Blood vessel fixing ribbon

Abstract

The utility model provides a blood vessel fixing ribbon. The blood vessel fixing ribbon comprises a first binding part, a second binding part, a transition part, a locking part and a guide part, the second binding part and the transition part are connected to the two ends of the first binding part in the length direction respectively, the locking part is arranged at the end, away from the first binding part, of the transition part, the guiding part is connected to the end, away from the first binding part, of the second binding part, and the whole ribbon is in a long strip shape. The transition part is provided with a first opening, and the locking part is provided with a second opening. According to the blood vessel fixing ribbon, the blood vessel can be effectively prevented from making contact with any hard surface and generating stress concentration, the available length of the blood vessel is increased, transplantation operation is facilitated, and the blood vessel can be more conveniently fixed and released by adjusting the contraction strength of the first binding part.

Description

Technical Field

[0001] The utility model belongs to the technical field of instruments for organ transplantation surgery, and in particular relates to a blood vessel fixing tie. Background Art

[0002] Organ transplantation technology is an effective method for treating end-stage organ failure. Organs such as the kidney, heart, liver, pancreas, and lungs need to be perfused before transplantation surgery. The specific method is to connect the blood vessels of the organ to the perfusion pipeline and use specific perfusion fluid for in situ perfusion or mechanical perfusion.

[0003] Before perfusion, the clinical practice is generally to insert the perfusion line into the human blood vessel and tie the blood vessel with surgical thread. However, the use of surgical thread may cause stress concentration on the blood vessel wall, thereby damaging the blood vessel and shortening the available length of the blood vessel, which is not conducive to the transplantation operation. In addition, the surgical thread makes the operation of tying and releasing the blood vessel relatively complicated.

[0004] Therefore, there is a need for a binding structure that does not cause damage to blood vessels and can conveniently fix and release blood vessels. Utility Model Content

[0005] The utility model provides a blood vessel fixing tie which will not cause damage to the blood vessel and can conveniently fix and release the blood vessel.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A blood vessel fixing band comprises a first binding portion, a second binding portion, a transition portion, a locking portion and a guiding portion.

[0008] The first binding portion and the transition portion are adapted to contact the outer wall of the blood vessel;

[0009] The second bundling portion and the transition portion are respectively connected to the two ends of the first bundling portion in the length direction, the locking portion is connected to the end of the transition portion away from the first bundling portion, the guiding portion is connected to the end of the second bundling portion away from the first bundling portion, and the cable tie is in a long strip shape as a whole;

[0010] The transition portion is provided with a first opening, and the first binding portion is suitable for passing through the first opening and surrounding the outer wall of the blood vessel;

[0011] The locking portion is provided with a second opening, and the second binding portion is suitable for passing through the second opening and being locked or unlocked with the locking portion.

[0012] Furthermore, the surfaces of the first bundling portion and the transition portion are both coated with a soft material with good biocompatibility, and the soft material with good biocompatibility is one or more of medical silicone, medical-grade PVC, polyethylene, PEEK, and polycarbonate.

[0013] Furthermore, a surface of the second bundling portion is provided with belt teeth, and a buckle is provided in the second opening of the locking portion, and the belt teeth and the buckle cooperate to achieve locking or unlocking.

[0014] Further, the width of the second bundling portion is greater than the width of the first bundling portion.

[0015] Furthermore, the length of the first bundling portion is 3-3.5 cm, and the width is 3-3.5 cm; the length of the second bundling portion is 4-4.5 cm, and the width is 4-4.5 mm.

[0016] Further, the locking portion is rotatably connected to the transition portion via a connecting portion, and a thickness of the connecting portion is smaller than a thickness of the transition portion and the locking portion.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The first binding part softly contacts the outer wall of the blood vessel and fixes the blood vessel. Compared with the surgical thread, the first binding part has a larger contact area with the blood vessel, which effectively avoids the blood vessel from contacting any hard surface and causing stress concentration, increases the available length of the blood vessel, and is conducive to the transplantation operation;

[0019] 2. By adjusting the length of the second bundling part passing through the second opening and / or the length of the second bundling part covering the first bundling part, the operator can adjust the contraction strength of the first bundling part, so as to more conveniently fix and release the blood vessel;

[0020] 3. The belt teeth on the surface of the second bundling part are engaged with the buckle of the locking part, and the width of the second bundling part is greater than that of the first bundling part, so that the fixing effect of the cable tie is better;

[0021] 4. The connection between the transition part and the locking part can be bent to facilitate the second binding part to pass through the second opening; the thickness of the connection of the locking part is small and can be directly cut with surgical scissors, which is convenient for the surgeon to release the blood vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a schematic diagram of the overall structure of a blood vessel fixing tie according to an embodiment of the utility model.

[0023] Figure 2 It is a schematic diagram of the injection joint in the embodiment of the utility model.

[0024] In the figure, 1-first bundling part; 2-second bundling part; 21-belt teeth; 3-transition part; 31-first opening; 4-locking part; 41-second opening; 42-buckle; 5-guiding part; F, F'-soft material; H-connecting part; G-injection pipeline joint. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. However, the embodiments described below are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model.

[0026] Figure 1 An embodiment of a blood vessel fixing tie is shown, which mainly includes a first binding part 1, a second binding part 2, a transition part 3, a locking part 4 and a guide part 5. The blood vessel fixing tie of this embodiment is mainly used for perfusion operation before organ transplantation surgery. After the perfusion pipeline is inserted into the blood vessel, the perfusion pipeline is fixed in the blood vessel by the tie to prevent the leakage of the perfusion fluid. Of course, the tie can also be used in any other surgical occasions that require fixing or tightening blood vessels, including but not limited to repairing bleeding sites in patients, fixed connection between artificial blood vessels and arterial blood vessels, etc.

[0027] like Figure 1 As shown, the first binding part 1 is the main part of the blood vessel fixing band, the second binding part 2 and the transition part 3 are respectively connected to the two ends of the length direction of the first binding part 1, the locking part 4 is arranged at the end of the transition part 3 away from the first binding part 1, and the guide part 5 is connected to the end of the second binding part 2 away from the first binding part 1, and the band is in the shape of a long strip as a whole. The first binding part 1 and the second binding part 2 are both strip-shaped structures. Therefore, when the first binding part 1 is fixed around the outer wall of the blood vessel, compared with the general surgical line, the contact area between the first binding part 1 and the blood vessel is larger, which disperses the stress on the blood vessel, thereby effectively avoiding stress concentration.

[0028] The first binding part 1 and the transition part 3 are the parts that are in direct contact with the outer wall of the blood vessel. In order to further protect the blood vessel, the surfaces of the first binding part 1 and the transition part 3 are coated with a soft material F' with good biocompatibility. The soft material can be selected from medical silicone, medical grade PVC, polyethylene, PEEK, polycarbonate, etc. Therefore, when the first binding part 1 and the transition part 3 are fixedly attached to the outer wall of the blood vessel, the first binding part 1 and the blood vessel are in soft contact, and the blood vessel does not contact any hard surface, which effectively prevents the blood vessel from being damaged and increases the usable length of the blood vessel.

[0029] The transition portion 3 is provided with a first opening 31 , and the shape of the first opening 31 can be rectangular, square, elliptical, etc., as long as its inner diameter matches the width of the second bundling portion 2 . In this embodiment, the shape of the first opening 31 is rectangular.

[0030] The second binding part 2 does not contact the outer wall of the blood vessel, and its function is to fix the first binding part 1 to the blood vessel. When the front of the first binding part 1 is wrapped around the outer wall of the blood vessel, the second binding part 2 passes through the first opening 31 in the same wrapping direction, so that the front of the first binding part 1 covers the outer wall of the blood vessel. The so-called same wrapping direction means that when observed along the axial direction of the blood vessel (that is, the cross-sectional direction of the blood vessel), the front of the first binding part 1 is attached to the outer wall of the blood vessel in a clockwise direction, and accordingly, the second binding part 2 also passes through the first opening 31 from the front of the transition part 3 in a clockwise direction, and the same applies to the counterclockwise direction.

[0031] It should be noted that in this embodiment, the "front" refers to the surface of the vascular fixing band that is in contact with or closer to the blood vessel during the surgical operation, while the "back" is the surface opposite to the "front", that is, farther away from the blood vessel.

[0032] It is understandable that when the front side of the first bundling part 1 covers the outer wall of the blood vessel, the inner diameter of the annular structure formed by the first bundling part 1 is slightly larger than the outer circumference of the blood vessel, leaving a certain length margin to adjust its contraction strength.

[0033] The locking part 4 is provided with a second opening 41, and the inner diameter of the second opening 41 is adapted to the width of the second bundling part 2. After the second bundling part 2 passes through the first opening 31, the second bundling part 2 continues to bypass and cover the first bundling part 1 in the same circling direction and with its front side facing the back side of the first bundling part 1, and passes through the second opening 41 from the front side of the locking part 4. Subsequently, the contraction force of the first bundling part 1 is adjusted by adjusting the length of the second bundling part 2 passing through the second opening 41 and / or the length of the second bundling part 2 covering the first bundling part 1. Specifically, by rotating the second bundling part 2 along the same circling direction, the length of the second bundling part 2 passing through the second opening 41 becomes larger, and the length covering the first bundling part 1 becomes smaller, so that the first bundling part 1 is tightened, and the blood vessel is tightened accordingly. When the second binding part 2 is rotated in the opposite circumferential direction, the length of the second binding part 2 passing through the second opening 41 becomes smaller and the length covering the first binding part 1 becomes larger, thereby loosening the first binding part 1 and the blood vessel accordingly. In this way, the operator can adjust the contraction force of the first binding part 1 through the second binding part 2, thereby tightening and loosening the blood vessel more conveniently.

[0034] It can be understood that the locking portion 4 is configured to be rotatably connected to the transition portion 3 through the connecting portion H. The rotatable connection includes a bendable connection, a pivot connection, etc., as long as the locking portion 4 can be rotated relative to the transition portion 3 along the rotation axis of the connecting portion H. The present embodiment adopts a bendable connection, and the thickness of the connecting portion H is less than the thickness of the transition portion 3 and the locking portion 4. In this way, according to the actual length of the second bundling portion 2, the locking portion 4 is rotated to change the relative position with the transition portion 3, so that the second bundling portion 2 can be more conveniently passed through the second opening 41.

[0035] In this embodiment, the second binding part 2 is provided with a plurality of belt teeth 21, which are evenly distributed along the length direction of the second binding part 2. A buckle 42 is provided in the second opening 41, and the buckle 42 and the belt teeth 21 can realize an unlocked state and a locked state.

[0036] The length of the first bundling portion 1 generally only needs to be enough to wrap around the outer wall of the blood vessel once. If the first bundling portion is longer, it can also wrap around more than one circle. The second bundling portion 2 can be set around the first bundling portion 1 once or more. Taking the arterial blood vessels of the kidney organ in a normal adult as an example, the average circumference is about 2.4 cm, and the blood vessels are relatively fragile. In this embodiment, the length of the first bundling portion is 3.5 cm, the width is 3.5 mm, and the circumference width of the first bundling portion is 5 mm; the length of the second bundling portion is 4.5 cm, and the width is 4 mm. The length of the transition portion is 5.5 mm and the width is 9 mm; the length of the locking portion is 1.1 cm and the width is 1.4 cm. For reference, the adult renal artery can refer to this data. The non-adult renal artery, liver or other organ artery can correspond to different types of cable ties and connectors.

[0037] Specifically, when fixing blood vessels, Figure 2 As shown, the front end of the perfusion line connector G is covered with a soft material F, and the front end of the perfusion line connector G is inserted into the blood vessel, and the blood vessel contacts the soft material F. Then, the first binding part 1 of the blood vessel fixing tie is covered on the surface of the blood vessel, and the guide part 5 is passed through the first opening 31 of the transition part 3 and tightened. After tightening, the first binding part 1 is annular to fix the blood vessel on the front end F of the interface of the perfusion line. Then, the guide part 5 is passed through the opening of the locking part 4 and tightened, so that the second binding part 2 is wrapped around the outside of the first binding part 1, and the belt teeth 21 on the second binding part 2 cooperate with the buckle 42 on the locking part 4 to achieve the locking of the tie. When the operation is completed, unlock the buckle 42 and loosen the first binding part 1 to release the blood vessel. The blood vessel can also be released by cutting the connection H between the transition part 3 and the locking part 4 with surgical scissors.

Claims

1. A blood vessel fixing tie, characterized in that: It includes a first bundling part, a second bundling part, a transition part, a locking part and a guiding part. The first binding portion and the transition portion are adapted to contact the outer wall of the blood vessel; The second bundling portion and the transition portion are respectively connected to the two ends of the first bundling portion in the length direction, the locking portion is connected to the end of the transition portion away from the first bundling portion, the guiding portion is connected to the end of the second bundling portion away from the first bundling portion, and the cable tie is in a long strip shape as a whole; The transition portion is provided with a first opening, and the first binding portion is suitable for passing through the first opening and surrounding the outer wall of the blood vessel; The locking portion is provided with a second opening, and the second bundling portion is suitable for passing through the second opening and being locked or unlocked with the locking portion.

2. A blood vessel fixing tie according to claim 1, characterized in that: The surfaces of the first binding portion and the transition portion are both coated with soft materials with good biocompatibility.

3. A blood vessel fixing tie according to claim 2, characterized in that: The soft material with good biocompatibility is one or more of medical silicone, medical-grade PVC, polyethylene, PEEK, and polycarbonate.

4. A blood vessel fixing tie according to claim 1, characterized in that: The surface of the second bundling portion is provided with belt teeth, and the second opening of the locking portion is provided with a buckle, and the belt teeth and the buckle cooperate to achieve locking or unlocking.

5. A blood vessel fixing tie according to claim 1, characterized in that: The second bundling portion has a width greater than that of the first bundling portion.

6. A blood vessel fixing tie according to claim 1, characterized in that: The length of the first bundling portion is 3-3.5 cm, and the width is 3-3.5 cm; the length of the second bundling portion is 4-4.5 cm, and the width is 4-4.5 mm.

7. A blood vessel fixing tie according to claim 1, characterized in that: The locking portion is rotatably connected to the transition portion through a connecting portion.

8. A blood vessel fixing tie according to claim 7, characterized in that: The thickness of the connecting portion is smaller than the thickness of the transition portion and the locking portion.

Images