U.S. patent application number 10/554947 was filed with the patent office on 2006-06-08 for anchoring screw device.
Invention is credited to Erwin De Winter.
Application Number | 20060122638 10/554947 |
Document ID | / |
Family ID | 33315066 |
Filed Date | 2006-06-08 |
United States Patent
Application |
20060122638 |
Kind Code |
A1 |
De Winter; Erwin |
June 8, 2006 |
Anchoring screw device
Abstract
The present invention, the ASD, is a mechanical device for
anchoring hollow tube-like structures in the human body, such as
blood vessels and ureters. It facilates positioning needles or
catheters in blood vessels and it prevents those from dropping out
of the vessel or from "wandering off" in the vessel. The ASD can be
used in every interventional medical situation for diagnostic or
therapeutic purposes. The ASD is very easy to fix onto the vessel
wall. Screwing is a fast technique saving operating time and
requiring only basic microsurgical skills. The manufacturing is
easy. It should be understood that the foregoing is illustrative
and nor limiting, and that modifications may be made by those
skilled in the art, without departing from the scope of the
invention.
Inventors: |
De Winter; Erwin; (Mortsel,
BE) |
Correspondence
Address: |
BROWDY AND NEIMARK, P.L.L.C.;624 NINTH STREET, NW
SUITE 300
WASHINGTON
DC
20001-5303
US
|
Family ID: |
33315066 |
Appl. No.: |
10/554947 |
Filed: |
July 7, 2003 |
PCT Filed: |
July 7, 2003 |
PCT NO: |
PCT/BE03/00120 |
371 Date: |
February 2, 2006 |
Current U.S.
Class: |
606/153 |
Current CPC
Class: |
A61B 17/11 20130101;
A61B 17/3415 20130101; A61B 2017/00004 20130101; A61B 2017/1139
20130101; A61M 39/06 20130101; A61B 2017/0648 20130101; A61B
17/1114 20130101; A61B 2017/1107 20130101; A61B 17/3423 20130101;
A61B 2017/0649 20130101; A61B 2017/3488 20130101; A61B 2017/1135
20130101; A61M 2025/0286 20130101; A61B 2017/00867 20130101; A61M
39/04 20130101; A61B 17/0057 20130101; A61M 39/0208 20130101; A61B
17/064 20130101; A61M 25/02 20130101; A61M 25/04 20130101 |
Class at
Publication: |
606/153 |
International
Class: |
A61B 17/08 20060101
A61B017/08 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 28, 2003 |
BE |
03/00074 |
Claims
1-6. (canceled)
7. Surgical screw-device adapted for being anchored onto a wall of
a tube-liked structure inside the human body, such as for example a
blood vessel or a ureter, the screw-device comprising a hollow
screw with windings, between which in use the wall of the tube-like
structure is anchored, characterised in that the screw-device
further comprises non-cutting perforating means, fixed or removably
attached to the hollow screw, for perforating the wall of the
tube-like structure in such a way that passage of the winding of
the hollow screw by screwing in enabled.
8. Surgical screw-device according to claim 7, characterised in
that the perforating means is formed by a front winding of the
hollow screw, the front winding having a sharp and round end.
9. Surgical screw-device according to claim 8, characterised in
that the sharp and round end is bent inwardly and downwardly in an
angle of 10 to 20 degrees with respect to the other windings.
10. Surgical screw-device according to claim 8, characterised in
that the sharp and round end is bent downwardly in an angle of 90
degrees with respect to the other windings.
11. Surgical screw-device according to claim 7, characterised in
that the screw-device further comprises a hollow structure, fixed
onto the hollow screw.
12. Surgical screw-device according to claim 11, characterised in
that the hollow structure is provided with means for fixing a
needle or a catheter onto the screw device.
13. Surgical screw-device according to claim 11, characterised in
that the hollow structure is filled with thrombostatic or
haemostatic material.
14. Surgical screw-device according to claim 11, characterised in
that the perforating means comprise a removable head, removably
attached to the hollow screw.
15. Surgical screw-device according to claim 14, characterised in
that the removable head comprises windings, each winding being
wider than the previous one for expanding the perforation in the
wall of the tube-like structure.
16. Surgical screw-device according to claim 14, characterised in
that the hollow screw comprises windings, each winding being wider
that the previous one for expanding the perforation in the vessel
wall made by the head.
17. Surgical screw-device according to claim 14, characterised in
that the removable head is attached to the hollow screw by means of
anti-clockwise windings.
18. Surgical screw-device according to claim 7, characterised in
that the screw-device is made of inox material, or titanium, or
super-elastic materials such as nitinol or synthetic materials, or
resorbable materials.
Description
[0001] This invention relates to anchoring a SCREW-DEVICE onto a
tube-like structure, for example a blood vessel, in such a way (1)
that a needle or a catheter can be passed safely into the hollow
structure and (2) that this needle or catheter can be positioned
firmly in the vessel so that it cannot slip out or be displaced
(i.e. be carried away by the fluid in the vessel).
BACKGROUND ART
[0002] In many interventional medical procedures we want to reach
hollow structures like a blood vessel or a ureter. During these
procedures we want to place a catheter or a needle into the hollow
structure to have access to it, mostly for therapeutic reasons such
as the administration of medication, the placing of a stent or a
coil, dilatation and so one. Sometimes access to the aforementioned
hollow structures is necessary for diagnostic purposes.
[0003] The firm and stable fixation of a catheter into the wall of
a hollow structure is essential since the catheter should under no
circumstances fall out of the vessel or `wander off` into the
vessel. In the human body some hollow structure are embedded in
surrounding tissue which enables the catheter to stay in place.
This is the case for example with the blood vessels in a limb. It
is completely different in the thorax, skull, or abdomen, where
hollow structure are surrounded by less connective tissue and a
catheter can easy slip out or be displaced. To prevent this, the
catheter has to be fixated by suturing it to the wall of the
vessel, but this is difficult and time consuming.
[0004] The present invention, the ASD, can easily be screwed onto
the vessel-wall, where it gives a maximum stability and support for
the catheter, which can then safely be inserted into the
vessel.
[0005] Interventional fields include diagnostic procedures that
involve the implantation of a catheter or needle; and therapeutic
procedures that involve interventions (such as placing a catheter
for medication) or that involve surgical operations, laparascopy,
possibly in combination with endoscopic procedures.
SUMMARY OF INVENTION
[0006] The invention makes it possible to anchor a hollow
structure, like a blood vessel, easily and quickly. More
specifically, the ASD allows the physician dealing with medical
intervention to make a stable and safe connection with a hollow
structure in such a way that a catheter can be firmly positioned
without any need for time consuming suturing.
DETAILED DESCRIPTION OF THE ASD INVENTION
[0007] 1 The ASD takes the form of a hollow screw, with an ending
that is not--as in the regular screw--a point, but one full spiral
winding (360 degrees). The end of the winding is sharp and round,
i.e. it is non-cutting but it is capable of perforating the wall of
the hollow tube-like structure in which it is screwed. The sharp,
round point is bent inwardly and downwardly in an angle of 10 to 20
degrees (.alpha.) (see FIG. 1a), Alternatively, this sharp, round,
non-cutting point may bend downwardly in an angle of 90 degrees
(.alpha.) (see FIG. 1b). In this case, the end resembles a
cork-screw, but the end is not situated in the middle of the final
winding but on the periphery.
[0008] 2 The ASD the same as mentioned in 1 but with the body of
the screw filled with thrombostatic or haemostatic material that
functions as a sponge against leakage of the vessel after the
catheter has been removed (see FIG. 2).
[0009] 3 The ASD with removable head. This device consists of two
basic parts: first, the removable head with applicator (i.e. a
long, thin shaft with a handle used to drill the head into the
vessel wall) and second, a hollow ASD with a hollow screw of three
windings, which remains in place (i.e. in the vessel wall).
[0010] The removable head consists of two windings, and ends in the
form of a corck-screw (see FIG. 3a, 3b). This is, again, a round,
sharp, non-cutting point. The head forms one whole with the
applicator. Once the head is in place (i.e. in the middle of the
vessel wall) (see FIG. 3c), it is removed, together with the
applicator, from the rest of the ASD that stays within the vessel
wall. The second part is the body of the ASD. It consists of three
hollow windings attached to the head by means of internal,
anti-clockwise windings (see FIG. 3d). Every winding is wider than
the previous one, thus expanding the vessel wall. The opening in
the wall is made by the head in a non-occlusive way, i.e. the
receptor vessel need not be temporarily occluded.
Diameter
[0011] Depending on the sort of hollow structure, like a
blood-vessel, the diameter of ASD may vary from 1 millimeter to 2
centimetre, or even more.
Substance
[0012] The ASD is made of inox material, or titanium, or
super-elastic materials such as nitinol, or synthetic materials, or
even resorbable materials.
Thickness of Material
[0013] Depending on the diameter of the blood-vessel, the material
may vary from 0,1 mm to any desirable thickness.
Elasticity
[0014] Depending on the material.
Description of Application of the ASD.
[0015] The ASD is screwed one turn of 360 degrees into the receptor
wall. This ensures a stable fixation on the wall. A needle or a
catheter is then inserted through the ASD into the wall, and is
fixed onto the ASD so that it cannot slip out of the vessel or
`wander off` into the vessel.
MANUFACTURING AND INDUSTRIAL APPLICABILITY
[0016] The SCREW-DEVICE can be manufactured commercially and be
employed to anastomose two vessels of different or identical sizes.
It can be used in all domains of vascular surgery, heart surgery,
and neurosurgery.
BRIEF DESCRIPTION OF FIGURES
[0017] FIG. 1a: ASD
[0018] FIG. 1b: ASD onto the wall
[0019] FIG. 2: ASD filled with thrombostatic or haemostatic
material
[0020] FIG. 3a: ASD with removable head lateral view
[0021] FIG. 3b: ASD with removable head top view
[0022] FIG. 3c: ASD with removable head in situ view, position into
the wall
[0023] FIG. 3d: ASD with removable head, view of the way in which
the removable head is attached to the boy of the ASD
* * * * *