Disposable capillary dilation end-to-end anastomat

Abstract

The invention provides a disposable capillary dilation end-to-end anastomat. The disposable capillary dilation end-to-end anastomat comprises a limiting sliding rod; the two sliding seats are arranged along the limiting sliding rod in a sliding manner; the two sets of grabbing and expanding assemblies are symmetrically arranged on the sliding seat, each set of grabbing and expanding assembly comprises a connecting rod A and a connecting rod B which are arranged in the sliding seat in a penetrating mode, the same end of the connecting rod A and the same end of the connecting rod B are provided with a grabbing and expanding end A and a grabbing and expanding end B respectively, and the connecting rod A and the connecting rod B are perpendicular to the length direction of the limiting sliding rod; the driving assembly is used for driving the connecting rod A and the connecting rod B to move so that the grabbing expansion end A and the grabbing expansion end B can get close to or get away from each other. The problem that in the microvessel and nervous tissue anastomosis process, the continuous actions of capturing, aligning, expanding, approaching and rotation preventing of the stump are difficult is effectively solved, the blood vessel stump is more stable and more convenient to capture, the stump is more uniform in stress, the blood vessel stump is expanded to be in a horn shape, the suturing efficiency is effectively improved, the suturing difficulty is reduced, and the suturing time is shortened.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a disposable microvascular dilator end-to-end anastomosis device. Background Technology

[0002] Vascular anastomosis is a common procedure in microsurgery; however, there are not many surgeons nationwide who are proficient in microscopic vascular anastomosis. Patients with severe traumatic limb injuries, ruptured blood vessels, or severed blood vessels and nerves due to limb amputation often require vascular or nerve anastomosis during surgery. In these surgeries, time is a crucial factor for the survival rate of replanted limbs after amputation. Completing the main surgery within 4 hours of injury and restoring arterial and venous blood supply yields the best survival rate for the severed limb. Time is a vital factor for survival; depending on the extent of the injury, the shorter the time required for recanalization, the higher the survival rate.

[0003] Currently, surgical microscopes are indispensable in traditional microsurgery, especially in microvascular anastomosis. However, the cost of purchasing such medical equipment is very high for general hospitals, and its utilization rate is low. Field hospitals, due to environmental constraints, need medical equipment that is both portable and reliable, but these high-precision devices are particularly inconvenient to move and transport. Moreover, the anastomosis technique is extremely demanding on the surgeon during the operation. The continuous actions of capturing, aligning, expanding, approaching, and preventing rotation of the stumps during the anastomosis of microvessels and nerve tissues are quite difficult, especially the anastomosis of stumps of tiny blood vessels and nerve tissues with a diameter of 1-2 mm, which is a major challenge for doctors in less developed areas.

[0004] In summary, there is an urgent need to design a disposable microvascular dilation end-to-end anastomosis device that overcomes the above-mentioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a disposable microvascular dilation end-to-end anastomosis device that overcomes the above-mentioned problems.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a disposable microvascular dilation end-to-end anastomosis device, comprising:

[0007] Limiting slide bar;

[0008] There are two sliding seats, both of which are slidably arranged along the length direction of the limiting slide rod;

[0009] The gripping expansion assembly includes two sets arranged symmetrically to each other, and the two sets are respectively mounted on the sliding seat. Each set of gripping expansion assemblies includes a connecting rod B and a connecting rod A that pass through the sliding seat and are spaced apart vertically. The same end of the connecting rod B and the connecting rod A are respectively provided with a gripping expansion end B and a gripping expansion end A that are symmetrical vertically. The length direction of the connecting rod A and the connecting rod B is perpendicular to the length direction of the limiting slide rod.

[0010] A drive assembly, disposed on the sliding seat, is used to cause the gripping expansion ends A and B to move closer or further apart by driving the movement of the connecting rods A and B.

[0011] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.

[0012] Furthermore, a cavity is provided inside the sliding seat, through which connecting rod A and connecting rod B pass and can rotate on the sliding seat;

[0013] The drive assembly includes gears A and B, which are respectively fixedly sleeved on connecting rod A and connecting rod B within the cavity, and gears A and B are meshed together.

[0014] Furthermore, both connecting rod A and connecting rod B are circular rods with a circular cross-section, and circular holes matching the shape of connecting rod A and connecting rod B are respectively opened on the front and rear side walls of the cavity.

[0015] Furthermore, a hand-held bending part is integrally connected to one end of the link A away from the gripping expansion end A or the other end of the link B away from the gripping expansion end B.

[0016] Furthermore, the limiting slide rod has long grooves on both sides, and the sliding seat has sliding holes at the lower ends of both sides for the limiting slide rod to pass through. The sliding holes have protrusions on both sides that match the long grooves.

[0017] Furthermore, both the gripping expansion end A and the gripping expansion end B include an eyelash needle base and an eyelash needle. The eyelash needles on the connecting rod A and the eyelash needles on the connecting rod B are respectively located on the opposite sidewalls of the two eyelash needle bases, and a plurality of eyelash needles are evenly arranged along the length direction of the eyelash needle base.

[0018] Furthermore, the eyelash needle includes a straight connecting part connected to the base of the eyelash needle and a "V" shaped part integrally connected to the straight connecting part.

[0019] Furthermore, the eyelash needles on the two connecting rods A and the two connecting rods B are respectively arranged symmetrically to each other.

[0020] Furthermore, the eyelash needle base is detachably connected to the connecting rod A and the connecting rod B.

[0021] Furthermore, the base of the eyelash needle is cylindrical, and a threaded hole is provided at one end near the connecting rod A and the connecting rod B. A cylindrical boss is provided at the end of the connecting rod A and the connecting rod B, and the outer wall of the cylindrical boss is provided with an external thread that matches the threaded hole.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The disposable microvascular dilatation end-to-end anastomosis device of the present invention comprises a limiting slide bar, a sliding seat on the limiting slide bar, and a grasping and dilatation assembly consisting of connecting rod A, connecting rod B, grasping dilatation end A, and grasping dilatation end B, as well as a driving assembly. Each grasping and dilatation assembly can capture, align, dilate, and bring closer the stump of a blood vessel or nerve, replacing vascular forceps grasping, and the grasping stability is better than manual grasping. In the present invention, the anastomosis device grasps the stump when it is relaxed, and the stump alignment is the physiological position, which can effectively prevent the rotation of the stump during manual alignment. After the suture point is sutured and returned to the relaxed state, there is no rotation of the suture point, no luminal stenosis occurs, and the vascular patency rate is improved. The design of the device is that after the stump is captured, aligned, and dilated, the two sliding seats slide and bring closer on the limiting slide bar, the force on the stump is more uniform, and the single-point pulling of the suture is improved.

[0024] 2. The disposable microvascular dilator end-to-end anastomosis device of the present invention is equipped with an eyelash needle, which includes a straight connecting part and a "V"-shaped part integrally connected to the straight connecting part. The upper and lower "V"-shaped parts are close to each other to clamp the upper and lower surfaces of the vascular stump, so that the vascular stump expands into a trumpet shape. During suturing, the suturing needle will not pierce the other side of the vessel wall of the same end, but directly sutures the edges of the two ends of the stump in sequence, reducing the difficulty of suturing, shortening the suturing time, effectively improving the suturing effect, and also improving the suturing efficiency.

[0025] 3. The disposable microvascular dilatation end-to-end anastomosis device of the present invention detachably connects the eyelash needle base to the connecting rod A and the connecting rod B. After one operation, the grasping dilatation end A and the grasping dilatation end B can be replaced. The remaining parts can be reused after cleaning and disinfection, which effectively saves resources and reduces the medical costs for patients.

[0026] 4. The disposable microvascular dilation end-to-end anastomosis device of the present invention has relatively simple requirements for surgical equipment during operation. It can be operated under a normal anti-glare 4x scope, which expands the scope of application of this device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the disposable microvascular dilation end-to-end anastomosis device provided by the present invention;

[0028] Figure 2 This is a schematic cross-sectional view of the sliding seat in the disposable microvascular dilation end-to-end anastomosis device provided by the present invention;

[0029] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0030] Figure 4 This is a front view of the disposable microvascular dilation end-to-end anastomosis device provided by the present invention;

[0031] Figure 5 This is an exploded view of the eyelash needle base and connecting rod A or connecting rod B in an embodiment of the present invention;

[0032] Figure 6 This is a front view of the four sets of eyelash needle bases and eyelash needles in an embodiment of the present invention;

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Limiting slide bar; 11. Long groove;

[0035] 2. Sliding seat; 21. Cavity; 22. Round hole; 23. Sliding hole; 24. Protrusion;

[0036] 3. Grip expansion assembly; 31. Link A; 311. Cylindrical boss; 312. External thread; 32. Link B; 33. Grip expansion end A; 331. Eyelash needle base; 332. Eyelash needle; 3321. Straight connection part; 3322. "V" shaped part; 333. Threaded hole; 34. Grip expansion end B;

[0037] 4. Drive assembly; 41. Gear A; 42. Gear B; 43. Hand-held bending part. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0039] Please see Figures 1 to 6 A disposable microvascular dilation end-to-end anastomosis device, comprising:

[0040] Limiting slide bar 1;

[0041] There are two sliding seats 2, and both of them are slidably arranged along the length direction of the limiting slide rod 1; the two sliding seats 2 can be brought closer or further apart along the limiting slide rod 1, which facilitates bringing the blood vessel stumps captured by the grasping expansion component 3 below closer together;

[0042] The gripping expansion assembly 3 includes two sets arranged symmetrically to each other, and the two sets are respectively mounted on the sliding seat 2. Each set of gripping expansion assembly 3 includes a connecting rod B32 and a connecting rod A31 that pass through the sliding seat 2 and are spaced apart vertically. The same end of the connecting rod B32 and the connecting rod A31 is respectively provided with a gripping expansion end B34 and a gripping expansion end A33 that are symmetrical vertically. The length direction of the connecting rod A31 and the connecting rod B32 is perpendicular to the length direction of the limiting slide rod 1.

[0043] The drive assembly 4 is disposed on the sliding seat 2 and is used to cause the grasping expansion end A33 and the grasping expansion end B34 to move closer or further apart by driving the movement of the connecting rod A31 and the connecting rod B32, so that the grasping expansion end A33 and the grasping expansion end B34 can grasp and capture the blood vessel stump or release the blood vessel after suturing.

[0044] Preferably, the sliding seat 2 has a cavity 21, and the connecting rod A31 and connecting rod B32 pass through the cavity 21 and can rotate on the sliding seat 2;

[0045] The drive assembly 4 includes gears A41 and B42, which are respectively fixedly sleeved on connecting rods A31 and B32 in the cavity 21, and gears A41 and B42 are meshed with each other.

[0046] In this embodiment, by turning the tail end of the rotating link A31 or the link B32, the meshing of the gear pair can cause the link A31 and the link B32 to rotate in opposite directions, thereby causing the grasping expansion end A33 and the grasping expansion end B34 to move closer or further apart, thereby achieving the grasping or releasing of the vascular remnant.

[0047] Preferably, both connecting rod A31 and connecting rod B32 are circular rods with a circular cross-section. The front and rear side walls of the cavity 21 are respectively provided with circular holes 22 that match the shape of connecting rod A31 and connecting rod B32, which can restrict connecting rod A31 and connecting rod B32 to rotate only along their respective axes. It should be noted that the thickness of gear A41 and gear B42 is equal to or slightly greater than the length of the cavity 21 to prevent connecting rod A31 and connecting rod B32 from sliding back and forth, which would cause misalignment of the gripping expansion end A33 and gripping expansion end B34.

[0048] Preferably, to facilitate handheld operation by the doctor, a hand-held bending part 43 is integrally connected to the end of the connecting rod A31 away from the grasping dilation end A33 or the end of the connecting rod B32 away from the grasping dilation end B34. The outer surface of the hand-held bending part 43 is provided with protective texture to prevent hand slippage. During operation, the doctor only needs to rotate the hand-held bending part 43 by a certain angle to allow the grasping dilation end A33 and the grasping dilation end B34 to grasp or release the vascular stump. For ease of operation, in this invention, the hand-held bending part 43 is located at the tail end of the connecting rod B32 at the upper end, with no obstruction at the upper end, making operation more convenient.

[0049] Preferably, the limiting slide rod 1 has long grooves 11 on both sides, and the sliding seat 2 has sliding holes 23 at the lower ends of both sides for the limiting slide rod 1 to pass through. The sliding holes 23 have protrusions 24 on both sides that match the long grooves 11.

[0050] Preferably, both the grasping expansion end A33 and the grasping expansion end B34 include an eyelash needle base 331 and an eyelash needle 332. The eyelash needles 332 on the connecting rod A31 and the eyelash needles 332 on the connecting rod B32 are respectively disposed on the opposite sidewalls of the two eyelash needle bases 331, and a plurality of eyelash needles 332 are evenly disposed along the length direction of the eyelash needle base 331.

[0051] Preferably, the eyelash needle 332 includes a straight connecting portion 3321 connected to the eyelash needle base 331 and a "V"-shaped portion 3322 integrally connected to the straight connecting portion 3321. The two "V"-shaped portions approach each other to form a "W" shape, which clamps the upper and lower surfaces of the blood vessel stump, allowing the blood vessel stump to expand into a trumpet shape. During suturing, the suture needle will not pierce the other side of the vessel wall at the same end, but will directly suture the edges of the two ends sequentially, effectively improving the suturing effect and efficiency.

[0052] Preferably, the eyelash needles 332 on the two connecting rods A31 and the eyelash needles 332 on the two connecting rods B32 are respectively symmetrically arranged.

[0053] Preferably, the eyelash needle base 331 is detachably connected to the connecting rod A31 and the connecting rod B32.

[0054] Preferably, the eyelash needle base 331 is cylindrical, and a threaded hole 333 is provided at one end near the connecting rod A31 and connecting rod B32. A cylindrical boss 311 is provided at the end of the connecting rod A31 and connecting rod B32, and the outer wall of the cylindrical boss 311 is provided with an external thread 312 that matches the threaded hole 333. In this embodiment, new grasping expansion ends A and B can be replaced after each surgery, and the remaining components can be reused after cleaning and disinfection, effectively saving resources and reducing medical costs for patients.

[0055] The working principle of this invention is as follows: The doctor holds two sliding seats 2 with both hands and adjusts the distance between the two sliding seats 2 according to the position of the two blood vessel stumps. Then, the doctor gently flicks the rotating hand bend 43 on one side with his fingers to open the upper and lower rows of eyelash needles. The middle of the upper and lower rows of eyelash needles is then passed through the blood vessel stump on one side. The hand bend 43 is then flicked in the opposite direction to capture the blood vessel stump on one side. The same method is used to capture the blood vessel stump on the other side. At this time, the blood vessel stumps on both sides are in a trumpet shape. Finally, the two sliding seats 2 are brought closer together with the palms until the blood vessel stumps on both sides are pulled to the closest distance. Another doctor can then suture the trumpet-shaped blood vessel stumps on both sides. The suturing speed is fast and the suturing effect is good.

[0056] The present invention has been further described above with reference to the embodiments, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A disposable microvascular dilation end-to-end anastomosis device, characterized in that, It includes: Limiting slide bar (1); There are two sliding seats (2), and both of them are slidably arranged along the length direction of the limiting slide rod (1); The gripping expansion assembly (3) includes two sets arranged symmetrically to each other, and the two sets are respectively provided on the sliding seat (2). Each set of gripping expansion assembly (3) includes a connecting rod B (32) and a connecting rod A (31) that pass through the sliding seat (2) and are arranged vertically and horizontally. The same end of the connecting rod B (32) and the connecting rod A (31) is respectively provided with a gripping expansion end B (34) and a gripping expansion end A (33) that are symmetrically arranged vertically. The length direction of the connecting rod A (31) and the connecting rod B (32) is perpendicular to the length direction of the limiting slide rod (1). A drive assembly (4) is provided on the sliding seat (2) and is used to cause the gripping expansion end A (33) and gripping expansion end B (34) to move closer or further apart by driving the movement of the connecting rod A (31) and the connecting rod B (32).

2. The disposable microvascular dilation end-to-end anastomosis device according to claim 1, characterized in that: The sliding seat (2) has a cavity (21) inside, and the connecting rod A (31) and connecting rod B (32) pass through the cavity (21) and can rotate on the sliding seat (2); The drive assembly (4) includes gear A (41) and gear B (42) respectively fixedly sleeved on connecting rod A (31) and connecting rod B (32) in the cavity (21), and gear A (41) and gear B (42) are meshed with each other.

3. The disposable microvascular dilation end-to-end anastomosis device according to claim 2, characterized in that, Both connecting rod A (31) and connecting rod B (32) are circular rods with a circular cross-section. The front and rear side walls of the cavity (21) are respectively provided with circular holes (22) that match the shape of connecting rod A (31) and connecting rod B (32).

4. The disposable microvascular dilation end-to-end anastomosis device according to any one of claims 1-3, characterized in that, The end of the link A (31) away from the gripping expansion end A (33) or the end of the link B (32) away from the gripping expansion end B (34) is integrally connected to the hand-held bending part (43).

5. The disposable microvascular dilation end-to-end anastomosis device according to claim 4, characterized in that, The limiting slide rod (1) has long grooves (11) on both sides, and the sliding seat (2) has sliding holes (23) at the lower ends of both sides for the limiting slide rod (1) to pass through. The sliding holes (23) have protrusions (24) on both sides that match the long grooves (11).

6. The disposable microvascular dilation end-to-end anastomosis device according to claim 4, characterized in that, Both the grasping expansion end A (33) and the grasping expansion end B (34) include an eyelash needle base (331) and an eyelash needle (332). The eyelash needles (332) on the connecting rod A (31) and the eyelash needles (332) on the connecting rod B (32) are respectively located on the opposite sidewalls of the two eyelash needle bases (331), and multiple eyelash needles (332) are evenly arranged along the length direction of the eyelash needle base (331).

7. The disposable microvascular dilation end-to-end anastomosis device according to claim 6, characterized in that, The eyelash needle (332) includes a straight connecting part (3321) connected to the eyelash needle base (331) and a "V" shaped part (3322) integrally connected to the straight connecting part (3321).

8. The disposable microvascular dilation end-to-end anastomosis device according to claim 7, characterized in that, The eyelash needles (332) on the two connecting rods A (31) and the eyelash needles (332) on the two connecting rods B (32) are respectively symmetrically arranged.

9. The disposable microvascular dilation end-to-end anastomosis device according to claim 8, characterized in that, The eyelash needle base (331) is detachably connected to the connecting rod A (31) and the connecting rod B (32).

10. The disposable microvascular dilation end-to-end anastomosis device according to claim 9, characterized in that, The eyelash needle base (331) is cylindrical, and a threaded hole (333) is provided at one end near the connecting rod A (31) and the connecting rod B (32). A cylindrical boss (311) is provided at the end of the connecting rod A (31) and the connecting rod B (32). The outer wall of the cylindrical boss (311) is provided with an external thread (312) that matches the threaded hole (333).

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