Magnetic type porta hepatis blood flow blocking device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a magnetic type porta hepatis blood flow blocking device which comprises two magnetic strips with opposite magnetism, an operating rod and a sleeve, magnets are fixed in the magnetic strips, the sleeve is sleeved on the operating rod, the two magnetic strips are respectively connected to one end of the operating rod through V-shaped elastic pieces, openings of the V-shaped elastic pieces face outwards, and the operating rod is sleeved on the operating rod. Before the two magnetic attraction strips are attracted, the two magnetic attraction strips and the operating rod are in a Y shape, the sleeve is moved towards the magnetic attraction strips, the two magnetic attraction strips can be closed and attracted, the resilience force of the V-shaped elastic piece is larger than the magnetic attraction force between the two magnetic attraction strips, the sleeve is moved out of the two attracted magnetic attraction strips, and therefore the two magnetic attraction strips can be closed and attracted. And the two attracted magnetic strips can be bounced off and separated under the action of resilience force of the V-shaped elastic sheet. By adopting the integrated structural design, the portable hepatic portal blood blocking device is simple in structure, convenient to operate, good in hepatic portal blood blocking effect, capable of effectively reducing operation time, wide in application scene and convenient to store, disinfect and package.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and in particular to a magnetic hepatic portal blood flow blocking device. Background Art

[0002] In laparoscopic surgery of hepatobiliary surgery, hepatic blood flow occlusion technology is often used to reduce liver bleeding during liver surgery. Among the hepatic blood flow occlusion technologies, the first portal blood flow occlusion has become the preferred method of hepatic blood flow occlusion because the operation is simple and the blood control effect after occlusion is better.

[0003] At present, vascular clamps, vascular forceps, cotton ropes, air bags or water bags are often used clinically to perform the first portal blood flow blocking operation, but these instruments have the problems of complicated operation, difficulty in passing through the small puncture hole of the laparoscope, or poor blocking effect. The patent with announcement number CN209203402U proposes a laparoscopic portal blood flow blocking device, in which one end of the two blocking bands bypasses the portal part and is adsorbed by a magnetic joint, and the hook part of the metal hook passes through the plastic sleeve and hooks the ring on the traction line connected to the blocking band. The blocking band is pulled out from the other end of the plastic sleeve by the traction line to tighten the blocking band to block the portal blood flow. Although the device is small in size and can be applied to most laparoscopic liver surgeries, it also has the problems of many parts, dispersed structure, and cumbersome and complicated operation. The patent with announcement number CN215384361U proposes a magnetic blocking band for laparoscopic portal blood flow blocking, which is a strip-shaped magnetic blocking band, which can block the portal blood flow by forming an enclosure structure through the mutual attraction between magnets. Although the magnetic blocking belt is a strip that can easily pass through the small puncture hole of the laparoscope, it still needs to separate the relevant tissue around the first portal of the liver. After it goes around from the back of the first portal of the liver, the blood flow at the portal of the liver is blocked by adjusting the position of the magnet attraction. The operation is cumbersome and increases the duration of the operation. Utility Model Content

[0004] In view of the technical problems existing in the prior art, the purpose of the utility model is to provide a magnetic portal blood flow blocking device, which adopts an integrated structural design, has a simple structure, is easy to operate, has a good portal blood flow blocking effect, and has a wide range of application scenarios.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A magnetic hepatic portal blood vessel blocking device comprises two magnetic strips with opposite magnetic properties, an operating rod and a sleeve, wherein a magnet is fixed inside the magnetic strip, the sleeve is sleeved on the operating rod, the two magnetic strips are respectively connected to one end of the operating rod through a V-shaped spring piece, the opening of the V-shaped spring piece faces outward, before the two magnetic strips are attracted together, the two magnetic strips and the operating rod are in a Y shape, and the sleeve is moved toward the direction of the magnetic strips to close and attract the two magnetic strips, the rebound force of the V-shaped spring piece is greater than the magnetic attraction between the two magnetic strips, and the sleeve is moved out of the two attracted magnetic strips, and the two attracted magnetic strips can be bounced apart and separated under the action of the rebound force of the V-shaped spring piece.

[0007] Furthermore, a plurality of N-pole magnets are evenly and fixedly arranged in one of the magnetic attraction strips, and a plurality of S-pole magnets are evenly and fixedly arranged in the other magnetic attraction strip.

[0008] Furthermore, the N-pole magnet and the S-pole magnet are spherical, hemispherical or cylindrical.

[0009] Furthermore, one end of the V-shaped spring piece is connected to the inner side of the magnetic attraction strip, and the other end of the V-shaped spring piece is connected to the inside of the operating rod.

[0010] Furthermore, the magnetic strip is made of medical rubber or silicone.

[0011] Furthermore, a handle is provided at the other end of the operating rod.

[0012] Furthermore, semicircular limiting rings are correspondingly arranged on the outer sides of the two magnetic strips.

[0013] Furthermore, the outer wall and the front end of the magnetic strip are both arc-shaped.

[0014] In general, the utility model has the following advantages:

[0015] 1. The magnetic strip, operating rod and sleeve of the utility model are an integrated structure with a simple structure and convenient operation. When in use, it is only necessary to move the sleeve toward the direction of the magnetic strip to close and attract the two magnetic strips to block the blood flow of the portal blood vessels. When the blocking is completed, it is only necessary to move the sleeve out of the two attracted magnetic strips, and the two attracted magnetic strips can be bounced apart under the rebound force of the V-shaped spring piece.

[0016] 2. The utility model is in a slender cylindrical shape in the closed state with a small diameter, and can pass through the small puncture hole of the laparoscope; for the operation of a part of the right lobe of the liver, there is no need to separate the connective tissue on the left side of the first liver portal, the operation is convenient, and the operation time is reduced.

[0017] 3. The utility model has a simple structure, is easy to operate, and has a good effect of blocking the blood flow at the portal vein. It can be used not only in laparoscopic surgery, but also in open surgery and robotic surgery. It can also be used in lobectomy, nephrectomy and other surgeries that require blocking the blood flow of corresponding blood vessels. The application scenarios are very broad.

[0018] 4. The utility model adopts an integrated structural design, which is convenient for storage, disinfection and packaging, and also convenient for surgical nurses to count instruments, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the connection between the magnetic attraction strip and the operating rod of the utility model.

[0021] Figure 3 It is a structural schematic diagram of two magnetic attraction strips of the utility model being closed and attracted.

[0022] Figure 4 It is a schematic diagram of the use state of the utility model.

[0023] Among them, 1 is the magnetic strip, 101 is the magnet, 2 is the operating rod, 201 is the handle, 3 is the sleeve, 4 is the V-shaped spring clip, 5 is the limiting ring, 6 is the liver, and 7 is the first liver portal. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] like Figure 1-4 As shown, a magnetic portal blood flow blocking device comprises two magnetic strips with opposite magnetic properties, an operating rod, and a sleeve. Magnets are fixed in the magnetic strips, and the sleeve is sleeved on the operating rod. The two magnetic strips are respectively connected to one end of the operating rod through V-shaped spring pieces, and the opening of the V-shaped spring pieces faces outward. Before the two magnetic strips are attracted, the two magnetic strips and the operating rod are in a Y shape. Moving the sleeve toward the magnetic strips can close and attract the two magnetic strips. The rebound force of the V-shaped spring piece is greater than the magnetic attraction between the two magnetic strips. When the sleeve is moved out of the two attracted magnetic strips, the two attracted magnetic strips can be bounced apart and separated under the action of the rebound force of the V-shaped spring piece.

[0026] like Figure 1 As shown, a plurality of N-pole magnets are evenly fixedly arranged in one magnetic strip, and a plurality of S-pole magnets are evenly fixedly arranged in another magnetic strip. The N-pole magnets and the S-pole magnets are spherical, hemispherical or cylindrical. In this embodiment, the N-pole magnets and the S-pole magnets are both hemispherical.

[0027] like Figure 2As shown, one end of the V-shaped spring piece is connected to the inner side of the magnetic strip, and the other end of the V-shaped spring piece is connected to the inside of the operating rod. The V-shaped spring piece can not only connect the magnetic strip to the operating rod, but also facilitate the separation of the magnetic strip.

[0028] The magnetic strip is made of medical rubber or silicone. The magnetic strip has a certain degree of softness and elasticity, so that the two magnetic strips can be better attracted to improve the effect of blocking the blood flow of the liver portal.

[0029] like Figure 1 and Figure 3 As shown, a handle is provided at the other end of the operating rod. The handle is provided to facilitate operation and also to limit the sleeve to prevent it from falling off from the rear end of the operating rod. In addition, semicircular limiting rings are provided on the outer sides of the two magnetic strips. The limiting rings can prevent the sleeve from falling off from the front end of the magnetic strips and facilitate the closing and storage of the device.

[0030] like Figure 1 As shown, the outer wall and front end of the magnetic strip are both arc-shaped. The outer wall and front end of the magnetic strip are set to be arc-shaped, which can prevent the magnetic strip from scratching the portal blood vessels or other internal organs, and avoid unnecessary trauma to the human body caused by the device during surgery.

[0031] The working principle of the utility model is as follows:

[0032] like Figure 4 As shown, when the device is used in laparoscopic surgery or robotic surgery in hepatobiliary surgery, a hole is made with a 3-5 mm poking card below the xiphoid process or below the costal arches on both sides (subject to not interfering with the main operation hole), and the portal blood flow blocking device is inserted in a closed state (it can also be entered through a 10-12 mm poking card channel), the front end of the magnetic strip is close to the first portal, and then the sleeve is moved toward the end of the operating rod to move the sleeve out of the two attracted magnetic strips. Since the rebound force of the V-shaped spring sheet is greater than the magnetic attraction between the two magnetic strips, the two attracted magnetic strips can be bounced apart under the rebound force of the V-shaped spring sheet, and then the two magnetic strips are placed on both sides of the first portal blood vessel, and the sleeve is moved toward the direction of the magnetic strip to close the two magnetic strips. Since the magnetism of the two magnetic strips is opposite, the N-pole magnet and the S-pole magnet in the two magnetic strips attract each other, the first portal blood vessel is compressed, and the blood flow of the first portal is blocked.

[0033] When the device is used in open surgery, the device can be directly inserted in an open state, and the two open magnetic strips can be placed on both sides of the first portal blood vessel. The sleeve is moved toward the magnetic strips to close the two magnetic strips and block the blood flow of the first portal blood vessel.

[0034] When the device is used in some surgeries such as the right lobe of the liver, there is no need to separate the connective tissue on the left side of the first portal vein, such as the hepatogastric ligament. The magnetic strip can be directly closed and attracted to block the blood flow to the portal vein, thus reducing the surgical operation time.

[0035] The device can also be used in lobectomy, nephrectomy and other surgeries where blood flow in corresponding blood vessels needs to be blocked.

[0036] In general, the magnetic strip, operating rod and sleeve of the utility model are an integrated structure with a simple structure and convenient operation. When in use, only the sleeve needs to be moved in the direction of the magnetic strip to close and attract the two magnetic strips to block the blood flow of the portal blood vessels. When the blocking is completed, only the sleeve needs to be moved out of the two attracted magnetic strips, and the two attracted magnetic strips can be separated under the action of the rebound force of the V-shaped spring. The utility model is in a slender cylindrical state with a small diameter, which can pass through the small puncture hole of the laparoscope; for the operation of part of the right lobe of the liver, there is no need to separate the connective tissue on the left side of the first portal, which is convenient to operate and reduces the operation time. The utility model has a simple structure, convenient operation, and good effect of blocking the blood flow of the portal blood vessels. It can be applied not only to laparoscopic surgery, but also to open surgery and robotic surgery. It can also be applied to lobectomy surgery, nephrectomy surgery and other situations where the blood flow of the corresponding blood vessels needs to be blocked. The application scenario is very broad. Due to the integrated structural design, the utility model is easy to store, disinfect and package, and it is also convenient for surgical nurses to count the instruments and improve work efficiency.

[0037] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A magnetic hepatic portal blood flow blocking device, characterized in that: The utility model comprises two magnetic strips with opposite magnetic properties, an operating rod and a sleeve. A magnet is fixed in the magnetic strips. The sleeve is mounted on the operating rod. The two magnetic strips are respectively connected to one end of the operating rod through a V-shaped spring piece. The opening of the V-shaped spring piece faces outward. Before the two magnetic strips are attracted together, the two magnetic strips and the operating rod are in a Y shape. Moving the sleeve toward the magnetic strips can close and attract the two magnetic strips. The rebound force of the V-shaped spring piece is greater than the magnetic attraction force between the two magnetic strips. When the sleeve is moved out of the two attracted magnetic strips, the two attracted magnetic strips can bounce apart and separate under the rebound force of the V-shaped spring piece.

2. A magnetic hepatic portal blood flow blocking device according to claim 1, characterized in that: A plurality of N-pole magnets are evenly and fixedly arranged in one of the magnetic attraction strips, and a plurality of S-pole magnets are evenly and fixedly arranged in the other magnetic attraction strip.

3. A magnetic hepatic portal blood flow blocking device according to claim 2, characterized in that: The N-pole magnet and the S-pole magnet are spherical, hemispherical or cylindrical.

4. The magnetic hepatic portal blood flow blocking device according to claim 1, characterized in that: One end of the V-shaped spring piece is connected to the inner side of the magnetic attraction strip, and the other end of the V-shaped spring piece is connected to the inside of the operating rod.

5. The magnetic hepatic portal blood flow blocking device according to claim 1, characterized in that: The magnetic strip is made of medical rubber or silicone.

6. The magnetic hepatic portal blood flow blocking device according to claim 1, characterized in that: The other end of the operating rod is provided with a handle.

7. The magnetic hepatic portal blood flow blocking device according to claim 1, characterized in that: Semicircular limiting rings are correspondingly arranged on the outer sides of the two magnetic strips.

8. The magnetic hepatic portal blood flow blocking device according to claim 1, characterized in that: The outer wall and the front end of the magnetic strip are both arc-shaped.

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