Double-ring double-reverse fixator for microvessel anastomat

Abstract

The utility model discloses a double-ring double-reverse fixator for a microvascular anastomat, which belongs to the technical field of medical instruments and comprises two fixing rings arranged symmetrically and clamping handles connected with the two fixing rings. The clamping handle comprises a left tweezers handle and a right tweezers handle, one end of the left tweezers handle is connected with one end of the right tweezers handle, the two fixing rings are connected to the other end of the left tweezers handle and the other end of the right tweezers handle respectively and located on the same plane, and an obtuse angle is formed between the upper front end face of the clamping handle in the holding state and the plane where the two fixing rings are located. The double-ring double-reverse fixator can be used for simultaneously positioning two points of a blood vessel on an anastomosis ring hanging needle when the microvessel anastomat is used, so that the situation that other point positions are driven to slip when one point position is independently fixed is prevented, the probability of point position slip is greatly reduced, and the fixing efficiency and the convenience of surgical operation are improved.

Description

Technical Field

[0001] This utility model relates to a medical fixator, specifically a double-ring double-reverse fixator for microvascular anastomosis. Background Technology

[0002] Microvascular anastomosis devices are surgical instruments widely used for connecting and anastomosing tissues such as the gastrointestinal tract and blood vessels. They help surgeons quickly and accurately connect tissues during surgery, improving surgical efficiency and safety. The microvascular anastomosis device has two anastomosis rings, each with an everted hanging pin on its end face for fixing the blood vessel. During operation, the two blood vessels to be anastomosed are passed through their respective anastomosis rings and everted onto the hanging pins before the anastomosis is performed. This procedure typically requires the simultaneous cooperation of three medical personnel. One or two personnel use forceps to grasp the blood vessel, pass it through the anastomosis ring, and evert the opening of the vessel to hook it onto the hanging pin. Another personnel use fixing forceps to press down on the everted portion of the vessel, causing the hanging pin to penetrate and fix it in place.

[0003] The anastomosis ring typically has 6-8 pins, corresponding to 6-8 fixation points, which need to be secured one by one using forceps. Traditional fixation forceps are semi-ring designs, which are combined into a single ring during use, allowing the pins to pass through the center of the ring for fixation. This only allows for the fixation of one point at a time. During the surgical procedure, other pins that have been attached but not yet secured may slip off, resulting in repetitive or even ineffective work, greatly affecting the convenience of operation and surgical efficiency.

[0004] There are also some surgical forceps in the existing technology, such as the Chinese utility model patent CN107647902A entitled "A Novel General Surgery Forceps", and the Chinese utility model patent CN213372951U entitled "A Meibomian Gland Cyst Forceps", etc. However, their structure and force application method determine that they are more suitable for clamping and cannot be used for fixation when using microvascular anastomosis devices. Utility Model Content

[0005] This invention aims to solve the problem that traditional forceps tools in the prior art are not suitable for fixing microvascular anastomosis devices or are inconvenient to fix. It proposes a double-ring double-counter-fixator for microvascular anastomosis devices. The fixator adopts a double-ring design, which can fix two points at the same time, avoid slippage, and effectively improve the convenience and efficiency of surgical operation.

[0006] To achieve the above-mentioned objectives, the technical solution of this utility model is as follows:

[0007] A double-ring double-reverse fixator for microvascular anastomosis includes two symmetrically arranged fixation rings and a clamp connected to the two fixation rings; the clamp includes a left forceps handle and a right forceps handle connected to each other at one end, and the two fixation rings are respectively connected to the other end of the left forceps handle and the right forceps handle. The two fixation rings are on the same plane, and the upper front face of the clamp in the gripping state forms an obtuse angle with the plane where the two fixation rings are located.

[0008] Furthermore, the two retaining rings are located on the front side when the grip handle is in the gripping state, and a transition connecting section is provided between the two retaining rings and the tweezer handles to which they are connected.

[0009] Furthermore, the two retaining rings are respectively tangent to the outer side of the two transition connecting sections relative to the inner opening of the clamp handle, so that the two retaining rings extend beyond the gripping surface of the tweezer handle to which they are connected.

[0010] Furthermore, the clamp handle is a one-piece molded structure, and the material of the clamp handle is stainless steel or titanium alloy.

[0011] Furthermore, both the left and right tweezer handles are flat strips, and anti-slip textures are provided on the gripping surfaces of both the left and right tweezer handles.

[0012] Furthermore, both fixing rings are closed rings with an outer major diameter of 0.7 mm, an inner major diameter of 0.4 mm, an outer transverse diameter of 0.6 mm, and an inner transverse diameter of 0.4 mm.

[0013] Furthermore, the transition connection section has a diameter of 0.3 mm and a length of 2 mm.

[0014] Furthermore, the length of the clamp head at the connection between the left and right tweezer handles is 1-2 cm, the length from the handle head to the handle end of the left and right tweezer handles is 8-12 cm, and the width of the left and right tweezer handles is 1.5-2 cm.

[0015] Furthermore, the plane containing the two fixing rings forms an angle of 90° to 120° with the upper front face of the grip handle when held, and the plane containing the two fixing rings forms an angle of 92° to 94° with the grip surface of the corresponding tweezer handle.

[0016] The operation process of this utility model is as follows:

[0017] One or two medical staff members use forceps to grasp the blood vessel and pass it through the anastomosis ring. They then evert the opening of the vessel to attach it to the hanging needle. Next, another medical staff member holds the handle of the fixator, adjusts the spacing between the two fixing rings, and places it over the two points where the everted blood vessel is attached. The fixator is then pressed down on the vessel along the axis of the hanging needle, allowing the hanging needle to penetrate and secure it. Because this fixator can simultaneously fix two points, it significantly reduces the probability of slippage, improving fixation efficiency and the convenience of the surgical procedure.

[0018] In summary, this utility model has the following advantages:

[0019] 1. The double-ring double-reverse fixator proposed in this utility model can be used to simultaneously locate the blood vessels on the anastomosis ring hanging needle when using the microvascular anastomosis device, thereby preventing the other points from slipping when fixing only one point, greatly reducing the probability of point slippage, improving fixation efficiency and the convenience of surgical operation.

[0020] 2. This utility model, combining the characteristics of the stapler, innovatively proposes a double-fixing ring structure, which has the features of simple structure, convenient operation, and reasonable design;

[0021] 3. In this utility model, the distance between the two fixing rings can be adjusted by holding the clamp handle to accommodate the two hanging pins on the matching ring. The clamp handle adopts an integral molding structure and is made of stainless steel. The distance between the two fixing rings can be adjusted by relying on the elastic deformation of the material itself.

[0022] 4. In this utility model, the left and right tweezer handles are designed as flat strips, and anti-slip textures are provided on the gripping surface of the tweezer handles to improve grip stability;

[0023] 5. In this utility model, the two fixing rings are respectively tangent to the outer side of the opening on the inner side of the clamp handle on the two transition connecting sections, so that the two fixing rings extend beyond the gripping surface of the tweezer handle to which they are connected, which can optimize the operating space and avoid interference with the tweezer handle during use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the fixture of this utility model;

[0025] Figure 2 This is a front view of the fixture of this utility model;

[0026] Figure 3 This is a bottom view of the fixture of this utility model;

[0027] Figure 4 This is a side view of the fixture of this utility model;

[0028] Figure 5 for Figure 1 Enlarged schematic diagram of the middle fixing ring;

[0029] Figure 6 This is a schematic diagram of the fixing ring;

[0030] In the picture:

[0031] 1. Clamp handle; 101. Left tweezer handle; 102. Right tweezer handle; 103. Handle tip; 104. Grip surface; 2. Fixing ring; 3. Transition connecting section. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this utility model, it should be noted that the terms "upper," "vertical," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The following embodiments can be combined with each other without conflict.

[0038] Example 1

[0039] This invention provides a double-ring, double-reverse fixator for microvascular anastomosis devices, such as... Figures 1 to 5As shown, the device includes two symmetrically arranged fixing rings 2 that cooperate with the hanging needles on the anastomosis ring to fix the blood vessel, and a clamp handle 1 connected to the two fixing rings 2. Both fixing rings 2 are closed rings and located on the same plane. The upper front face of the clamp handle 1 in the gripping state forms an obtuse angle with the plane containing the two fixing rings 2. By simultaneously placing the two fixing rings 2 onto the two hanging needles of the anastomosis ring, and applying pressure along the axis of the hanging needles using the clamp handle 1, the everted blood vessel hanging on the hanging needles can penetrate the hanging needles, thus simultaneously fixing two points.

[0040] In this design, the clamp 1 includes a left tweezer handle 101 and a right tweezer handle 102 connected at one end. Two retaining rings 2 are respectively connected to the other ends of the left and right tweezer handles. By gripping the clamp 1, the distance between the two retaining rings 2 can be adjusted to accommodate two hanging pins at different distances on the matching ring. Specifically, the clamp 1 can adopt a commonly designed one-piece molded structure. The clamp 1 is made of stainless steel or titanium alloy, and the distance between the two retaining rings 2 is adjusted by the elastic deformation of the material itself.

[0041] The operation procedure of the fixator of this utility model is as follows:

[0042] One or two medical staff members use forceps to grasp the blood vessel and pass it through the anastomosis ring. They then evert the opening of the vessel to attach it to the hanging needle. Next, another medical staff member holds the clamp handle 1 of the fixator, adjusts the spacing of the two fixing rings 2, and places them on the two points where the everted blood vessel is attached. The fixator is then pressed down on the blood vessel along the axis of the hanging needle, allowing the hanging needle to penetrate and secure the vessel. Because this fixator can simultaneously fix two points, it significantly reduces the probability of slippage, improving fixation efficiency and the convenience of the surgical procedure.

[0043] Example 2

[0044] As a preferred embodiment of this utility model, based on Embodiment 1, the double-ring double-reverse fixator for microvascular anastomosis devices in this embodiment differs from that in the following ways:

[0045] In this embodiment, furthermore, for ease of gripping, the left and right tweezer handles are designed as flat strips, and anti-slip textures can be provided on the gripping surface 104 of the tweezer handles to improve grip stability. Preferably, the length of the left and right tweezer handles from the handle tip 103 to the handle end is 8-12cm, and the width of the tweezer handles is 1.5-2cm.

[0046] Example 3

[0047] As a preferred embodiment of this utility model, based on any of the above embodiments, the double-ring double-reverse fixator for microvascular anastomosis devices in this embodiment differs from the above in the following ways:

[0048] To improve ease of operation, in this embodiment, the two fixing rings 2 are preferably respectively disposed on the front side of the left and right tweezer handles in the gripping state, and the ends of the left and right tweezer handles are provided with transition connecting sections 3 that connect to the fixing rings 2. In this design, the gripping state is the general use state of the clamp 1, and the left and right outer surfaces of the clamp 1 are the gripping surfaces 104.

[0049] Preferably, the plane containing the two fixing rings 2 forms an angle of 90° to 120° with the upper surface of the handle 1 when it is held.

[0050] Preferably, for ease of operation, in this embodiment, the outer diameter of the handles of the left and right tweezers that connect to the transition connecting section 3 should be as small as possible while maintaining strength.

[0051] Example 4

[0052] As a preferred embodiment of this utility model, based on any of the above embodiments, the double-ring double-reverse fixator for microvascular anastomosis devices in this embodiment differs from the above in the following ways:

[0053] In this embodiment, considering the structural characteristics of the annular needle position of the anastomosis ring, and to further optimize the operating space, the two fixing rings 2 are respectively tangent to the outer side of the transition connecting section 3 opposite to the inner opening of the clamp handle 1, so that the fixing rings 2 extend beyond the plane of the forceps handle gripping surface 104, thereby avoiding interference with the forceps handle during use. Figure 1 and Figure 5 As shown.

[0054] Preferably, the plane containing the two fixing rings 2 forms an angle of 92° to 94° with the gripping surface 104 of the corresponding tweezer handle.

[0055] Example 5

[0056] As the preferred embodiment of this utility model, this embodiment provides a double-ring double-reverse fixator for microvascular anastomosis devices, such as... Figures 1 to 6 As shown, it includes two symmetrically arranged fixing rings 2 and a clamp handle 1 connected to the two fixing rings 2; the clamp handle 1 includes a left tweezer handle 101 and a right tweezer handle 102 connected to each other at one end, and the two fixing rings 2 are respectively connected to the other end of the left tweezer handle 101 and the right tweezer handle 102. The two fixing rings 2 are on the same plane and the plane is at an obtuse angle to the clamp handle 1 as a whole.

[0057] In this embodiment, the two fixing rings 2 are preferably located on the front side of the clamp handle 1 when it is held, and the ends of the left and right tweezer handles are provided with transition connecting sections 3 that are connected to the fixing rings 2.

[0058] Specifically, in this embodiment, the two fixing rings 2 are respectively tangent to the outer side of the two transition connecting sections 3 relative to the inner opening of the clamp handle 1, so that the two fixing rings 2 extend beyond the gripping surface 104 of the tweezer handle to which they are connected.

[0059] In this embodiment, the left and right tweezer handles are designed as flat strips, and the gripping surface 104 of the tweezer handles is provided with anti-slip textures to improve grip stability (not shown in the figure). The clamp handle 1 adopts a one-piece molded structure and is made of stainless steel. The spacing between the two fixing rings 2 is adjusted by the elastic deformation of the material itself.

[0060] In this embodiment, the following set of design parameters can be referenced for the fixation device:

[0061] The length of the clamp 1 at the connection between the left tweezer handle 101 and the right tweezer handle 102 is 1.5cm, and the included angle γ between the left tweezer handle 101 and the right tweezer handle 102 is 6°. The length from the handle tip 103 to the handle end of the left tweezer handle 101 and the right tweezer handle 102 is 10cm, and the handle width is 1.8cm.

[0062] The transition section 3 has a diameter of 0.3 mm and a length of 2 mm.

[0063] The plane containing the fixing ring 2 forms an angle α of 93° with the upper end face of the tweezer handle and an angle β of 110° with the gripping surface 104 of the tweezer handle.

[0064] Both fixed rings 2 are closed rings, such as Figure 4 As shown, the outer major diameter a1 of the fixing ring 2 is 0.7 mm, the inner major diameter a2 is 0.4 mm; its outer transverse diameter b1 is 0.6 mm, and its inner transverse diameter b2 is 0.4 mm.

[0065] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A double ring double reverse fixator for a microvascular anastomat, characterized by, It includes two symmetrically arranged fixing rings (2) and a clamp (1) connected to the two fixing rings (2); the clamp (1) includes a left tweezer handle (101) and a right tweezer handle (102) connected to each other at one end, and the two fixing rings (2) are respectively connected to the other end of the left tweezer handle (101) and the right tweezer handle (102). The two fixing rings (2) are on the same plane, and the upper front end face of the clamp (1) in the gripping state forms an obtuse angle with the plane where the two fixing rings (2) are located.

2. The double ring double reverse fixator for microvascular anastomat according to claim 1, wherein Two retaining rings (2) are located on the front side of the grip handle (1) in the holding state, and a transition connecting section (3) is provided between the two retaining rings (2) and the tweezer handles they are connected to.

3. The double ring double reverse fixator for microvascular anastomosis apparatus as claimed in claim 2, wherein, Two retaining rings (2) are respectively tangent to the outside of the inner opening of the two transition connecting sections (3) relative to the handle (1), so that the two retaining rings (2) extend beyond the gripping surface (104) of the tweezer handle to which they are connected.

4. The double-loop double-reverse fixator for a microvascular anastomat according to any one of claims 1 to 3, characterized in that, The clamp (1) is an integrally formed structure, and the material of the clamp (1) is stainless steel or titanium alloy.

5. The double loop double reverse fixator for microvascular anastomosis apparatus as claimed in any one of claims 1 to 3, wherein The left tweezer handle (101) and the right tweezer handle (102) are both flat strips, and the gripping surfaces (104) of the left tweezer handle (101) and the right tweezer handle (102) are provided with anti-slip textures.

6. The double ring double reverse fixator for microvascular anastomosis apparatus of claim 1, wherein, Both fixed rings (2) are closed rings with an outer length diameter of 0.7 mm, an inner length diameter of 0.4 mm, an outer transverse diameter of 0.6 mm, and an inner transverse diameter of 0.4 mm.

7. The double loop double reverse fixator for microvascular anastomosis apparatus of claim 2 or 3, wherein, The transition connection section (3) has a diameter of 0.3 mm and a length of 2 mm.

8. The double ring double reverse fixator for microvascular anastomosis apparatus of claim 5, wherein, The clamp head (103) at the connection between the left tweezer handle (101) and the right tweezer handle (102) is 1-2cm long. The length of the left tweezer handle (101) and the right tweezer handle (102) from the handle head (103) to the handle end is 8-12cm. The width of the left tweezer handle (101) and the right tweezer handle (102) is 1.5-2cm.

9. The double loop double reverse fixator for microvascular anastomosis apparatus as claimed in any one of claims 1 to 3, wherein The plane containing the two fixing rings (2) forms an angle of 90° to 120° with the upper front face of the clamp handle (1) in the gripping state, and the plane containing the two fixing rings (2) forms an angle of 92° to 94° with the gripping surface (104) of the corresponding tweezer handle.

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