CN110811730A - Rivet type blood vessel anastomosis device - Google Patents

Abstract

A rivet-style vascular anastomosis device, comprising: the anastomosis ring I is cylindrical, and the outer side surface of one end of the anastomosis ring I is provided with a plurality of convex bodies I; the second anastomosis ring is consistent with the first anastomosis ring in shape and size, a plurality of second convex bodies are arranged on the outer side face of one end of the second anastomosis ring, and one end of the second anastomosis ring, which is provided with the second convex bodies, is involuted with one end of the first anastomosis ring, which is provided with the first convex bodies; the C-shaped external fixing I is in a half-cylinder shape, a first riveting hole is formed in the edge of one side, a second riveting hole is formed in the edge of the other side, and the C-shaped external fixing I is sleeved outside the involutory first anastomosis ring and the involutory second anastomosis ring; and the C-shaped external fixing II is in a half-cylinder shape, a first rivet is arranged at the edge of one side, a second rivet is arranged at the edge of the other side, and is sleeved outside the involutive first anastomosis ring and the involutive second anastomosis ring, wherein the first rivet is matched with the first riveting hole, the second rivet is matched with the second riveting hole to realize the connection of the second C-shaped external fixing II and the first C-shaped external fixing, and the second C-shaped external fixing and the first C-shaped external fixing form a complete cylinder. The invention follows the existing blood vessel anastomosis principle, and has simple manufacture and convenient operation.

Description

Rivet type blood vessel anastomosis device

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a rivet type blood vessel anastomosis device.

Background

The vascular anastomosis reconstruction has important value and significance for restoring organ functions, and the vascular anastomosis operation is the most common and important basic operation in modern surgical operations. The rapid vascular anastomosis technology is more important in the operations of organ transplantation, tumor invasion and vascular excision reconstruction and the like.

At present, there are two main clinical methods of vascular anastomosis: the traditional suture anastomosis method (manual suture) and the anastomosis method of the vascular anastomosis instrument. To date, manual suturing remains the most clinically fundamental and most commonly used method of vascular anastomosis. The skill requirement of an operator is high, and even a doctor with good surgical technique and a plurality of times of surgical training for a long time needs 5 to 30 minutes for manually anastomosing each anastomotic stoma. When the number of blood vessels needing to be anastomosed in the operation is large, the operation time is longer. Some vascular anastomoses need to be performed under extracorporeal circulation, which can cause great negative effects to patients for a long time. Even if extracorporeal circulation assistance is not required, prolonged anesthesia and surgery can cause significant shock to the patient. On the other hand, the long-time vascular anastomosis can cause the operator to be very tired, the error rate of vascular anastomosis is increased when the body of the operator is tired and the mood of the operator is irritated, and the operation risk is increased. In some procedures, vascular anastomosis can compete for seconds. For example, in organ transplantation, the ischemia time of donor organ cannot be too long, the operation takes seconds, and the length of the operation is closely related to the healing time. With conventional manual suturing, even after intensive training of the suturing technique is performed on the surgeon, it is still difficult to significantly reduce the operation time. The transmission manual suture vascular anastomosis operation has the advantages of high operation difficulty and low efficiency, and the anastomosis precision and reliability of the operation are difficult to effectively guarantee.

With the development of the manufacturing process of medical instruments and the emergence of new materials, the anastomosis technology of the vascular anastomat is developed rapidly. Various vascular anastomoses appear in succession, the common structure of the vascular anastomoses is a needle ring structure, and the 73-2 type vascular anastomoses is taken as a representative, so that great convenience is brought to clinic, but metal foreign bodies remain in the body, and the examination of nuclear magnetic resonance of a patient later is influenced. Since the Chinese patent ZL 201310111076.7 discloses a large blood vessel anastomat, the large blood vessel anastomat adopts a fixing mode of a clamp body and a tooth buckle, although the structure is relatively simple, the accuracy of an operation position is low, particularly the attaching degree of an anastomotic blood vessel is difficult to ensure, the accuracy of an anastomotic angle and the position of the blood vessel cannot be ensured, and the difficulty of disassembly and assembly after operation is also high. For example, the blood vessel anastomat of chinese patent application No. 201710434374.8 has a complex structure, and when a blood vessel B is inserted into a blood vessel a, it is used for blood vessels of different calibers, which is likely to cause thrombosis risk. And the vascular anastomosis device with other structures has a common and complex structure and is inconvenient to operate.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a rivet-type vascular anastomotic device.

In order to achieve the purpose, the invention adopts the technical scheme that:

a rivet-style vascular anastomosis device, comprising:

the anastomosis ring I1 is cylindrical, and the outer side surface of one end of the anastomosis ring I is provided with a plurality of convex bodies I2;

the anastomosis ring II 4 is consistent with the anastomosis ring I1 in shape and size, a plurality of convex bodies II 6 are arranged on the outer side face of one end of the anastomosis ring II, and one end of the anastomosis ring II 4 with the convex bodies II 6 is involuted with one end of the anastomosis ring I1 with the convex bodies I2;

the C-shaped external fixing I7 is in a half-cylinder shape, a riveting hole I8 is arranged at the edge of one side, a riveting hole II 14 is arranged at the edge of the other side, and the C-shaped external fixing I7 is sleeved outside the involuted anastomosis ring I1 and the involuted anastomosis ring II 4;

the C-shaped external fixing device 10 is in a half-cylinder shape, a first rivet 11 is arranged at the edge of one side of the C-shaped external fixing device 10, a second rivet 15 is arranged at the edge of the other side of the C-shaped external fixing device 10, the C-shaped external fixing device 10 is sleeved outside the involuted anastomosis ring 1 and the involuted anastomosis ring 4, the first rivet 11 is matched with the first rivet hole 8, the second rivet 15 is matched with the second rivet hole 14, connection of the C-shaped external fixing device 10 and the C-shaped external fixing device 7 is achieved, and the C-shaped external fixing device 10 and the C-shaped external fixing device 7 form a complete cylinder.

The side surface of the anastomosis ring I1 is provided with a first concave part 3 convenient for being clamped by hemostatic forceps, and the side surface of the anastomosis ring II 4 is provided with a second concave part 5 convenient for being clamped by the hemostatic forceps.

The first convex body 2 and the second convex body 6 are both in barb structures, and on the involuted anastomotic ring 1 and the involuted anastomotic ring 4, the barb directions of the first convex body 2 and the second convex body 6 are opposite.

The both ends of C type external fixation 7 are provided with and keep off groove 9, the both ends of C type external fixation two 10 are provided with keep off groove two 13, keep off groove one 9 and keep off groove two 13 and be the semicircle annular, keep off the outer edge of groove one 9 and the end part inner wall connection of C type external fixation one 7, keep off the outer edge of groove two 13 and the outer 10 end part inner wall connections of C type external fixation two, C type external fixation two 10 and C type external fixation one 7 are connected the back, keep off the centre bore between groove one 9 and the fender groove two 13 and supply the blood vessel to pass through.

The invention can also comprise 4 arc-shaped gaskets 12, and the arc-shaped gaskets 12 are padded at the inner walls of the first blocking groove 9 and the second blocking groove 13 to limit the axial movement of the first anastomosis ring 1 and the second anastomosis ring 4.

The two ends of the anastomosis ring I1 and the anastomosis ring II 4 after anastomosis are provided with annular convex edges, the first blocking groove 9 and the second blocking groove 13 are of double-layer structures, grooves capable of being placed into the annular convex edges are formed between the layers, and the annular convex edges are placed into the grooves, so that the anastomosis ring I1 and the anastomosis ring II 4 are positioned and temporarily fixed.

And auxiliary inclined thorns are arranged on the outer side surfaces of the first convex body 2 and/or the second convex body 6, the auxiliary inclined thorns are consistent with the inclined direction of the first convex body 2 or the second convex body 6, and the angle of the auxiliary inclined thorns and the axial included angle of the anastomosis ring is larger than that of the first convex body 2 or the second convex body 6 and the anastomosis ring.

Compared with the prior art, the invention has the beneficial effects that:

1. the blood vessel anastomosis method is simple to manufacture and convenient to operate, and the existing blood vessel anastomosis principle is followed.

2. The anastomosis device is made of degradable biological materials and is kept in the body for a certain time, and no foreign matters are left in the body after the vascular anastomosis opening is completely healed and degraded.

Drawings

Figure 1 illustrates a first anastomosis ring according to the present invention.

Figure 2 illustrates a second embodiment of an anastomosis ring in accordance with the present invention.

Figure 3 illustrates an axial view (enlarged convex) of an anastomosis ring, or rings, according to the present invention.

Fig. 4 is a schematic view of the type C external fixation device of the present invention (two side views are shown in a plan view for convenience of illustration).

FIG. 5 is a schematic view of the C-shaped external fixture of the present invention (for convenience of illustration of the two-sided structure, the two-sided view is a plane view).

Fig. 6 is a schematic structural view of the arc gasket of the present invention.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the drawings and examples.

The invention relates to a rivet type blood vessel anastomosis device, which comprises:

an anastomosis ring 1, referring to fig. 1 and 3, is cylindrical, and has a recess portion one 3 on a side surface thereof for being clamped by hemostatic forceps, the exterior side surface of one end of the anastomosis ring 1 is provided with a plurality of convex bodies one 2, the convex bodies one 2 can be in a shape of a column with a smooth top end, or an oblique column with a smooth top end (diffusing outwards from the end of the anastomosis ring 1), or a circular truncated cone with a smooth top end, and the exterior side surface of the anastomosis ring 1 is encircled into a plurality of circles, wherein each circle has a plurality of dispersed convex bodies one 2.

The second anastomosis ring 4, referring to fig. 2 and 3, has the same shape and size as the first anastomosis ring 1, and has a second concave portion 5 on the side for being clamped by hemostatic forceps, the second anastomosis ring 4 has a plurality of second convex bodies 6 on the outer side of one end thereof, the dispersed form, shape and the like of the second convex bodies 6 are the same as the first convex bodies 2, and the end of the second anastomosis ring 4 with the second convex bodies 6 is involuted with the end of the first anastomosis ring 1 with the first convex bodies 2. If the convex body I2 and the convex body II 6 are in the shape of a slant column with smooth top ends, that is, a structure similar to a barb is formed, the barb directions of the convex body I2 and the convex body II 6 are opposite on the involutive anastomotic ring I1 and the involutive anastomotic ring II 4.

The first C-shaped external fixing part 7 is in a half-cylinder shape, referring to fig. 4, a riveting hole I8 is formed in the edge of one side, a riveting hole II 14 is formed in the edge of the other side, semicircular retaining grooves I9 are formed in two ends of the first C-shaped external fixing part, the outer edges of the retaining grooves I9 are connected with the inner wall of the end part of the first C-shaped external fixing part 7, and the first C-shaped external fixing part 7 is enabled to be sleeved outside the involutory anastomotic ring I1 and the involutory ring II 4.

The C-shaped external fixing device 10 is in a half-cylinder shape, referring to fig. 5, a first rivet 11 is arranged on the edge of one side, a second rivet 15 is arranged on the edge of the other side, semicircular retaining grooves 13 are formed in two ends of the first rivet 11, the outer edges of the retaining grooves 13 are connected with the inner wall of the end portion of the C-shaped external fixing device 7, the size of the C-shaped external fixing device 10 enables the C-shaped external fixing device to be sleeved outside the involuted anastomosis ring I1 and the anastomosis ring II 4, the first rivet 11 is matched with the first riveting hole I8, the second rivet 15 is matched with the second riveting hole I14, connection of the C-shaped external fixing device 10 and the C-shaped external fixing device I7 is achieved, and the C-shaped external fixing device II 10 and the C-shaped external. After the C-shaped external fixing I10 is connected with the C-shaped external fixing I7, a central hole between the first blocking groove I9 and the second blocking groove 13 is used for blood vessels to pass through.

In a preferred embodiment of the present invention, annular convex edges are disposed at two ends (i.e., the end of the anastomosis ring not provided with the oblique spine) of the anastomosis ring 1 and the anastomosis ring two 4 after the anastomosis ring is anastomosed, the first blocking groove 9 and the second blocking groove 13 are both of a double-layer structure, a groove capable of being placed in the annular convex edge is formed between the layers, and the annular convex edge is placed in the groove, so that the positioning and the temporary fixation of the anastomosis ring 1 and the anastomosis ring two 4 can be realized.

According to the structure, the working process of the invention is as follows:

clamping the first sunken part 3 on the anastomosis ring I1 by using a hemostatic forceps clamp, sleeving the broken end of the blood vessel on one side, turning the broken end of the blood vessel outwards and hanging the broken end of the blood vessel on the first convex body 2, clamping the second sunken part 5 on the anastomosis ring II 4 by using the hemostatic forceps clamp in the same way, sleeving the broken end of the blood vessel on the other side, and turning the broken end of the blood vessel outwards and hanging the broken end of the blood vessel on the second convex body 6; then placing the C-shaped external fixation ring I7 on the outer side surfaces of the anastomosis ring I1 and the anastomosis ring II 4, loosening the vascular blocking clamps or blocking forceps at the two ends to ensure that no thrombus or gas exists, matching the anastomosis ring I1 and the anastomosis ring II 4, and then embedding the anastomosis ring I1 and the anastomosis ring II 4 in the C-shaped external fixation ring I7, wherein if the anastomosis ring I1 and the anastomosis ring II 4 are tightly embedded, no blood seeps out from a gap; if the embedding is not tight, blood seeps out from a gap between the first anastomosis ring 1 and the second anastomosis ring 4, finally the other half of the C-shaped external fixing ring 10 is buckled on the C-shaped external fixing ring 7, the rivet I11 and the rivet I8 on one side of the C-shaped external fixing ring are firstly riveted, then the rivet II 15 and the rivet II 14 on the other side of the C-shaped external fixing ring are pushed, the first anastomosis ring 1 and the second anastomosis ring 4 are encircled by the C-shaped external fixing ring 7 and the C-shaped external fixing ring 10, and the anastomosis of the blood vessels is finished.

Further, when the blocking groove is arranged, the first blocking groove 9 and the second blocking groove 13 axially restrict the movement of the first anastomosis ring 1 and the second anastomosis ring 4, so that the first anastomosis ring and the second anastomosis ring can be conveniently restricted after being placed, four C-shaped gaskets 12 shown in fig. 6 can be respectively placed between the blocking groove and the anastomosis ring, and the C-shaped gaskets 12 can be cut according to requirements so as to ensure that no blood seeps out between the two anastomosis rings. Wherein, when keeping off groove one 9 and keeping off the groove two 13 and be bilayer structure, can further do benefit to and inlay fixedly, if do not adopt bilayer structure, set up a reference column at the outer wall of ring one 1 that coincide and ring two 4 that coincide, and the C type external fixation 7 medial surface sets up a locating hole and can realize inlaying.

In the invention, the thicknesses of the first baffle groove 9 and the C-shaped gasket 12 are less than the lengths of the first anastomosis ring 1 and the second anastomosis ring 4, and the thicknesses of the first convex body 2, the second convex body 6 and the vessel wall do not influence the integral rivet.

Further, an auxiliary oblique spine may be disposed on the outer side surface of the first convex body 2 and/or the second convex body 6, as shown in fig. 2, the auxiliary oblique spine is inclined in the same direction as the first convex body 2 or the second convex body 6, but the angle between the auxiliary oblique spine and the anastomotic ring is larger than the angle between the first convex body 2 or the second convex body 6 and the anastomotic ring, for example, the angle between the auxiliary oblique spine and the first convex body 2 or the second convex body 6 may be 15 °. The purpose of arranging the auxiliary oblique stabs is to ensure that when the broken end of the blood vessel is outwards turned to be hung on the first convex body 2 or the second convex body 6, once the broken blood vessel falls off from the first convex body 2 or the second convex body 6, the auxiliary oblique stabs play a role in secondary fixation, namely, the broken end of the fallen blood vessel can be blocked by the auxiliary oblique stabs, so that the falling is prevented, and the outwards turning fixation performance of the blood vessel is enhanced.

The vascular anastomosis device is made of degradable high polymer materials or biodegradable chitosan or magnesium alloy, is kept in a body for a certain time, and is degraded after the vascular anastomosis opening is completely healed, so that no foreign matters are left in the body.

Claims (7)

1. A rivet-type vascular anastomosis device, comprising:

the anastomosis ring I (1) is cylindrical, and the outer side surface of one end of the anastomosis ring I is provided with a plurality of convex bodies I (2);

the anastomosis ring II (4) is consistent with the anastomosis ring I (1) in shape and size, a plurality of convex bodies II (6) are arranged on the outer side face of one end of the anastomosis ring II, and one end of the anastomosis ring II (4) with the convex bodies II (6) is involuted with one end of the anastomosis ring I (1) with the convex bodies I (2);

the C-shaped external fixing I (7) is in a half-cylinder shape, a riveting hole I (8) is formed in the edge of one side, a riveting hole II (14) is formed in the edge of the other side, and the C-shaped external fixing I (7) is sleeved outside the involutory anastomosis ring I (1) and the involutory anastomosis ring II (4);

and the C-shaped external fixing second (10) is in a half-cylinder shape, a rivet first (11) is arranged at the edge of one side, a rivet second (15) is arranged at the edge of the other side, the C-shaped external fixing second (10) is sleeved outside the involuted anastomotic ring first (1) and the involuted anastomotic ring second (4), the rivet first (11) is matched with the riveting hole first (8), the rivet second (15) is matched with the riveting hole second (14) to realize the connection of the C-shaped external fixing second (10) and the C-shaped external fixing first (7), and the C-shaped external fixing second (10) and the C-shaped external fixing first (7) form a complete cylinder.

2. A rivet-type vascular anastomosis device, according to claim 1, wherein said anastomosis ring (1) has, on a lateral side thereof, a first recess (3) for facilitating clamping by hemostats, and wherein said anastomosis ring (4) has, on a lateral side thereof, a second recess (5) for facilitating clamping by hemostats.

3. A rivet type blood vessel anastomosis device according to claim 1, wherein the first projection (2) and the second projection (6) are of a barb structure, and the barbs of the first projection (2) and the second projection (6) are opposite in direction on the anastomosis ring I (1) and the anastomosis ring II (4) after anastomosis.

4. A rivet type vascular anastomosis device according to claim 1, wherein the first blocking groove (9) is formed at each end of the first C-shaped external fixation member (7), the second blocking groove (13) is formed at each end of the second C-shaped external fixation member (10), the first blocking groove (9) and the second blocking groove (13) are both semi-circular rings, the outer edge of the first blocking groove (9) is connected with the inner wall of the end portion of the first C-shaped external fixation member (7), the outer edge of the second blocking groove (13) is connected with the inner wall of the end portion of the second C-shaped external fixation member (10), and after the second C-shaped external fixation member (10) is connected with the first C-shaped external fixation member (7), a central hole between the first blocking groove (9) and the second blocking groove (13) is used for blood vessels to pass through.

5. A rivet type vascular anastomosis device according to claim 4, further comprising 4 arcuate spacers (12), said arcuate spacers (12) being seated against the inner walls of the first (9) and second (13) recesses to limit axial movement of the anastomosis ring (1) and the anastomosis ring (4).

6. A rivet type blood vessel anastomosis device according to claim 4, wherein annular convex edges are arranged at the two ends of the anastomosis ring I (1) and the anastomosis ring II (4) after the anastomosis ring I and the anastomosis ring II are anastomosed, the blocking groove I (9) and the blocking groove II (13) are of a double-layer structure, grooves capable of being placed in the annular convex edges are formed between the layers, and the annular convex edges are placed in the grooves, so that the anastomosis ring I (1) and the anastomosis ring II (4) are positioned and temporarily fixed.

7. A rivet type vascular anastomosis device, according to claim 1, wherein said first projection (2) and/or said second projection (6) is/are provided with auxiliary barbs on the outer side, said auxiliary barbs being aligned with the direction of inclination of said first projection (2) or said second projection (6), but having an axial angle with the anastomosis ring which is greater than the axial angle of said first projection (2) or said second projection (6) with the anastomosis ring.

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