Blood vessel compression device

Abstract

The utility model provides a blood vessel compression device which comprises a column body, a protruding strip and a puncture line, the protruding strip is arranged on the side wall of the column body, a groove is formed in the side wall of the column body, the protruding strip is opposite to the groove in position, one end of the puncture line is movably connected into the column body, the other end of the puncture line penetrates out of the column body and is connected with a puncture needle, and the column body is provided with a line pulling mechanism. A fixing area is arranged at one end of the cylinder away from the puncture line. The movable puncture line is arranged, the fixing area is arranged on the column body of the device, the puncture line can be fixed after puncture is completed below the blood vessel, the puncture line is tensioned and fixed through the line pulling mechanism, the accuracy and stability of the pressing position are guaranteed, the blood vessel is pressed through the protruding strips, and only the column body needs to be rotated when the myocardial blood vessel of a rat is blocked and recovered. The groove corresponds to the position of a blood vessel, so that a muscle and blood vessel recovery space can be formed, the blood vessel is recovered, repeated blocking and recovering are completed by rotating the column body, operation is easy, repeated puncture and repeated fixation are not needed, and damage to myocardium and the blood vessel is greatly relieved.

Description

Technical Field

[0001] This utility model relates to experimental apparatus for studying animal models, and in particular to a blood vessel compression device. Background Technology

[0002] Laboratory animal science is a discipline that uses laboratory animals as research subjects and conducts animal experiments. This discipline is of great significance for the study of human diseases, and animal models constructed for the purpose of studying human diseases are usually called human disease animal models.

[0003] The rat myocardial ischemia model is an animal model that simulates human myocardial ischemia. Myocardial ischemia refers to a pathological state in which reduced blood perfusion to the heart leads to decreased oxygen supply and abnormal myocardial energy metabolism. In specific experimental simulations, the rat myocardial ischemia model can be further subdivided into other models under different conditions and steps. Among them, the construction of the rat myocardial ischemia-reperfusion injury model requires simulating the myocardial ischemia-reperfusion state by blocking and recanalizing the left anterior descending coronary artery of the rat heart.

[0004] Existing methods of vascular occlusion are mainly divided into vascular compression and vascular ligation. Vascular ligation is prone to causing myocardial damage at the ligation site, and the repeated process of occlusion and recanalization can damage the permeability of blood vessels. Vascular compression, on the other hand, is prone to incomplete vascular occlusion due to issues with the pressure and location of compression. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a vascular compression device, which aims to solve the problems that the existing vascular compression method is difficult to accurately compress blood vessels, difficult to completely compress and block blood vessels, and can also achieve repeated compression and recanalization.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A vascular compression device includes a column, a raised strip, and a puncture wire. The raised strip is provided on the side wall of the column, and a groove is formed on the side wall of the column. The raised strip and the groove are positioned opposite each other. One end of the puncture wire is movably connected to the column and is located at one end of the column. The other end of the puncture wire passes through the column and is connected to a puncture needle. A wire-pulling mechanism is provided in the column for pulling the puncture wire. A fixing area is provided at the end of the column away from the puncture wire for fixing the puncture needle and the puncture wire.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a movable puncture line and setting the fixing area on the column of the device, the puncture line can be fixed after puncture below the blood vessel and tightened by the pull line mechanism, ensuring the accuracy and stability of the compression position. The convex strip compresses the blood vessel, completing the blockage of the rat's myocardial blood vessels. When recanalizing, it is only necessary to rotate the column and align the groove opposite to the convex strip with the blood vessel position to form a space for muscle and blood vessel recovery, so that the blood vessel can be reopened. Repeated blocking and recanalization can be completed by rotating the column. The operation is simple and does not require repeated punctures and fixation, greatly reducing the damage to the myocardium and blood vessels.

[0009] Furthermore, the column is a cylinder.

[0010] Furthermore, a rotating part is provided on the side wall of the column, and the rotating part is located at one end of the column near the puncture line.

[0011] Furthermore, the distance between the rotating part and the groove is equal to the distance between the rotating part and the protrusion.

[0012] Furthermore, the fixing area includes a first needle groove and a second needle groove. The first needle groove is formed on the side wall of the column, and the second needle groove is formed on the end face of the column away from the puncture line. The first needle groove and the second needle groove are connected.

[0013] Furthermore, on the side of the column where the second needle-threading groove is formed, a first fixing groove and a second fixing groove are formed, with the second needle-threading groove located between the first fixing groove and the second fixing groove.

[0014] Furthermore, the puncture line is located at one end of the cylinder and connected to a rotating shaft. The rotating shaft is movably connected to the inner wall of the cylinder. The pulling mechanism includes a roller, a first gear, and a second gear. The first gear is sleeved on the rotating shaft, and the second gear is connected to the roller. The first gear meshes with the second gear. A portion of the roller passes through the inner wall of the cylinder and is placed outside the cylinder.

[0015] Furthermore, the side of the convex strip facing away from the column is an arc surface. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the vascular compression device in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the vascular compression device for vascular occlusion and recanalization in an embodiment of this utility model;

[0018] Figure 3This is a schematic diagram of the wire pulling mechanism in the vascular compression device of this utility model embodiment;

[0019] Explanation of key component symbols:

[0020] Column 100 convex strip 210 groove 220 puncture line 300 Puncture needle 310 Pull-wire mechanism 320 First gear 321 Second gear 322 roller 323 pivot 330 Rotating part 400 First needle groove 510 Second needle groove 520 First fixing groove 610 Second fixing groove 620 Blood vessel 700

[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please see Figures 1 to 3The vascular compression device in this embodiment of the present invention includes a cylinder 100, a protrusion 210, and a puncture wire 300. The cylinder 100 is cylindrical, and the protrusion 210 is provided on the side wall of the cylinder 100. The side of the protrusion 210 facing away from the cylinder 100 is an arc surface. A groove 220 is formed on the side wall of the cylinder 100, and the protrusion 210 and the groove 220 are positioned opposite each other. One end of the puncture wire 300 is movably connected to the cylinder 100, and the puncture wire 300 is located at one end of the cylinder 100. The other end of the puncture wire 300 passes through the cylinder 100 and is connected to a puncture needle 310. A pull-wire mechanism 320 is provided inside the column 100. The pull-wire mechanism 320 is used to pull the piercing wire 300. One end of the piercing wire 300 located inside the column 100 is connected to a rotating shaft 330. The rotating shaft 330 is movably connected to the inner sidewall of the column 100. The pull-wire mechanism 320 includes a roller 323, a first gear 321, and a second gear 322. The first gear 321 is sleeved on the rotating shaft 330. The second gear 322 is connected to the roller 323. The first gear 321 and the second gear 322 mesh. A portion of the roller 323 passes through the inner sidewall of the column 100 and is located outside the column 100.

[0026] Preferably, one end of the puncture line 300 is connected to the side wall of the rotating shaft 330 and wound around the rotating shaft 330. The second gear 322 is coaxial with the roller 323. A shaft is provided that passes through the second gear 322 and the roller 323. The two ends of the shaft are connected to the inner side wall of the column 100. The shaft is coaxial with the second gear 322. The roller 323 can adjust the rotating shaft 330 to tighten the puncture line 300. When puncturing, the puncture line 300 is pulled out and passes through the muscle through the puncture needle 310, so that the puncture line passes under the blood vessel 700 and exits the muscle. The puncture needle 310 is fixed on the column 100. The puncture line is further tightened by adjusting the roller 323 to fix the compression position and prevent the blood vessel compression device from sliding, which would result in an unsatisfactory compression effect. Understandably, after fixing the vascular compression device, rotating the column 100 causes the protrusion 210 to abut against the compression site, thereby blocking the blood vessel 700. The arc surface of the protrusion 210 facilitates rotation and prevents the sharp edges from damaging the myocardial surface. When recanalization is required, rotating the column 100 aligns the groove 220 with the compression site, providing space for the recovery of the muscle and the blood vessel 700, thus enabling recanalization. Repeated blocking and recanalization can be completed simply by rotating the device, without the need for multiple punctures, greatly improving experimental efficiency and reducing damage to the muscle and the blood vessel 700.

[0027] A fixing area is provided at one end of the column 100 away from the puncture line 300. The fixing area is used to fix the puncture needle 310 and the puncture line 300. The fixing area includes a first needle groove 510 and a second needle groove 520. The first needle groove 510 is formed on the side wall of the column 100. The second needle groove 520 is formed on the end face of the column 100 away from the puncture line 300. The first needle groove 510 and the second needle groove 520 are connected. A first fixing groove 610 and a second fixing groove 620 are formed on the side of the column 100 where the second needle groove 520 is formed. The second needle groove 520 is located between the first fixing groove 610 and the second fixing groove 620. Preferably, the fixing area is located on the side of the column 100 where the groove 220 is formed. When fixing the puncture needle 310, the puncture needle 310 is inserted into the first needle groove 510 and exits from the second needle groove 520. Then, the puncture suture 300 is further pulled to make the length of the puncture suture 300 extending out of the second needle groove 520 longer, with a certain margin to control the placement of one end of the puncture needle 310 connected to the puncture suture 300 into the second fixing groove 620, and the pointed end of the puncture needle 310 away from the puncture suture 300 into the first fixing groove 610. Subsequently, external medical tape is used to further secure the puncture needle 310 to prevent it from coming out. After the puncture needle 310 is fixed, the suture pulling mechanism is adjusted to tighten the puncture suture 300, thereby fixing the device and completing the occlusion of the blood vessel 700. Please refer to [link to relevant documentation]. Figure 2 When the column 100 is rotated to recanalize, the groove 220 rotates toward the muscle, and the fixing area also turns toward the muscle. Specifically, the first needle groove 510 turns toward the muscle, causing the puncture line 300 to relax, further assisting in recanalization.

[0028] A rotating part 400 is provided on the side wall of the column 100. The rotating part 400 is located at one end of the column 100 near the puncture line 300. The distance between the rotating part 400 and the groove 220 is equal to the distance between the rotating part 400 and the protrusion 210. Preferably, the rotating part 400 is an elongated protrusion. The rotating part 400 is used to provide a point of force for rotating the column 100. Specifically, the rotating part 400 can be used to hold the rotating part 400 to accurately rotate the column 100.

[0029] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A vascular compression device, characterized in that, The device includes a column, a raised strip, and a puncture wire. The raised strip is provided on the side wall of the column, and a groove is formed on the side wall of the column. The raised strip and the groove are positioned opposite each other. One end of the puncture wire is movably connected to the column and is located at one end of the column. The other end of the puncture wire passes through the column and is connected to a puncture needle. A wire-pulling mechanism is provided in the column for pulling the puncture wire. A fixing area is provided at the end of the column away from the puncture wire for fixing the puncture needle and the puncture wire.

2. The vascular compression device according to claim 1, characterized in that, The column is a cylinder.

3. The vascular compression device according to claim 1, characterized in that, A rotating part is provided on the side wall of the column, and the rotating part is located at one end of the column near the puncture line.

4. The vascular compression device according to claim 3, characterized in that, The distance between the rotating part and the groove is equal to the distance between the rotating part and the protrusion.

5. The vascular compression device according to claim 1, characterized in that, The fixed area includes a first needle groove and a second needle groove. The first needle groove is opened on the side wall of the column, and the second needle groove is opened on the end face of the column away from the puncture line. The first needle groove and the second needle groove are connected.

6. The vascular compression device according to claim 5, characterized in that, The column has a first fixing groove and a second fixing groove on the side where the second needle groove is formed, and the second needle groove is located between the first fixing groove and the second fixing groove.

7. The vascular compression device according to claim 1, characterized in that, The puncture line is located at one end of the cylinder and connected to a rotating shaft. The rotating shaft is movably connected to the inner wall of the cylinder. The wire pulling mechanism includes a roller, a first gear, and a second gear. The first gear is sleeved on the rotating shaft, and the second gear is connected to the roller. The first gear meshes with the second gear. A portion of the roller passes through the inner wall of the cylinder and is placed outside the cylinder.

8. The vascular compression device according to claim 1, characterized in that, The side of the protrusion facing away from the column is an arc surface.

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