Source: https://patents.google.com/patent/US20070167676A1/en
Timestamp: 2018-08-20 08:02:42
Document Index: 464124334

Matched Legal Cases: ['art 5', 'art 15', 'art 90', 'art 90', 'art 90', 'art 90', 'art 90', 'art 100', 'art.\n13', 'art.\n14']

US20070167676A1 - Overtube and medical procedure via natural orifice using the same - Google Patents
US20070167676A1
US20070167676A1 US11435182 US43518206A US2007167676A1 US 20070167676 A1 US20070167676 A1 US 20070167676A1 US 11435182 US11435182 US 11435182 US 43518206 A US43518206 A US 43518206A US 2007167676 A1 US2007167676 A1 US 2007167676A1
US11435182
The puncture needles 32A and 32B and pushers 35 are respectively accommodated in two outer sheaths 38. Each of the two outer sheaths 38 is inserted through the insertion part 5 and has a distal end connected to the distal end part 15. A slit 32 a, through which a suture 33C of the double T-bars 33 is inserted, is formed at a distal end of each of the puncture needles 32A and 32B. A rigid, pushing member 35A is disposed at a distal end of the pusher 35.
Theoretically, in the case where there is no first slit 98, then suture 33C is exposed from the opening 95A of the lumen for needle 95, and extends out toward the outer surface of the distal end part 90, and the suture 33C is folded over inside the lumen for needle 95 at an acute angle. In this case, an undesirable bending tendency in the suture 33C may arise depending on the suture material used. When this bending tendency arises in the penetrating direction of the puncture needles 93A, 93B, then, as shown in FIG. 34, when the portion of the suture material in which bending has occurred comes into contact with the tissue, resistance is encountered. As a result, the puncturing operation does not go smoothly. Furthermore, theoretically, when the opening 95A of the lumen for needle 95 is on a side surface different from that of the hole 37, i.e., when the opening 95A is formed on the inside surface, then the suture 33C is disposed so as to transect the distal end surface 90 a of the distal end part 90. Accordingly, when carrying out the placing step, the suture 33C becomes interposed between the distal end surface 90 a and the tissue, and the suture 33C is pulled in the puncturing direction of the puncture needles 93A, 93B accompanying the action of puncturing the tissue with the puncture needles 93A, 93B. When the pulling force acts in a direction to move the tissue away from the distal end part 90, and when the pulling force is exceed a force that brings the tissue near and into contact with the distal end surface 90 a, then the state in which the tissue is drawn to and held in contact with the distal end part 90 is released. In this case, it becomes difficult for the puncturing action to be carried out smoothly.
In contrast, by means of the present overtube 96, the opening 95A from which puncture needles 93A, 93B project out is formed to the same side as the outside of the distal end part 90. Thus, even if the tissue is drawn toward the distal end surface 90 a, the suture 33C is not disposed between the distal end surface 90 a and the tissue. Accordingly, the puncturing action can be carried out smoothly. Furthermore, since a first slit 98 is provided, it is possible to reduce the occurrence of undesirable bending in the suture 33C. Accordingly, the puncture operation can be carried out with greater certainty. In addition, by disposing the anchor 33A in puncture needles 93A, 93B as described above, the angle formed by the suture 33C and the tissue when puncturing the tissue is small, i.e., the angle formed between the direction of extension of the suture 33C and the lumen for needle 95 becomes closer to parallel. Accordingly, when puncturing, it is possible to limit the resistance of the suture 33C with respect to the tissue, and to carry out the puncturing operation with greater certainty.
In addition, as shown in FIGS. 35 and 36, it is also acceptable to provide in place of a first outer groove 91 and a second outer groove 92, an overtube 101 in which a lumen for needle 95 is provided opening directly on the distal end surface 100 a of the distal end part 100. This arrangement offers actions and effects equivalent to those of the overtube 101 described above.
9. The medical procedure through a natural orifice according to claim 8, further comprising
11. The medical procedure through a natural orifice according to claim 8, further comprising
12. The overtube according to claim 6, further comprising
a short tubular distal end part that is disposed to the distal end of the insertion part, wherein
a receiving part for engaging and holding the other end of a suture when one end of the suture for suturing the hollow organ is housed in the hollow needle is provided to an inside or an outside of the distal end part, and
a lumen for needle through which the hollow needle is retracted and projected is provided opening on a surface on which the receiving part is provided or on the distal end surface of the distal end part.
13. The overtube according to claim 12, wherein
the housing is provided to a surface of the outside of the distal end part.
14. The overtube according to claim 12, wherein
a first slit into which the suture is to be inserted is provided to the hollow needle, and
a second slit that communicates with a surface of the outside of the distal end part and an inner surface of the lumen for needle and into which the suture is to be inserted is provided to the lumen for needle.
15. The overtube according to claim 12, wherein
one end of the suture is housed inside a hollow anchor that is provided with an axially directed slit into which the suture is to be inserted, the suture extending from the slit, and
the hollow anchor is housed in the groove such that the suture extends from the distal end to the base of the hollow needle.
US11435182 2006-01-13 2006-05-16 Overtube and medical procedure via natural orifice using the same Abandoned US20070167676A1 (en)
US11435182 US20070167676A1 (en) 2006-01-13 2006-05-16 Overtube and medical procedure via natural orifice using the same
US12958867 US20110071354A1 (en) 2006-01-13 2010-12-02 Overtube and medical procedure via natural orifice using the same
US11331938 Continuation-In-Part US20070167675A1 (en) 2006-01-13 2006-01-13 Overtube and medical procedure via natural orifice using the same
US20070167676A1 true true US20070167676A1 (en) 2007-07-19
ID=46325504
US11435182 Abandoned US20070167676A1 (en) 2006-01-13 2006-05-16 Overtube and medical procedure via natural orifice using the same
US12958867 Abandoned US20110071354A1 (en) 2006-01-13 2010-12-02 Overtube and medical procedure via natural orifice using the same
US (2) US20070167676A1 (en)
US20110071354A1 (en) 2011-03-24 application
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MIYAMOTO, MANABU;KOGASAKA, TAKAHIRO;DEJIMA, TAKUMI;AND OTHERS;REEL/FRAME:018243/0462