CN212939836U

CN212939836U - Inferior vena cava blocking forceps for liver transplantation operation

Info

Publication number: CN212939836U
Application number: CN201921488736.2U
Authority: CN
Inventors: 朱晓丹; 臧运金
Original assignee: Affiliated Hospital of University of Qingdao
Current assignee: Affiliated Hospital of University of Qingdao
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2021-04-13
Anticipated expiration: 2029-09-06

Abstract

The utility model provides a liver transplantation operation is with inferior vena cava blocking pincers, including forearm, pivot and postbrachium, the forearm front end is the clamping part, and the postbrachium end is provided with indicates the ring, clamping part and postbrachium are all to one side bending on the operation surface. The utility model discloses this block pincers clamping part and postbrachium all in the crooked setting of operation face, the clamping part can bypass the blood vessel on inferior vena cava upper portion when operating to be convenient for free the tissue of its top, reduce the damage to tissue and blood vessel on every side. The rear arm is set to be bent, so that a space is reserved for the lower visceral organs, the liver transplantation operation can be conveniently carried out, and the blocking forceps can also be used for carrying out the blood vessel blocking operation in other operations.

Description

Inferior vena cava blocking forceps for liver transplantation operation

Technical Field

The utility model belongs to the field of medical equipment, especially, relate to a liver transplantation operation blocks pincers with inferior vena cava.

Background

The liver transplantation operation is a surgical treatment means for implanting a healthy liver into a patient body through an operation to ensure that the liver function of the patient with the end-stage liver disease is well recovered. In brief, after the diseased liver is removed from the patient, the donor liver is implanted into the recipient (patient) at the site where the original liver was located according to the normal anatomy of the human body. In operation, when a transplantation surgeon removes a diseased liver and implants a new liver, the hepatic vein/inferior vena cava of the donor liver needs to be re-anastomosed with the inferior vena cava of the recipient, so that new hepatic blood flow can smoothly return to the right atrium. In this procedure, it is necessary to block the blood flow in the hepatic/inferior vena cava, and a vessel blocking clamp is used.

The existing blood vessel blocking forceps comprise a rotating shaft at a cross point, wherein the front end of the rotating shaft is a forearm, the forearm is used for clamping a blood vessel, and saw teeth are arranged on the opposite surfaces of two clamping parts positioned at the front end of the forearm, so that the blood vessel is conveniently fixed; the rear end of the rotating shaft is a rear arm, and a finger ring sleeve is arranged at the tail end of the rear arm, so that the blocking forceps can be conveniently held by hands. When the blocking forceps are unfolded, the front arm and the rear arm form an X shape, and the plane of the X shape is called an operation surface. When performing an operation in the abdominal cavity, in order to facilitate the contact of the clamping end with the blood vessel in the abdominal cavity, some hemostatic forceps bend the clamping end in a direction perpendicular to the operation surface, and the blocking forceps as disclosed in CN201453318U and CN2877586U are all of such structures. When the liver transplantation operation is carried out, the inferior vena cava is positioned below blood vessels and tissues at the position, so that the blocking forceps need to separate the tissues and bypass the upper blood vessels to clamp the inferior vena cava, the X-plane for expanding and combining the blocking forceps is positioned in the vertical direction, and the tissues and the blood vessels above the inferior vena cava are easily damaged due to the fact that the clamping part is the straight arm; meanwhile, the rear arm is a straight arm which easily presses the viscera below, so that the operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model discloses block the technical problem that pincers are not convenient for abdominal cavity operation to current blood vessel, provide a clamping part and postbrachium all in the crooked setting in the operation plane, the inferior vena cava that goes on of the liver transplantation operation of being convenient for blocks pincers.

In order to achieve the above object, the utility model discloses a technical scheme be:

the utility model provides a liver transplantation operation is with inferior vena cava blocking pincers, includes forearm, pivot and postbrachium, and the forearm front end is the clamping part, and the postbrachium end is provided with the finger ring circle, clamping part and postbrachium are all to one side bending on the operation surface.

Preferably, the clamping portion is bent in the same direction as the rear wall.

Preferably, the clamping portion is bent in a direction opposite to the rear wall.

Preferably, the holding portion is bent in a direction perpendicular to the operation surface.

Preferably, the included angle between the clamping part and the rear arm is 110-170 degrees.

Preferably, the included angle between the clamping part and the rear arm is 120-135 degrees.

Preferably, the inner sides of the two rear arms are provided with fixing pieces, and the opposite surfaces of the two fixing pieces are provided with friction grains.

Preferably, the curved portion of the clamping portion is in the shape of a circular arc having a radius of curvature of 70-85mm

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

the blocking forceps are characterized in that the blocking forceps are provided with a clamping part and a rear arm, the clamping part is arranged in a bending mode in the operating plane, and the clamping part can bypass the blood vessel on the upper portion of the inferior vena cava when being operated, is convenient for dissociating the tissue above the clamping part, and reduces the damage to the surrounding tissue and the blood vessel. The rear arm is set to be bent, so that a space is reserved for the lower visceral organs, the liver transplantation operation can be conveniently carried out, and the blocking forceps can also be used for carrying out the blood vessel blocking operation in other operations.

Drawings

FIG. 1 is a perspective view of the inferior vena cava blocking forceps of the present invention;

FIG. 2 is a top view of the inferior vena cava blocking forceps of the present invention;

FIG. 3 is a front view of the inferior vena cava blocking forceps of the present invention;

FIG. 4 is a view showing the deployed state of the inferior vena cava occlusion forceps of the present invention;

fig. 5 is a schematic structural view of another form of inferior vena cava blocking forceps of the present invention.

In the above figures: 1. a forearm; 11. a clamping portion; 12. saw teeth; 13. a groove; 2. a rotating shaft; 3. a rear arm; 4. a finger ring; 5. a fixing sheet; 51. and (5) rubbing the lines.

Detailed Description

For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings and examples.

Example (b): as shown in fig. 1-3, an inferior vena cava blocking forceps for liver transplantation comprises a front arm 1, a rotating shaft 2 and a rear arm 3, wherein the front end of the front arm 1 is a clamping part, and the tail end of the rear arm 3 is provided with a finger ring 4. When the front arm 1 and the rear arm 3 of the blocking forceps are both straight arms, the blocking forceps are in an X shape in the unfolded state, an X-shaped plane formed by the front arm 1 and the rear arm 3 is defined as an operation plane (i.e., an XY plane shown in FIG. 3), and the rear arm 3 slides in the plane to realize the clamping and loosening of the clamping part 11. In practice, the operation surface of the blocking forceps is vertical, that is, the two forearms 1 and the two hind arms 3 are both one above the other, and the inferior vena cava is clamped between the clamping parts 11 of the two forearms 1. The opposite surfaces of the two clamping parts 11 are provided with sawteeth 12, the middle parts of the inner sides of the two clamping parts 11 are provided with grooves 13, and the sawteeth 12 and the grooves 13 can enable the clamping parts 11 to well clamp blood vessels and have small damage to the blood vessels. The inner sides of the two rear arms 3 are respectively provided with a fixing piece 5, the opposite surfaces of the two fixing pieces 5 are provided with friction grains 51, and the fixing pieces 5 enable the blocking forceps to be not easy to separate in a clamping state for a long time.

Since the clamping portion 11 of the conventional vessel occlusion forceps is configured as a straight arm, which is likely to damage tissues and vessels above the inferior vena cava, the clamping portion 11 of the present embodiment is configured as a curved shape in the operating surface, in particular, as an arc shape having a curvature radius of 202 mm. By adopting the design, the clamping part 11 can bypass the blood vessel at the upper part of the inferior vena cava when in operation, is convenient to free the tissue above the blood vessel, and reduces the damage to the surrounding tissue and the blood vessel. Meanwhile, if the rear arm 3 is a straight arm, abdominal cavity operation is easy to press the lower viscera, and the operation is inconvenient. The rear arm 3 of this embodiment is curved in the operating plane, in particular in the form of a circular arc opposite to the direction of curvature of the gripping part 11, with a radius of curvature of 81mm, although other curves according to anatomy may be used. The rear arm 3 is bent to reserve a space for the lower viscera, so that the liver transplantation operation is convenient. The curvature of the clamping part 11 and the rear arm 3 can be adjusted according to the body type of the operator and the size of the whole blocking forceps, so that the operation is convenient. As shown in fig. 4, the gripping portion 11 is bent in the same direction as the bending direction of the rear arm 3, and such a blocking forceps is suitable for operation from the left side.

As a further improvement, the clamping part 11 is bent towards a non-operation surface, namely, is bent towards the Z direction, so that the clamping part 11 can better contact with the inferior vena cava, and the phenomenon that the sight of the forceps and the hands is blocked during operation is avoided. According to human anatomy, the plane of the clamping portion 11 is preferably at an angle α of 110-.

The blocking forceps clamping part 11 and the rear arm 3 are arranged in a bending mode in the operation surface, and when the blocking forceps clamping part 11 is operated, the blood vessel on the upper portion of the inferior vena cava can be bypassed, the tissue above the blocking forceps clamping part can be conveniently dissociated, and damage to the surrounding tissue and the blood vessel is reduced. The rear arm 3 is bent to leave a space for the lower viscera, so that the liver transplantation operation can be conveniently carried out, and the blocking forceps can also be used for carrying out the blood vessel blocking operation in other operations.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a liver transplantation operation is with inferior vena cava blocking pincers, includes forearm, pivot and postbrachium, and the forearm front end is the clamping part, and the postbrachium end is provided with indicates the ring circle, its characterized in that: the clamping portion and the rear arm are both bent to one side in the operation surface.

2. The inferior vena cava blocking forceps for liver transplantation surgery according to claim 1, wherein: the clamping part and the rear wall are bent in the same direction.

3. The inferior vena cava blocking forceps for liver transplantation surgery according to claim 1, wherein: the clamping portion is bent in the direction opposite to the bending direction of the rear wall.

4. The inferior vena cava blocking forceps for liver transplantation surgery according to claim 1, wherein: the inner sides of the two rear arms are provided with fixing pieces, and the opposite surfaces of the two fixing pieces are provided with friction grains.

5. The inferior vena cava blocking forceps for liver transplantation surgery according to claim 1, wherein: the bending part of the clamping part is arc-shaped, and the curvature radius of the arc is 70-85 mm.