Shearing device for anastomosis part of blood vessel bypass surgery

Abstract

The invention provides a vascular bypass anastomosis part shearing device which comprises two shearing parts arranged oppositely, each shearing part comprises an arc-shaped shearing blade, the two shearing blades can move in the normal direction of the plane where the arcs of the two shearing blades are located, and when the two shearing blades move relatively, shearing force can be formed in a staggered mode; the guide pillar is sleeved with the sleeve, and the end of the guide pillar and the end of the sleeve are fixedly connected with the first shearing part and the second shearing part respectively. The arc-shaped or oval cutting edge is arranged on the cutting part, so that medical staff can complete preparation work of a vascular anastomosis part in a small number of times of cutting processes, the modification time of the anastomosis part is shortened, meanwhile, the anastomosis work of the vascular anastomosis part and a bypass blood vessel is more easily completed, and the anastomosis efficiency is improved. Moreover, fine tissue fragments in the anastomotic stoma modification process are reduced, so that the operation quality is improved, and the operation time is shortened.

Description

Technical Field

[0001] The invention belongs to the field of surgical instruments, and in particular relates to a shearing device for anastomotic sites in vascular bypass surgery. Background Art

[0002] Bypass surgery is a treatment method used to deal with insufficient blood supply caused by partial hardening and narrowing of blood vessels in the human body. It establishes a channel between the proximal and distal ends of the diseased blood vessels, allowing blood to bypass the narrowed area and reach the distal end.

[0003] During bypass surgery, in order to connect blood vessels, it is necessary to first block the diseased blood vessels with blocking forceps. Then, a connection port is cut at the proximal and distal ends of the diseased blood vessels to facilitate anastomosis with the bypass vessels. To facilitate smoother blood flow, the connection port is usually elliptical. During the shaping and anastomosis stage of the connection port, experienced doctors are required to modify the interface to achieve better surgical results. However, this will also prolong the operation time and increase the time and pain of blood vessel blockage during surgery. A device that can complete the blood vessel connection port more quickly is needed. In addition, some medical waste will be generated during the process of modifying the blood vessel connection port, which needs to be cleaned up in a timely manner. Summary of the Invention

[0004] In view of this, the present invention aims to provide a shearing device for the anastomotic site of vascular bypass surgery to reduce the processing time of the vascular connection port, improve the efficiency of the surgery, and reduce the difficulty of the surgery.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A shearing device for anastomotic sites during vascular bypass surgery comprises two shearing portions arranged opposite to each other, each of which comprises an arc-shaped shearing blade. The two shearing blades are capable of moving along the normal direction of the plane in which the arc is located, and when the two shearing blades move relative to each other, they can intersect to form a shearing force.

[0007] The sleeve and the guide post are sleeved on the guide post, and the ends of the guide post and the sleeve are fixedly connected to the first shearing portion and the second shearing portion respectively.

[0008] A shearing device for anastomotic sites during vascular bypass surgery comprises two shearing portions disposed opposite to each other, each of which comprises an elliptical shearing blade. The two shearing blades are capable of moving along the normal direction of the plane in which they are located, and when the two shearing blades move relative to each other, they can intersect to form a shearing force.

[0009] The sleeve and the guide post are sleeved on the guide post, and the ends of the guide post and the sleeve are fixedly connected to the first shearing portion and the second shearing portion respectively.

[0010] Furthermore, the first shearing portion and the second shearing portion respectively extend inwardly to form connecting portions, and the sleeve and the guide column are respectively connected to the connecting portions of the first shearing portion and the second shearing portion.

[0011] Furthermore, a through hole is provided on the connecting portion of the second shearing portion, and the guide post can pass through and be fixedly connected to the first shearing portion.

[0012] Furthermore, a bottom plate and a top plate are respectively provided on the side of the first shearing portion and the second shearing portion away from the shearing edge, and the top plate, the bottom plate and the shearing edge surround to form an accommodating space.

[0013] Furthermore, a pressure strip is provided on the top plate, and when the first shearing portion and the second shearing portion move relative to each other to an extreme position, the pressure strip can be pressed tightly against the bottom plate.

[0014] Furthermore, a collar is provided at one end of the guide post away from the first shearing portion, a spring is sleeved on the guide post, and one end of the spring abuts against the collar, and the other end abuts against the end surface of the sleeve.

[0015] Furthermore, a ring is fixed on the side of the sleeve.

[0016] Furthermore, the guide rod is provided with a key block, the sleeve is provided with a key slot, the key block is placed in the key slot and can slide along the length direction of the key slot.

[0017] Compared with the prior art, the anastomotic site shearing device for vascular bypass surgery described in the present invention has the following advantages:

[0018] The present invention adopts an arc-shaped or elliptical shearing blade provided on the shearing portion, so that medical personnel can complete the preparation of the vascular anastomosis site in a small number of shearing processes, thereby reducing the modification time of the anastomosis part, making it easier to complete the anastomosis work of the vascular anastomosis site with the bypass vessel, and reducing the fine tissue debris during the anastomosis modification process, thereby improving the quality of the operation and reducing the operation time;

[0019] The method of leaving the sheared tissue in the accommodation space while completing the shearing reduces the time of cleaning the removed tissue out of the body after shearing;

[0020] A pressure strip is used to prevent the sheared tissue from sliding out of the opening of the accommodation space;

[0021] The spring and the pressure strip are used in combination to prevent the accommodation space from opening when the device is separated from the patient's body, causing medical waste in the accommodation space to fall out. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 Schematic diagram of the overall structure of the shearing device in Example 1;

[0024] Figure 2 This is a schematic diagram of the explosion structure of Example 1;

[0025] Figure 3 This is a schematic diagram of the overall structure of the shearing device in Example 2.

[0026] Description of reference numerals:

[0027] 1-first shearing portion; 11-bottom plate; 12-first connecting portion; 13-shearing blade; 2-second shearing portion; 21-top plate; 22-second connecting portion; 23-pressing strip; 3-accommodating space; 4-guide column; 41-key block; 5-sleeve; 51-ring; 52-keyway; 6-spring. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0032] Example 1

[0033] The vascular bypass surgery anastomosis site shearing device described in this embodiment includes a first shearing portion 1 and a second shearing portion 2 arranged opposite to each other, the first shearing portion 1 includes a bottom plate 11, and a shearing blade 13 extends vertically upward from the edge of the bottom plate 11, and the second shearing portion 2 includes a top plate 21, and a shearing blade 13 also extends vertically downward from the edge of the top plate 21. The edges of the bottom plate 11 and the top plate 21 are "D"-shaped, and the shearing blades 13 are respectively placed on the arc-shaped parts of the bottom plate 11 or the top plate 21, so that the two shearing blades 13 are arc-shaped. When the first shearing portion 1 and the second shearing portion 2 are away from each other to the extreme position, A gap can be formed between the two shearing blades 13, and the blood vessel wall can enter the gap; when the first shearing part 1 and the second shearing part 2 move relative to each other, the two shearing blades 13 can interlace to form a shear force, and when the relative movement reaches the extreme position, the blood vessel wall can be cut off under the action of the shear force. At the same time, the top plate 21, the bottom plate 11 and the two shearing blades 13 can surround and form an accommodating space 3, and the cut blood vessel wall is placed in the accommodating space 3, so that the sheared tissue can be separated from the human body synchronously when the shearing device is separated from the human body, thereby avoiding the sheared blood vessel wall tissue falling into the blood vessel or the human body, affecting subsequent surgery or postoperative recovery of the patient.

[0034] The first shearing portion 1 is also provided with a first connecting portion 12, and the second shearing portion 2 is provided with a second connecting portion 22. The first connecting portion 12 and the second connecting portion 22 are respectively placed on the inner side of the arc-shaped shearing blade 13, and the first connecting portion 12 is connected to a guide column 4, and the second connecting portion 22 is connected to a sleeve 5. The sleeve 5 is sleeved on the guide column 4, and a ring 51 is provided at the top of the guide column 4. At least one ring 51 is provided on one side of the sleeve 5. During operation, the medical staff's fingers can pass through the ring 51 to control the relative movement of the sleeve 5 and the guide column 4, so that the two shearing portions can extend into the patient's surgical incision to shear vascular tissue. In the present embodiment, the first connecting portion 12 is a stud extending vertically upward from the bottom plate 11, and a screw hole is provided at the bottom end of the guide rod, and the connection between the guide rod and the first connecting portion 12 is completed by the stud and the screw hole; the second connecting portion 22 is a screw tube extending vertically upward from the top plate 21, and the screw tube is connected to a through hole on the top plate 21, and is provided with an internal thread, and the bottom end of the sleeve 5 is provided with an external thread, so that the sleeve 5 is connected to the second shearing portion 2. In other embodiments, the guide rod and the sleeve 5 can also be connected to the first shearing portion 1 and the second shearing portion 2 by means of structures or methods such as snap-fit ​​and plug-in. Those skilled in the art should also know that medical personnel can select a shearing portion of appropriate size according to the diameter of the blood vessels at the surgical site and the size of the blood vessel connection port to be removed.

[0035] A pressure strip 23 is also fixed on the top plate 21, and the pressure strip 23 faces the bottom plate 11. When the first shearing part 1 and the second shearing part 2 complete the shearing action, the pressure strip 23 can be pressed tightly against the bottom plate 11. In this embodiment, the pressure strip 23 is a sponge fixed to the top plate 21 by bonding or inlaying, or it can be a flexible material such as rubber fixed to the top plate 21 by bonding or inlaying. After the shearing is completed, the cut tissue is placed in the accommodating space 3, and the tissue is fixed in the accommodating space 3 by the pressure strip 23 to prevent the cut tissue from falling during the movement, thereby avoiding affecting the progress of the operation and the patient's postoperative recovery. A gap is left between the first connecting part 12 and the second connecting part 22 and the shearing blade 13.

[0036] A spring 6 is also sleeved on the guide rod, one end of the spring 6 rests on the ring sleeve of the guide rod, and the other end rests on the end surface, and the spring 6 is compressed in a natural state, so that the first shearing part 1 and the second shearing part 2 are in an extreme state of close proximity to each other when not subject to external force, and the pressure strip 23 can be pressed on the bottom plate 11, so that after the shearing is completed, the sheared tissue is compressed to prevent the sheared tissue from falling off during the withdrawal of the device from the body.

[0037] The guide rod is also provided with a key block 41, which can be fixed on the guide rod by inlaying or plugging. For the convenience of assembly during production, the key block 41 can be inserted into the groove body opened on the guide rod after the spring 6 is sleeved on the guide rod. A key groove 52 is opened inside the sleeve 5, and the key block 41 is placed in the key groove 52 and can slide along the key groove 52.

[0038] During use, the medical staff first uses a scalpel to cut an opening along the length of the blood vessel at the proximal and distal ends, and the length of the opening is less than the length required for the anastomosis of the blood vessel. Then, the medical staff's fingers pass through the compression spring 6 of the guide rod and the sleeve 5 respectively, so that the first shearing part 1 and the second shearing part 2 are separated from each other, and the first shearing part 1 is extended into the blood vessel along the opening of the blood vessel, and the guide rod is placed at one end of the opening. Then, the pressure on the spring 6 is reduced, and the elastic force of the spring 6 is used to push the two shearing parts to reset, so that the first shearing part 1 and the second shearing part 2 complete the first shearing, so that one end of the blood vessel opening forms an arc-shaped incision, and then the spring 6 is compressed again, so that the first shearing part 1 and the second shearing part 2 are separated, and then the two shearing parts are turned around, so that the guide rod is close to the other end of the opening, and the spring 6 is relaxed again, so that the second shearing is completed on the blood vessel, and the two arc-shaped incisions form a shape similar to an ellipse, so that the shaping of the anastomosis on the blood vessel is completed after the two shearings, thereby shortening the operation time. If needed, the second shearing process can also be operated by another shearing device. At the same time, after the second shearing, one end of the sheared tissue is pressed into the accommodating space 3 by the pressure strip 23 and is taken out of the human body together with the device.

[0039] Example 2

[0040] The vascular bypass surgery anastomosis shearing device described in this embodiment differs from that in embodiment 1 in that the shearing blades 13 of the first shearing portion 1 and the second shearing portion 2 are each elliptical, and the two shearing blades 13 can intersect to form a shearing force. Specifically, the top plate 21 of the second shearing portion 2 is positioned inside the projection of the bottom plate 11 of the first shearing portion 1, and the shearing blade 13 of the second shearing portion 2 is positioned within the shearing blade 13 of the first shearing portion 1. This allows for a single shearing operation to complete the shearing of the anastomosis on the blood vessel after the first shearing portion 1 is inserted into the blood vessel. Furthermore, in this embodiment, the first connecting portion 12 and the second connecting portion 22 are positioned in the middle of the bottom plate 11 and the top plate 21, respectively.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A shearing device for anastomotic sites in vascular bypass surgery, characterized by: The invention comprises two shearing parts arranged opposite to each other, and each shearing part comprises an arc-shaped shearing edge, and the two shearing edges can move along the normal direction of the plane where the arc is located, and when the two shearing edges move relative to each other, they can intersect to form a shearing force; The sleeve and the guide post are sleeved on the guide post, and the ends of the guide post and the sleeve are fixedly connected to the first shearing portion and the second shearing portion respectively.

2. A shearing device for anastomotic sites in vascular bypass surgery, characterized in that: The invention comprises two shearing parts arranged opposite to each other, and each shearing part comprises an elliptical shearing blade, and the two shearing blades can move along the normal direction of the plane in which they are located, and when the two shearing blades move relative to each other, they can interlace to form a shearing force; The sleeve and the guide post are sleeved on the guide post, and the ends of the guide post and the sleeve are fixedly connected to the first shearing portion and the second shearing portion respectively.

3. A vascular bypass surgery anastomotic site shearing device according to claim 1 or 2, characterized in that: The first shearing portion and the second shearing portion respectively extend inwardly to form connecting portions, and the sleeve and the guide column are respectively connected to the connecting portions of the first shearing portion and the second shearing portion.

4. The anastomotic site shearing device for vascular bypass surgery according to claim 3, characterized in that: A through hole is formed on the connecting portion of the second shearing portion, and the guide post can pass through and be fixedly connected to the first shearing portion.

5. The anastomotic site shearing device for vascular bypass surgery according to claim 1, characterized in that: A bottom plate and a top plate are respectively provided on the side of the first shearing portion and the second shearing portion away from the shearing edge, and the top plate, the bottom plate and the shearing edge surround to form an accommodating space.

6. The anastomotic site shearing device for vascular bypass surgery according to claim 5, characterized in that: The top plate is further provided with a pressure strip, and when the first shearing portion and the second shearing portion move relatively to an extreme position, the pressure strip can be tightly pressed against the bottom plate.

7. The anastomotic site shearing device for vascular bypass surgery according to claim 1, characterized in that: A collar is provided at one end of the guide post away from the first shearing portion. A spring is sleeved on the guide post, with one end of the spring resting on the collar and the other end resting on the end surface of the sleeve.

8. The anastomotic site shearing device for vascular bypass surgery according to claim 7, characterized in that: A collar is fixedly provided on the side of the sleeve.

9. The anastomotic site shearing device for vascular bypass surgery according to claim 1, characterized in that: The guide rod is provided with a key block, the sleeve is provided with a key slot, the key block is placed in the key slot and can slide along the length direction of the key slot.

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