (2) a plurality of longitudinal cavities, such as a suction cavity (9a) and a pressure cavity (9b), are formed in the open position.
  12. 12. Puncture catheter according to one of Claims 1 to 4, characterized in that the metal core (1) has a longitudinal cavity and is provided with a mandrel (la) movable axially by means of a handle (15). Fig. 4 (ex. 4, 1985)
    Published by: National Inventory Office Responsible Publisher: Himer Zoltán
    CODE
    -4189.812
HU41384A 1984-01-31 1984-01-31 puncture catheter HU189812B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HU41384A HU189812B (en) 1984-01-31 1984-01-31 puncture catheter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU41384A HU189812B (en) 1984-01-31 1984-01-31 puncture catheter

Publications (2)

Publication Number Publication Date
HUT36386A HUT36386A (en) 1985-09-30
HU189812B true HU189812B (en) 1986-08-28

Family

ID=10949505

Family Applications (1)

Application Number Title Priority Date Filing Date
HU41384A HU189812B (en) 1984-01-31 1984-01-31 puncture catheter

Country Status (1)

Country Link
HU (1) HU189812B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7094220B2 (en) 2001-06-29 2006-08-22 Coloplast A/S Catheter assembly including a catheter applicator
US7311698B2 (en) 2001-09-24 2007-12-25 Coloplast A/S Urinary catheter assembly allowing for non-contaminated insertion of the catheter into a urinary canal
US7682353B2 (en) 2001-06-29 2010-03-23 Coloplast A/S Catheter device
US9585784B2 (en) 2011-08-29 2017-03-07 Coloplast A/S Catheter activation by handle removal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9927900D0 (en) 1999-11-25 2000-01-26 Ssl Int Plc Medical device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7094220B2 (en) 2001-06-29 2006-08-22 Coloplast A/S Catheter assembly including a catheter applicator
US7682353B2 (en) 2001-06-29 2010-03-23 Coloplast A/S Catheter device
US8066693B2 (en) 2001-06-29 2011-11-29 Coloplast A/S Catheter device
US10441454B2 (en) 2001-06-29 2019-10-15 Coloplast A/S Urinary catheter provided as a package
US7311698B2 (en) 2001-09-24 2007-12-25 Coloplast A/S Urinary catheter assembly allowing for non-contaminated insertion of the catheter into a urinary canal
US7922712B2 (en) 2001-09-24 2011-04-12 Coloplast A/S Urinary catheter assembly allowing for non-contaminated insertion of the catheter into a urinary canal
US9585784B2 (en) 2011-08-29 2017-03-07 Coloplast A/S Catheter activation by handle removal

Also Published As

Publication number Publication date
HUT36386A (en) 1985-09-30

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