JPH0644512U - Instruments for vascular stenosis - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a disposable instrument for vascular stenosis that can stop bleeding quickly and reliably without damaging the blood vessel. [Structure] A hemostatic device for vascular anastomosis comprising a crescent-shaped torso and a gripping portion extending from a rear end of the torso,
The width of the side surface of the body is gradually narrowed from the rear end toward the tip, and a thread holding portion is provided on the front end side of the body and a thread hooking space is provided at the base end of the grip portion. The device for vascular stenosis is arranged such that the yarn reaches the yarn hooking space from the yarn holding portion through the outer surface of the body portion and the upper surface of the grip portion extending from the outer surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a blood vessel stenosis device for temporarily narrowing blood vessels, particularly veins, to stop bleeding during surgery.

[0002]

[Prior art]

 Conventionally, in surgery, many blood vessels are stenotic to prevent blood loss in a patient due to blood overflow at the surgical site, and incision or anastomosis of blood vessels downstream of the stenotic blood vessel site is performed. ing. As a method of narrowing blood vessels, various types of plastic or metal hemostatic clips have been used, or a doctor's procedure has been used to tie the circumference of blood vessels with a thread to stop the blood vessels.

[0003]

[Issues to be solved by the device]

 However, a plastic or metal hemostatic clip can stop bleeding due to stenosis of a large-diameter blood vessel such as an artery, but can add to the blood vessel in the case of a small-diameter blood vessel such as a vein. Depending on the pressure condition, blood flow may not be obtained when the blood vessel is squeezed and the clip is opened. In addition, the method in which the doctor binds the circumference of the blood vessel with a ligature to stop the bleeding requires a long time to ligate the thread because it takes time to attach the thread because the thread must go around the blood vessel. I won't. Furthermore, the ligation force of the thread depends on the doctor's care, so if it is too strong, it may damage the blood vessels, and if it is too weak, hemostasis may not be sufficient. An object of the present invention is to provide a disposable device for vascular stenosis that can stop bleeding quickly and reliably without damaging the blood vessel.

[0004]

[Means for Solving the Problems]

 That is, the present invention provides a hemostatic device for a vascular anastomosis comprising a crescent-shaped torso and a grip portion extending from the rear end of the torso, wherein the side surface of the torso has a width from the rear end toward the front end. The thread is gradually narrowed, and a thread holding portion is provided at the tip end side of the body portion, and a thread hooking space portion is provided at the base end of the grip portion, so that the thread moves from the thread holding portion to the outer surface of the body portion and the outer portion. The device for vascular stenosis is arranged so as to reach the threading space through the upper surface of the grip portion extending from the surface. Further, the present invention is the vascular stenosis device according to the above-mentioned vascular stenosis, wherein the threading space portion comprises a notch provided in the longitudinal direction of the grip portion.

[0005]

[Action]

 The blood vessels to be stenotic are selected by the tip of the trunk with thinned sides, the blood vessels are arranged on the outer surface of the arcuate trunk almost at right angles to the long axis direction, and the thread extending from the thread holder is The blood vessel is narrowed on the outer surface of the trunk by being installed along the outer surface toward the threading space of the grip portion. The thread that narrows the blood vessel is held and fixed in the threading space, and does not relax during the course and the pressure applied to the blood vessel does not weaken. In addition, the blood vessel is narrowed by the pressure of the thread on the outer surface of the arcuate body. Then, since the thread is directly connected to the threading space without being brought into contact with the outer surface of the body portion or the upper surface of the grip portion from the blood vessel portion and is gripped, the blood vessel has less pressure fluctuation than the flat pressure. And a certain amount of pressure is always applied to the blood vessels, which does not damage the blood vessels or cause insufficient hemostasis.

[0006]

【Example】

 The present invention will be described below with reference to examples. FIG. 1 is a perspective view of the vascular stenosis device of the present invention, and FIG. 2 is a side sectional view of the vascular stenosis device of the present invention. In the figure, 1 is a body part, 2 is a gripping part, 3 is a thread holding part, 4 is a threading space, 5 is a blood vessel, 6 is a thread, 7 is an outer surface, 8 is an upper surface, and 9 is a side surface.

The device for vascular stenosis according to the present invention comprises a crescent-shaped body 1 and a grip portion 2 continuously extending from a rear end 10 of the body 1 for gripping the device for vascular stenosis with a hand or forceps. Become . The width of the side surface 9 of the body 1 is gradually narrowed from the rear end 10 toward the front end 11. The tip 11 is flat and thin in order to select the blood vessel 5 to be hemostasis, and preferably has a spatula shape. The outer surface 7 of the body portion 1 has an arc shape, and has a certain width, for example, 1.5 to 5 in order to allow the thread 6 to travel along the longitudinal direction of the outer surface 7 and to install the blood vessel to be hemostasis at a substantially right angle. Has 5.0 mm. The tip 11 of the outer surface 7 is provided with a thread holding portion 3 which serves as a fulcrum for the thread 6. The thread holding portion 3 holds the thread 6 by forming a small hole or a notch in the tip 11 near the center of the width of the outer surface 7, or by applying an adhesive to the tip 11 to fix the thread 6. It has become.

The grasping portion 2 is a portion that extends continuously from the rear end 10 of the body portion 1 and is integrally molded, and is a portion for grasping the device for vascular stenosis with a manual or forceps. A thread hooking space 4 for hooking the thread 6 is provided at the base end 12, and the thread 6 with the blood vessel 5 constricted by the outer surface 7 of the body 1 is held by the outer surface 7 of the body 1 and the grip portion. Since the yarn 6 is directly fixed to the yarn hooking space portion 4 without coming into contact with the upper surface 8 of the yarn 2, the yarn 6 is prevented from sagging and bending even after a lapse of time. As the thread hooking space 4, it is preferable to provide a cutout in the longitudinal direction of the upper surface 8 to fix the thread 6. The widths of the upper surface 8 and the side surfaces of the grip portion 2 are preferably the same as the width of the rear end 10 of the body portion 1. Examples of the material for the device for vascular stenosis include plastics such as polyvinyl chloride, polyethylene, propylene, polyurethane, polyester, polyamide, polymethacrylate, and fluorine resin. The straight line distance from the distal end 11 to the proximal end 12 of the vascular stenosis device is preferably 30 to 60 mm.

The blood vessels 5 to be narrowed are selected by the body tip 11 having a spatula-like thin tip, and the blood vessels 5 are arranged on the outer surface 7 of the body having an arcuate shape substantially at right angles to the longitudinal direction, and thread holding is performed. The yarn 6 extending from the portion 3 is installed along the longitudinal direction of the outer surface 7 of the body portion 1 toward the yarn hooking space portion 4 of the grip portion 2. The thread 6 extends from the thread holding portion 3 along the longitudinal direction of the body 1 as shown in the side sectional view of FIG. 2, and is in contact with the outer surface 7 of the body 1 at a substantially right angle to the outer surface of the blood vessel 5. By pressing the non-contact surface of the blood vessel in the cross-sectional direction, the inside of the blood vessel 5 is squeezed and the flow of blood is stopped at the squeezed portion to stop the bleeding. The ground contact point on the outer surface 7 of the body 1 of the blood vessel 5 is most preferably near the apex of the arc, but may be between the apex and the rear end 10. The thread 6 squeezed by squeezing the blood vessel 5 is directly gripped and fixed in the threading space 4 without coming into contact with the outer surface 7 of the body 1 and the upper surface 8 of the grip 2 from the stenosis site.

[0010]

[Effect of device]

 The thread squeezed from the blood vessel grounded on the outer surface of the arcuate body is grasped and fixed in the threading space without coming into contact with the outer surface of the body or the upper surface of the grip from the blood vessel location. Is less likely to relax on the way and the pressure on the blood vessel fluctuates. Therefore, a constant pressure is always applied to the blood vessel, and the blood vessel is not damaged or the hemostasis is not sufficient. In addition, the device for vascular stenosis of the present invention is easy to operate and disposable.

[Brief description of drawings]

FIG. 1 is a perspective view of a vascular stenosis device according to the present invention.

FIG. 2 is a side sectional view of a device for vascular stenosis according to the present invention.

[Explanation of symbols]

 1 Body 2 Grip 3 Thread Holding 4 Threading Space 5 Blood Vessel 6 Thread

Claims (2)

[Scope of utility model registration request] 1. A hemostatic device for vascular anastomosis comprising a crescent-shaped body portion and a grip portion extending from the rear end of the body portion, wherein the side surface of the body portion has a width from the rear end toward the front end. The thread is gradually narrowed, and a thread holding portion is provided on the distal end side of the body portion, and a thread hooking space portion is provided on the proximal end of the grip portion. Device for vascular stenosis arranged so as to reach the threading space through the upper surface of the grip portion extending from the. 2. The device for vascular stenosis according to claim 1, wherein the threading space portion comprises a cutout portion provided in the major axis direction of the grip portion.