Surgery – Instruments – Suture retaining means
Patent
1995-04-04
1996-12-17
Buiz, Michael Powell
Surgery
Instruments
Suture retaining means
606148, 606151, 606142, 227902, A61B 1700
Patent
active
055848613
DESCRIPTION:
BRIEF SUMMARY
This application is a 371 of PCT/6B93/01860 filed Sep. 3, 1993 which was filed off of United Kingdom 9218754.1 filed Sep. 4, 1992.
BACKGROUND OF THE INVENTION
This invention relates to a device for use in securing a thread. It is particularly intended for use in securing threads in surgery, and more particularly in surgery carried out using an endoscope, notably a flexible endoscope.
It has hitherto proved difficult to secure threads by knotting during flexible endoscopy. In effect, the surgeon is operating down a single longitudinally extending channel, and in endeavouring to tie a knot the surgeon encounters the problem that an effective knot generally requires the application of force along a direction transverse to the channel of the endoscope. The present invention aims to provide a solution to that problem.
SUMMARY OF THE INVENTION
According to the present invention there is provided a device for use in securing a thread, which comprises a tube provided with means defined at one end thereof for receiving therein a sleeve having a cavity in which a plug is insertable.
An embodiment of the invention is shown diagrammatically in the accompanying drawings, which is a longitudinal section. It should be emphasised that the drawing is not to scale.
BRIEF DESCRIPTION OF THE DRAWING
The sole FIGURE is a cross-sectional view of a device for securing a thread according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The device comprises a tube 1, which is preferably a flexible tube. At the distal end, i.e. the end which is to be inserted into the patient, an overtube 2 is fixedly secured to the tube 1 to define a recess 3. Extending along the outside of the tube 1, and over the end of the overtube 2, is a U-shaped stirrup 4. The stirrup may be made, for example, of a stainless steel wire. The stirrup is longitudinally slidable with respect to the tube 1, and the arms of the stirrup pass through respective guide passages 11. To enable sliding to be effected the proximal end of the stirrup is secured to a slide member 5 which can be grasped and moved by the user. In addition to the guide passageway 11, other means (not shown) are provided along the length of the outside of the tube, within which the stirrup is slidable, so as to prevent the stirrup from slipping off the tube. Near its distal end, the tube 1 is provided with a pair of apertures 6 each of which has a diameter substantially greater than the diameter of the surgical thread with which the device is to be used. One of the apertures is visible in the drawing. The other is diametrically opposite to it. The purpose of the apertures 6 will become apparent from the description below of the use of the device.
The recess 3 serves to receive an elongate sleeve 7. The sleeve defines within it a cavity 8. The cavity 8 is open at one end to the end of the tube 1, and, although not shown, at that end the cavity is preferably chamfered. The other end of the cavity 8 communicates with the other end of the sleeve 7 by a passage 9. The stirrup 4 is offset with respect to the longitudinal axis of the tube 2, with which the passage 9 is aligned, so that when the stirrup is moved leftwards with respect to the tube it does not foul the end of the passage 9. The passage is smaller in diameter than the cavity 8, but large enough to permit the surgical thread to pass therethrough. A plug 10 is located in the cavity 8, the plug being of a size such that it can slide down the interior of the tube 1. The sleeve 7 is removable from the recess 3, and the plug 10 is removable from the cavity 8, and at the start of the procedure in which the device is used, the sleeve 7 and plug 10 are separate from one another and from the remainder of the device.
Prior to the thread-securing procedure in which the device of the present invention is used, the surgeon has carried out a surgical procedure in which a thread has been passed through the tissue of the patient, and the ends of the thread now need to be secured. It is assumed for present purposes tha
REFERENCES:
patent: 4235238 (1980-11-01), Ogiu
patent: 4741330 (1988-05-01), Hayhurst
patent: 4750492 (1988-06-01), Jacobs
patent: 5364407 (1994-11-01), Poll
patent: 5366459 (1994-11-01), Yoon
Brown Geoffrey J.
Gong Feng
Mills Timothy N.
Swain Paul
Buiz Michael Powell
Schmidt Jeffrey A.
University College London
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