DE29619029U1 - Miocard puncture needle - Google Patents

Description

BOEHMERT & BOEHMERT

LAW FIRM

BOEHMERT, Niemaruasweg 133, D-24105 Kiel

German Patent Office Zweibrückenstr.

80297 Munich

DR-ING. KARL BOEHMEET, PA (»33.1973)
DIPL-ING. ALBERT BOEHMERT, PA (1954-1993) WILHELM JH STAHLBERG, RA, dremen
DR-ING. WALTER HOORMANN, PA·, bhemen DIPL.-PHYS. DR HEINZ GODDAR PA·, Munich DR-ING. ROLAND LIESEGANG, PA·, Munich WOLF-DIETER KUNTZE, RA, Bremen, «,kante DIPL.-PHYS. ROBERT MÜNZHUBER, PA (1K5.1993) DR. LUDWIG KOUKER RA, bbemen
DE. (CHEM.) ANDREAS WINItLER, PA*, Bremen MICHAELA HUTH, RA, Munich
DIPL.-PHYS. DR. MARION TÖNHARDT, PA·, Düsseldorf DR. ANDREAS EBERT-WEIDENFELLER, RA, Bremen MARTIN WiRTZ, RA, Bremen

PROF. DR. WILHELM NORDEMANN, RA, Potsdam DR. AXEL NORDEMANN, RA, Potsdam ANKE SCHIERHOLZ, RA, Potsdam DIPL.-ING. EVA LIESEGANG, PA*. Potsdam DIPL-ING. DR. JAN TÖNNIES, PA, RA, Kiel DIPL.-PHYS. CHRISTIAN BIEHL, PA·, Kiel DIPL-PHYS. DR. DOROTHEA WEBER-BRULS, PA, Ma DR-ING. MAHHIAS PHILIPP, PA, Bremen DIPL.-PHYS. DR STEFAN SCHOHE, PA, Leimig

Al] also admitted it the EU Trademark Office, Alicante

PA · Penntinwait J Patent Attorney
RA ■ Attorney at Law / Attorney at Law
• ■ European Patent Attorney

Your sign
Yourref.

Your Letter of

New registration

Our sign
Our ref.

K5260

Kiel
31.10.1996

Dr. med. Georg Kletke,
Johannisstr. 6, 24534 Neumünster

Needle for myocardial puncture

The invention relates to a needle for myocardial puncture.

It has already been shown that the creation of myocardial puncture channels leads to myocardial revascularization. Up to now, such puncture channels have been created using lasers, with the assumption that the tissue burned by a laser pulse leads to revascularization of the myocardium, especially of the human heart.

196 5

Bremen:

HoitentÜK 32, D-28209 Brcm:n
POB 10 71 27, D-28071 Bremen

Telephone (04 21) 3 40 90
Fax (04 2!) 3 49 17 63
Tetot 244 958 bopol rj

Munich:

FratB-Joseph-Straße 38 D-80801 Munich

Telephone (0 89) 34 70 80 Fax (0 89)34 70 10 Telex 524 2S2 lorfjo d

Berlin-Brandenburg:

Helmet-Long-Slide D-14469 Potsdam

Telephone (03 31) 27 54 Fax (03 31) 2 75 43

Dusseldorf:

NeßlerslraSe 5
D40593 Dusseldorf

Telephone (02 11) 7189 83
Fax (02 11)7 18 27 50

Leipzig:

Philipp-Rosenlhal-Strasse 21
D-04103 Leipzig

Telephone (03 41) 9 60 29 77
Fax (03 41) 31 03 25

Kiel:

Niemannswcg 133
D-24105 Kic!

Telephone (04 31) 8 40 75
Fax (04 31) 8 40 77

Alicante:

Plaza Calvo Sofelo 1-2 ES-O3001 Alicante (Spain)

Telephone +34-6-598 0038 Fax +34-6-598 0182

e-mail: Postmaster@3ochinert.Boehnicrt.dc

However, the invention is based on a different method in which the puncture channel is protected from direct healing for a much longer period of time by the insertion of absorbable stents, a suture material. This advantageously contributes to myocardial revascularization.

According to the invention, these stents are placed using a needle that has a first stent on the outside, possibly already sewn to the myocardium. Additional stent material is located in the needle. After a puncture has been made, which is carried out up to the point where the endocardium is pierced and a drop of blood forms at the other end of the needle, the needle is withdrawn, with the stent being held in place like a loop by the retention forces of the myocardium.

By withdrawing stent from the needle for at least the thickness of the myocardium, sufficient stent material is available for another puncture, after which the needle is withdrawn again and so on, as explained in Fig. 1.

Advantageously, the spoon-shaped tip of the needle will not allow any myocardium material to enter the needle and, on the other hand, a rounded rear edge of the side opening will gently guide the stent material during insertion.

Further features and advantages of the invention emerge from the following description of a preferred embodiment. It shows:

Ek

Fig. 1 the needle according to the invention as a cannula with a spoon-shaped tip,

Fig. 2 a detailed view of the rear rounded opening in longitudinal section, and

Fig. 3 shows an illustrated representation of the placement of the stents in the puncture channels using the needle according to the invention.

The needle shown in Fig. 1 has a cannula 14 which is provided with a tip 16, which can be produced, for example, by bending a needle and then filing it down. This results in a spoon-shaped tip 16 which bends towards the opening. It is important that a rear edge 18 of the opening 12 is rounded, as is shown more clearly in Fig. 2, and that the tip is closed from the front to prevent tissue from entering.

The cannula is provided with a conventional attachment for syringes, for example, so that a short 10 cm or longer 30 - 40 cm long handle corresponding to conventional syringes made hollow for the passage of the stent thread can be inserted into this part 20.

Finally, Fig. 3 shows the myocardium 22 of the heart, on which the stent 24 is attached at a location 26 at the beginning. A loop of the stent 24 is now inserted through the needle in each of the puncture channels 28. The needle is inserted until the endocardium 30 is punctured. The endocardium itself is only slightly punctured, however.

J5

In the needle 10 shown schematically in the right part of the image, the stent guided inside is shown broken through. It is guided out the back through a handle 32.

The needle has a diameter of preferably 0.5 to 0.9 mm and a length of preferably 1.5 to 2.0 cm. The needle can be used in open or endoscopic operations.

Claims (4)

„BOEHMERT & BOEHMERT K 5260 CLAIMS 1. Needle for myocardial puncture, characterized by a hollow cannula (14) receiving a stent (24) with a lateral opening (12) through which a part of the stent (24) located outside the needle (10) is connected to the remaining stent provided inside the needle (10). 2. Needle according to claim 1, characterized in that the opening (12) is provided behind a tip (16) of the needle which bends in a spoon shape towards the opening. 3. Needle according to one of the preceding claims, characterized by a rear edge of the opening (12) which is rounded in the direction of insertion. 4. Needle according to one of the preceding claims, characterized by a handle for supplying additional stent material during subsequent multiple punctures of the myocardium for the respective introduction of a loop that reaches to the endocardium.