Perforated flap blood vessel positioning device

Abstract

The utility model discloses a branch penetrating flap blood vessel positioning device which comprises a first tube body and a second tube body, the first tube body is connected with the second tube body, the first tube body is perpendicular to the second tube body, horizontal scale marks are arranged on the first tube body, and vertical scale marks are arranged on the second tube body. The first tube body is hollow, one end of the first tube body is provided with an opening, the second tube body is hollow, one end of the second tube body is provided with an opening, the first tube body and the second tube body are used for containing a contrast agent, and the contrast agent is injected into the first tube body and the second tube body. The first tube body or the second tube body can be pasted on the skin surface of a patient, and the tube body can be clearly visible in an image due to existence of a contrast agent in the tube body during CT scanning, so that a clear coordinate system is provided, and the coordinates of the muscle emergence point position of the branch penetrating blood vessel can be more accurately determined through the scale marks on the two tube bodies.

Description

Technical Field

[0001] The utility model relates to the technical field of puncture point blood vessel positioning, in particular to a perforator flap blood vessel positioning device. Background Technique

[0002] Before performing a perforator flap operation, it is necessary to locate the position of the perforator blood vessel exiting the muscle. Through preoperative CT angiography, the image data is transmitted to an imaging workstation (Philips Medical Systems) for image analysis. The surgeon often designs a perforator flap for surgical operation after subjectively judging the image results. However, the positioning of the perforator blood vessel exiting the muscle is often inaccurate, resulting in the failure of flap harvesting. In the prior art, in order to accurately locate the perforator blood vessel exiting the muscle, according to clinical anatomy, two contrast agents are bonded at the regional position of the perforator blood vessel exiting the muscle. Based on the distance and the angle formed by the connection line between the perforator blood vessel exiting the muscle and the imaging positions of the two contrast agents, the body surface position of the perforator blood vessel exiting the muscle is located, and a perforator flap is designed with it as the center.

[0003] The thickness of the subcutaneous fat tissue in the patient's donor area, the natural curvature of the patient's donor area skin, and the distance between the adhered contrast agent and the perforator blood vessel exiting the muscle will all affect the positioning of the perforator blood vessel exiting the muscle. The increase in the thickness of the subcutaneous fat tissue will affect the clarity of the CT angiography image. Thicker subcutaneous fat tissue will absorb and scatter more X-rays, resulting in a decrease in image quality, making it difficult to accurately identify the tiny structure of the perforator blood vessel. This blurring effect will increase the difficulty of positioning the perforator blood vessel exiting the muscle, resulting in a decrease in the accuracy of the marked position. The natural curvature of the skin at the contrast agent part will change the spatial relationship between the blood vessel and the surrounding tissues. In the presence of the natural curvature of the skin, the shape and orientation of tissues such as blood vessels and muscles may become complex in the spatial relationship, making the method of positioning the perforator blood vessel exiting the muscle by simple geometric relationships (such as distance and angle) no longer accurate. Moreover, the thicker the subcutaneous fat tissue, the greater the natural curvature of the skin, and the farther the adhered contrast agent is from the perforator blood vessel exiting the muscle, these spatial relationships may all lead to a large deviation between the marked position and the actual perforator blood vessel exiting the muscle. Content of the Utility Model

[0004] In order to solve the problems existing in the prior art, the utility model provides a perforator flap blood vessel positioning device.

[0005] The technical solution adopted by the utility model is:

[0006] A perforator flap blood vessel positioning device includes a first tube body and a second tube body. The first tube body is connected to the second tube body, the first tube body and the second tube body are perpendicular to each other. Horizontal scale lines are provided on the first tube body, and vertical scale lines are provided on the second tube body;

[0007] The first tube body is hollow, one end of the first tube body is set as an opening, the second tube body is hollow, one end of the second tube body is provided with an opening, and the first tube body and the second tube body are used to accommodate a contrast agent.

[0008] Preferably, the first tube body and the second tube body are flexible tubes.

[0009] Preferably, a sealing assembly is provided at the open end of the first tube body and the open end of the second tube body;

[0010] The sealing assembly includes: a tube plug and a tube plug seat. The tube plug seat is sleeved on the open ends of the first tube body and the second tube body, and the tube plug is threadedly connected to the tube plug seat;

[0011] The tube plug includes a threaded column. The outer side wall of the threaded column is provided with threads. The threaded column is hollow inside. A sealing column is arranged inside the threaded column, and the sealing column is used to block the open ends of the first tube body and the second tube body.

[0012] Preferably, the diameter of the sealing column gradually decreases along its axis in the direction close to the opening of the tube body.

[0013] Preferably, a sealing ring is arranged between the tube plug and the tube plug seat. The sealing ring is provided with a through hole, and the diameter of the through hole is the same as the diameter of the open end of the tube body.

[0014] Preferably, a fixing device is further included. The fixing device is respectively connected to the first tube body and the second tube body;

[0015] The fixing device includes a first rigid hollow tube and a second rigid hollow tube. The first rigid hollow tube is connected to the second rigid hollow tube. The first rigid hollow tube and the second rigid hollow tube are perpendicular to each other. The first tube body passes through the first rigid hollow tube, and the second tube body passes through the second rigid hollow tube. The inner diameter of the first rigid hollow tube is the same as the outer diameter of the first tube body, and the inner diameter of the second rigid hollow tube is the same as the outer diameter of the second tube body.

[0016] Preferably, the first rigid hollow tube and the second rigid hollow tube are made of a transparent material.

[0017] Preferably, the length of the first rigid hollow tube is less than the length of the first tube body, and the length of the second rigid hollow tube is less than the length of the second tube body.

[0018] The beneficial effects of the present utility model are at least one of the following: Before performing a CT scan, a contrast agent is injected into the first tube body and the second tube body. The first tube body or the second tube body is pasted on the patient's skin surface and is in the same scanning plane as the perforator vessel to be located. During the CT scan, the presence of the contrast agent in the tube body makes the tube body clearly visible in the image, thereby providing a clear coordinate system. Through the scale lines on these two tube bodies, the position coordinates of the muscle exit point of the perforator vessel can be more accurately determined. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the first embodiment of the present utility model;

[0020] Figure 2 It is a schematic structural diagram of the second embodiment of the present utility model;

[0021] Figure 3 It is a schematic cross-sectional structural diagram of the tube plug and the sealing seat separated in the second embodiment of the present utility model;

[0022] Figure 4 It is a schematic structural diagram of the third embodiment of the present utility model.

[0023] Reference numerals: 1, first tube body; 2, second tube body; 3, sealing assembly; 31, tube plug; 301, threaded column; 302, sealing column; 32, tube plug seat; 33, sealing ring; 4, fixing device; 41, first rigid hollow tube; 42, second rigid hollow tube. Detailed Embodiments

[0024] To make the purpose, solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the embodiments and the drawings. The illustrative embodiments and descriptions of the present utility model are only used to explain the present utility model and are not intended to limit the present utility model.

[0025] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present utility model. However, it is obvious to those of ordinary skill in the art that: These specific details do not have to be adopted to implement the present utility model. In other embodiments, well-known structures, circuits, materials or methods are not specifically described in order to avoid obscuring the present utility model.

[0026] Throughout the specification, references to "an embodiment", "embodiments", "an example" or "examples" mean that the specific features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the present utility model. Thus, the phrases "an embodiment", "embodiments", "an example" or "examples" appearing throughout the specification do not necessarily all refer to the same embodiment or example. In addition, the specific features, structures, or characteristics may be combined in any suitable combination and / or sub-combination in one or more embodiments or examples. In addition, those of ordinary skill in the art should understand that the drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0027] In the description of the present utility model, the orientation or positional relationship indicated by terms such as "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the protection scope of the present utility model.

[0028] Embodiment 1:

[0029] As Figure 1 shown, a perforator flap blood vessel positioning device includes a first tube body 1 and a second tube body 2, the first tube body 1 is connected to the second tube body 2, and the first tube body 1 and the second tube body 2 are perpendicular to each other. The first tube body 1 and the second tube body 2 can be connected by bonding.

[0030] Horizontal scale lines are provided on the first tube body 1, and vertical scale lines are provided on the second tube body 2; the first tube body 1 is hollow, one end of the first tube body 1 is provided as an opening, the second tube body 2 is hollow, one end of the second tube body 2 is provided with an opening, and the first tube body 1 and the second tube body 2 are used to accommodate contrast agent.

[0031] For reference, taking the first tube body 1 as the X-axis and the second tube body 2 as the Y-axis, the first tube body 1 and the second tube body 2 form a rectangular coordinate system. Contrast agent is injected into the first tube body 1 and the second tube body 2. Before surgery, the positioning device is bonded to the area where the flap is to be harvested, and the positioning device is marked with a marking pen. CT angiography is performed on the area where the flap is to be harvested. The muscle exit point (the position where the blood vessel exits the muscle) of the perforator flap is determined through the CT image, and then through three-dimensional imaging, the coordinate position (X-axis coordinate and Y-axis coordinate) of the muscle exit point in the positioning device is read. According to the X-axis and Y-axis coordinates, the position of the perforator blood vessel is determined in the patient's surgical area.

[0032] Specifically, the device consists of a first tube body (X-axis) and a second tube body (Y-axis), which are connected perpendicularly to each other to form a clear rectangular coordinate system. The first tube body and the second tube body are both hollow and can accommodate contrast agents. By injecting contrast agents into the tube bodies and bonding the positioning device to the area where the flap is to be cut, the doctor can clearly see the position of the positioning device in the CT image. After marking the positioning device with a marker, the doctor can perform CT angiography on the area where the flap is to be cut. Through the CT image, the doctor can accurately determine the muscle exit point of the perforator flap, that is, the location where the perforator blood vessel passes through the muscle. Then, using three-dimensional imaging technology, the doctor can read the coordinate position of the muscle exit point in the positioning device, that is, the X-axis coordinate and the Y-axis coordinate. With these coordinate information, the doctor can accurately determine the actual position of the perforator blood vessel based on the position of the positioning device in the patient's surgical area. This method avoids positioning errors caused by skin thickness or curvature, and improves the accuracy and success rate of the operation.

[0033] Considering that the surface of human skin is not completely flat, but has natural curvature and undulations, if a material with strong rigidity is used, the tube body may not be able to completely fit the skin, resulting in a gap or distortion between the skin and the tube body. In this case, the display of the positioning device in the CT image may deviate from the actual position of the skin surface, thereby affecting the accuracy of perforator vessel positioning. In a possible embodiment, the first tube body 1 and the second tube body 2 are soft tubes that can fit on the skin, thereby reducing the positioning error caused by the curvature of the skin.

[0034] After the contrast agent is injected into the first tube body 1 and the second tube body 2, the openings can be sealed with sealant or tape. The first tube body 1 and the second tube body 2 can be made of medical silicone, and their openings can indeed be sealed by heating. Medical silicone has good thermal stability and plasticity, and heating can soften the silicone material, making it easier to achieve sealing. Ensure that the contrast agent does not leak out of the tube body.

[0035] Embodiment 2:

[0036] In order to improve the sealing performance at the opening of the first tube body 1 and the second tube body 2, in a possible implementation manner, as Figure 2 As shown, the opening end of the first tube body 1 and the opening end of the second tube body 2 are both provided with a sealing assembly 3;

[0037] like Figure 3As shown, the sealing assembly 3 includes a pipe plug 31 and a pipe plug seat 32. The pipe plug seat 32 is sleeved on the open ends of the first pipe body 1 and the second pipe body 2, and the pipe plug 31 is threadedly connected to the pipe plug seat 32. The pipe plug 31 includes a threaded post 301 with external threads provided on its outer sidewall. The threaded post 301 is hollow inside, and a sealing post 302 is arranged inside the threaded post 301. The sealing post 302 is used to block the open ends of the first pipe body 1 and the second pipe body 2. The diameter of the sealing post 302 gradually decreases along its axis towards the direction close to the pipe opening. A sealing ring 33 is arranged between the pipe plug 31 and the pipe plug seat 32. The sealing ring 33 is provided with a through hole, and the diameter of the through hole is the same as the diameter of the pipe opening end. As a special sealing element, the sealing ring 33 usually has good elasticity and corrosion resistance, and can effectively fill the tiny gaps between the pipe plug 31 and the pipe plug seat 32, thereby preventing the contrast agent from leaking from these gaps.

[0038] By setting the combination of the pipe plug seat 32 and the pipe plug 31, a tight closure of the pipe opening can be achieved. The pipe plug seat 32 is sleeved on the open end of the pipe body, and the pipe plug 31 is threadedly connected to the pipe plug seat 32. This connection method is not only simple and reliable, but also convenient for disassembly and replacement, enabling adjustment or replacement of the sealing assembly as needed during use. When the pipe plug 31 is screwed into the pipe plug seat 32, the sealing post 302 will tightly insert into the opening of the pipe body, thereby preventing the contrast agent from leaking from the opening. The diameter of the sealing post 302 gradually decreases along its axis towards the direction close to the pipe opening, but the diameter of the end of the sealing post 302 far from the hose is slightly larger than the opening diameter of the hose. This allows the sealing post 302 to more easily enter and fit the inner wall of the pipe body when screwed into the pipe opening. After the sealing post 302 is fully pushed in, due to this dimensional difference, it will tightly fit on the inner wall of the hose, thus forming an effective sealing barrier to prevent the contrast agent from leaking from the opening.

[0039] Embodiment Three:

[0040] To more conveniently arrange the first pipe body 1 and the first solid 2 in the surgical area of the patient, in a possible implementation manner, as Figure 4 shown, it further includes a fixing device 4. The fixing device 4 is respectively connected to the first pipe body 1 and the second pipe body 2. The fixing device 4 includes a first rigid hollow pipe 41 and a second rigid hollow pipe 42. The first rigid hollow pipe 41 is connected to the second rigid hollow pipe 42, and the connection between the two can be connected by bonding or welding.

[0041] The first rigid hollow tube 41 and the second rigid hollow tube 42 are perpendicular to each other. The first tube body 1 passes through the first rigid hollow tube 41, and the second tube body 2 passes through the second rigid hollow tube 42. The inner diameter of the first rigid hollow tube 41 is the same as the outer diameter of the first tube body 1, and the inner diameter of the second rigid hollow tube 42 is the same as the outer diameter of the second tube body 2. This is to enable the first tube body 1 and the second tube body 2 to maintain perpendicularity to each other as much as possible during use, and reduce the displacement of the tube bodies caused by external factors during the coordinate marking process.

[0042] The first rigid hollow tube 41 and the second rigid hollow tube 42 are made of transparent materials. The transparent materials are used to not block the scale lines. The length of the first rigid hollow tube 41 is less than the length of the first tube body 1, and the length of the second rigid hollow tube 42 is less than the length of the second tube body 2. This can ensure that while the tube bodies are fixed, most areas of the tube bodies can still naturally fit on the skin surface, reducing coordinate errors.

[0043] The above embodiments only represent the specific implementation manners of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A perforator flap blood vessel positioning device, characterized in that It includes a first tube body (1) and a second tube body (2). The first tube body (1) is connected to the second tube body (2), and the first tube body (1) and the second tube body (2) are perpendicular to each other. Horizontal scale lines are provided on the first tube body (1), and vertical scale lines are provided on the second tube body (2). The first tube body (1) is hollow inside, and one end of the first tube body (1) is set as an opening. The second tube body (2) is hollow inside, and one end of the second tube body (2) is provided with an opening. The first tube body (1) and the second tube body (2) are used to accommodate a contrast agent.

2. The perforator flap blood vessel positioning device according to claim 1, characterized in that, The first tube body (1) and the second tube body (2) are flexible tubes.

3. The perforator flap blood vessel positioning device according to claim 2, wherein, Sealing assemblies (3) are provided at the open ends of the first tube body (1) and the second tube body (2). The sealing assembly (3) includes a tube plug (31) and a tube plug seat (32). The tube plug seat (32) is sleeved on the open ends of the first tube body (1) and the second tube body (2), and the tube plug (31) is threadedly connected to the tube plug seat (32). The tube plug (31) includes a threaded column (301). Threads are provided on the outer side wall of the threaded column (301). The threaded column (301) is hollow inside, and a sealing column (302) is provided inside the threaded column (301). The sealing column (302) is used to block the open ends of the first tube body (1) and the second tube body (2).

4. The perforator flap blood vessel positioning device according to claim 3, characterized in that, The diameter of the sealing column (302) gradually decreases along its axis towards the direction close to the opening of the tube body.

5. The perforator flap blood vessel positioning device according to claim 3, characterized in that, A sealing ring (33) is provided between the tube plug (31) and the tube plug seat (32). A through hole is provided on the sealing ring (33), and the diameter of the through hole is the same as the diameter of the open end of the tube body.

6. The angiosome positioning device of a perforator flap according to claim 2, wherein, It further includes a fixing device (4). The fixing device (4) is respectively connected to the first tube body (1) and the second tube body (2). The fixing device (4) includes a first rigid hollow tube (41) and a second rigid hollow tube (42). The first rigid hollow tube (41) is connected to the second rigid hollow tube (42), and the first rigid hollow tube (41) and the second rigid hollow tube (42) are perpendicular to each other. The first tube body (1) passes through the first rigid hollow tube (41), and the second tube body (2) passes through the second rigid hollow tube (42). The inner diameter of the first rigid hollow tube (41) is the same as the outer diameter of the first tube body (1), and the inner diameter of the second rigid hollow tube (42) is the same as the outer diameter of the second tube body (2).

7. The angiosome positioning device of a perforator flap according to claim 6, wherein, The first rigid hollow tube (41) and the second rigid hollow tube (42) are made of a transparent material.

8. The angiosome positioning device of a perforator flap according to claim 6, wherein, The length of the first rigid hollow tube (41) is less than the length of the first tube body (1), and the length of the second rigid hollow tube (42) is less than the length of the second tube body (2).

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