An umbrella-shaped magnetic anchoring traction device for traction exposure in magnetic anchoring laparoscopic surgery

Abstract

The invention discloses an umbrella-shaped magnetic anchoring traction device for traction and exposure in magnetic anchoring laparoscopic surgery, comprising: an umbrella cap, the main body of which is cylindrical, a fixing ring is arranged at the center of the bottom end of the cylinder, and three pairs of rotating shaft bases arranged in a 120° array are arranged at the top edge, each pair of rotating shaft bases is composed of two sheets connected into an L shape, and each sheet is provided with a through hole as an axle ring; an umbrella rib is composed of three completely identical rectangular parallelepiped units, each rectangular parallelepiped unit has a pair of symmetrical shaft cores on both sides of the bottom end, and the two shaft cores of each rectangular parallelepiped unit are inserted into the axle rings of an adjacent pair of rotating shaft bases to form a rotating shaft; a tissue clamp is composed of a tissue clamp main body and a fixing arc, and the fixing arc is connected to the fixing ring by a silk thread; wherein the umbrella cap and the umbrella rib are made of magnetic material, and the tissue clamp is made of anti-magnetic material. The invention can be inserted through a stamp, has a large cross section, a small height, and has a sufficiently large force acting on an external magnet, and can be used to grab and pull tissues to expose the field of view of laparoscopic surgery.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an umbrella-shaped magnetic anchoring traction device used for traction and exposure in magnetic anchoring laparoscopic surgery. Background Art

[0002] With the vigorous development of minimally invasive surgery, traditional laparoscopic technology has become mature and widely popularized, but surgeons have not stopped exploring minimally invasive technology. Based on the high requirements of "reducing punctures, less pain and no scars", some new minimally invasive technologies such as transumbilical single-port laparoscopic surgery and natural cavity endoscopic surgery have also emerged. However, whether it is LESS or NOTES, single-port laparoscopic technology has not achieved the ideal minimally invasive effect. The fundamental reason is that multiple laparoscopic instruments are inserted from the same puncture card: on the one hand, the diameter of the puncture card has to be increased. The diameter of the single-port laparoscopic puncture card is about 30mm, while the diameter of the traditional laparoscopic puncture card is only 5-10mm; on the other hand, the instruments interfere with each other, which is not conducive to the formation of the operating triangle and makes the operation difficult.

[0003] Magnetic surgery technology based on the principle that like poles of magnets repel each other and opposite poles attract each other and the special form of non-contact magnetic force has developed rapidly, and a series of disruptive new clinical technologies have been born. Magnetic anchoring technology is one of the core technologies for the clinical application of magnetic surgery. It uses the magnetic field attraction between magnets or between magnets and paramagnetic materials to enable one magnet to non-contact spatially anchor another magnet or paramagnetic material. The magnet that is the active part of the magnetic anchoring technology is called the anchoring magnet (or external magnet), and the magnet or paramagnetic object that plays a passive attraction role is called the target magnet (or internal magnet). Magnetic anchoring technology is currently mainly used in clinical laparoscopic surgery to reduce the card. Current magnetic anchoring laparoscopic instruments include magnetic anchoring traction instruments, magnetic anchoring cauterization instruments, and magnetic anchoring video instruments. Among them, magnetic anchoring traction instruments have been the most studied and the most mature.

[0004] However, the internal magnet of the traditional magnetic anchoring traction device has the following shortcomings: ① Since the internal magnet needs to be inserted into the abdominal cavity through a puncture card, its size is limited (usually 10 mm in diameter), which leads to insufficient magnetic force between the internal and external magnets. The internal magnet may fall off under the action of a large traction force on the pulled tissue, affecting the smoothness of the surgical operation and even causing medical accidents; ② Due to the limited size of the internal magnet, the cross-section in contact with the abdominal wall is small. When the pulled tissue generates a small traction force, the internal magnet will generate a large pressure on the abdominal wall under the action of the external magnet, thereby damaging the abdominal wall; ③ Due to the limited cross-section of the internal magnet, in order to achieve a large traction force as much as possible, the internal magnet usually needs to meet a certain height, which makes it impossible to effectively pull the tissue in a small space (such as traction of the liver lobe in partial hepatectomy). Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide an umbrella-shaped magnetic anchoring traction device for magnetic anchoring laparoscopic surgery tissue grasping and pulling, and surgical field exposure. The device can assist laparoscopic surgeons in exposing the surgical field. While being able to be smoothly delivered into the abdominal cavity through the punch card, it increases the gravitational force with the external magnet, increases the contact area with the abdominal wall, and reduces the height of the working state, thereby resolving the contradiction between size and magnetic force, and improving the safety, effectiveness and feasibility of magnetic anchoring and punching card-reduced laparoscopic surgery. In addition, the device is made of ferromagnetic material and will not interfere with the normal operation of other devices due to magnetic force during laparoscopic surgery. The present invention is a variable form magnetic anchoring traction device that can be delivered through a punch card, has a large cross-section, a small height, and has a sufficiently large force with an external magnet, and is used to grasp and pull tissues and expose the field of view of laparoscopic surgery, which can effectively resolve the above-mentioned contradiction between size and magnetic force.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] An umbrella-shaped magnetic anchoring traction device for traction exposure in magnetic anchoring laparoscopic surgery, comprising:

[0008] The umbrella cap 1 has a cylindrical main body, a fixing ring 4 is arranged at the center of the bottom end of the cylinder, and three pairs of rotating shaft bases 3.1 arranged in a 120° array are arranged at the top edge, each pair of rotating shaft bases 3.1 is composed of two sheets connected in an L shape, and each sheet is provided with a through hole as a shaft ring;

[0009] The rib 2 is composed of three identical rectangular parallelepiped units, each of which has a pair of symmetrical shaft cores 3.2 on both sides of the bottom end. The two shaft cores 3.2 of each rectangular parallelepiped unit are inserted into the shaft rings of an adjacent pair of shaft bases 3.1 to form a shaft 3;

[0010] The tissue clip 5 is composed of a tissue clip body and a fixing arc 6, and the fixing arc 6 is connected to the fixing ring 4 through a silk thread;

[0011] The umbrella cap 1 and the umbrella ribs 2 are made of magnetic materials, and the tissue clip 5 is made of anti-magnetic material.

[0012] Preferably, the umbrella cap 1 has a diameter of 10 mm, and the thickness has different specifications according to the pulling force requirements, such as 1.5 mm and 10 mm, each pair of rotating shaft bases 3.1 is 2.5 mm high, the diameter of the shaft ring is 1 mm, the outer diameter of the fixing ring 4 is 4 mm, the inner diameter is 2 mm, and the thickness is 1 mm. Each rectangular unit is 40 mm long, 5 mm wide, and 2 mm thick.

[0013] Preferably, the sheet-like body is rectangular, the two sheet-like bodies of each pair of rotating shaft bases 3.1 are vertically connected, and a through hole is opened at the center position of each sheet-like body.

[0014] The fixing arc 6 is an arc-shaped structure on the tissue clip 5, and is used to fasten the silk thread thereon.

[0015] Among them, the bottom end of each of the rectangular units is in contact with the top end of the umbrella cap 1 or there is a small gap to ensure that each rectangular unit is rotated 90° through the rotating shaft 3, thereby realizing the conversion between the inserted state and the working state, wherein the inserted state is a state in which the rectangular unit is perpendicular to the umbrella cap 1, and the working state is a state in which the rectangular unit is parallel to the umbrella cap 1.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The umbrella-shaped magnetic anchoring traction device has two states: the insertion state and the working state. The insertion state has a small cross-section (10mm) and can be smoothly inserted into the abdominal cavity through the puncture card, while the working state has a large cross-section (914mm2) and can provide sufficient traction force for tissue traction exposure, which can be used to grasp and pull larger tissues while reducing the shedding of the traction device;

[0018] 2. The umbrella-shaped magnetic anchoring traction device has a large cross-section in the working state, which reduces the pressure on the abdominal wall and reduces the damage to the abdominal wall;

[0019] 3. The umbrella-shaped magnetic anchoring traction device has a small working height (the minimum height of the internal magnet is 4mm), and can be used for tissue traction exposure in a narrow space;

[0020] 4. The umbrella-shaped magnetic anchoring traction device is made of ferromagnetic material and will not interfere with the normal operation of other devices due to magnetic force during laparoscopic surgery;

[0021] 5. The height of the umbrella cap of the umbrella-shaped magnetic anchoring traction device is adjustable. When the surgical operation space is large enough and a larger traction force is required, the height of the umbrella cap can be increased to increase the magnetic force of the internal and external magnets, thereby increasing the traction force on the tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention (placed state, specification one).

[0023] Figure 2 It is a schematic diagram of the structure of the present invention (placed state, specification two).

[0024] Figure 3 It is a structural schematic diagram of the present invention (working state).

[0025] Figure 4 Schematic diagram of the umbrella cap structure of the present invention.

[0026] Figure 5 It is a schematic diagram of the umbrella rib structure of the present invention.

[0027] Figure 6It is a schematic diagram of the structure of the tissue clip of the present invention. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below with reference to the accompanying drawings and examples.

[0029] like Figure 1 , Figure 2 , Figure 3 As shown, an umbrella-shaped magnetic anchoring traction device for traction exposure in magnetic anchoring laparoscopic surgery comprises:

[0030] Umbrella cap 1, made of ferromagnetic material, reference Figure 4 The main body is 10mm in diameter and has adjustable thickness (different specifications are available according to the requirements of pulling force, such as 1.5mm and 10mm, refer to Figure 1 and Figure 2 ) is a cylinder, and a fixing ring 4 is arranged at the center of the bottom end of the cylinder. The fixing ring 4 is made of ferromagnetic material, and its base is connected to the center of the bottom of the umbrella cap 1, and there is a circular hole in the middle. Its outer diameter is 4mm, the inner diameter is 2mm, and the thickness is 1mm. Three pairs of rotating shaft bases 3.1 arranged in a 120° array are arranged on the top edge of the cylinder. Each pair of rotating shaft bases 3.1 is 2.5mm high and consists of two sheets connected in an L shape. The sheets are rectangular. The two sheets of each pair of rotating shaft bases 3.1 are vertically connected. A through hole with a diameter of 1mm is opened in the center of each sheet as a shaft ring.

[0031] Umbrella rib 2, made of ferromagnetic material, reference Figure 5 , consisting of three identical rectangular units, each of which is 40 mm long, 5 mm wide and 2 mm thick. There is a pair of symmetrical shaft cores 3.2 on both sides of the bottom end of each rectangular unit, and the shaft cores 3.2 are also made of ferromagnetic material. The two shaft cores 3.2 of each rectangular unit are inserted into the shaft rings of an adjacent pair of rotating shaft bases 3.1 to form a rotating shaft 3. The bottom end of each of the rectangular units is in contact with the top of the umbrella cap 1 or there is a small gap to ensure that each rectangular unit is rotated 90° through the rotating shaft 3, thereby realizing the conversion of the umbrella-shaped magnetic anchoring traction device between the implanted state and the working state.

[0032] The tissue clip 5 is made of anti-magnetic material to prevent interference between it and the magnetized umbrella cap 1 or umbrella rib 2 under the action of an external magnet. Figure 6 , consists of a tissue clip body and a fixing arc 6, which is connected to the fixing ring 4 through a silk thread. The fixing arc 6 refers to an arc-shaped structure on the tissue clip 5, which is used to fasten the silk thread thereon, and the fixing arc 6 is a part of the tissue clip 5.

[0033] The inserted state is a state in which the rectangular parallelepiped unit is perpendicular to the umbrella cap 1, and the working state is a state in which the rectangular parallelepiped unit is parallel to the umbrella cap 1. Figure 1 and Figure 2 In the implanted state, the entire device is cylindrical with a diameter of 10 mm and can be inserted into the abdominal cavity (or pelvic cavity) through a 10 mm puncture card. Figure 3 In working state, the whole device presents a divergent shape, and its bottom area can reach 900mm 2 , thereby increasing the riveting force and pulling force, and its height can be reduced to 4mm at the lowest, so it can be used for tissue pulling and exposure in a narrow space. The fixing ring 4 is connected to the tissue clamp 5 by a silk thread to achieve tissue grabbing and pulling. After the umbrella-shaped magnetic anchoring retractor is placed in the abdominal cavity, it is clamped by a laparoscopic instrument to move and adjust the retracting instrument.

[0034] The specific implementation process is as follows:

[0035] (1) The tissue clip 5 is fixed to the fixing ring 4 by a silk thread, and the length of the silk thread is determined by different clinical application scenarios;

[0036] (2) placing the device in an implantation state and introducing the device into the abdominal cavity (or pelvic cavity, etc.) through the puncture card;

[0037] (3) Grasp the tissue to be exposed using a tissue clip through a laparoscopic instrument;

[0038] (4) putting the device into working state through laparoscopic instruments;

[0039] (5) Grasp the device fixing ring 4 with a laparoscopic instrument, and attach the working device to the target position of the abdominal wall through the laparoscopic instrument;

[0040] (6) Adjust the position of the external magnet so that it is fixed to the umbrella-shaped magnetic anchoring traction device through magnetic force.

[0041] If space permits and the small cap cannot provide sufficient retraction exposure force for the tissue, an umbrella-shaped magnetic anchoring retraction instrument with a large cap can be used.

Claims

1. An umbrella-shaped magnetic anchoring traction device for traction exposure in magnetic anchoring laparoscopic surgery, characterized in that: include: The umbrella cap (1) has a cylindrical main body, a fixing ring (4) is arranged at the center of the bottom end of the cylinder, and three pairs of rotating shaft bases (3.1) arranged in a 120° array are arranged at the top edge, each pair of rotating shaft bases (3.1) is composed of two sheet bodies connected in an L shape, and each sheet body is provided with a through hole as a shaft ring; The rib (2) is composed of three identical rectangular parallelepiped units, each rectangular parallelepiped unit having a pair of symmetrical shaft cores (3.2) on both sides of the bottom end, and the two shaft cores (3.2) of each rectangular parallelepiped unit are inserted into the shaft rings of an adjacent pair of shaft bases (3.1) to form a shaft (3); The tissue clip (5) is composed of a tissue clip body and a fixing arc (6), wherein the fixing arc (6) is connected to the fixing ring (4) via a silk thread; Wherein, the umbrella cap (1) and the umbrella ribs (2) are made of magnetic materials, and the tissue clip (5) is made of anti-magnetic material; The umbrella cap (1) has a diameter of 10 mm and a thickness of different specifications according to the pulling force requirements. Each pair of rotating shaft bases (3.1) is 2.5 mm high, the diameter of the shaft ring is 1 mm, the outer diameter of the fixing ring (4) is 4 mm, the inner diameter is 2 mm, and the thickness is 1 mm; each rectangular parallelepiped unit is 40 mm long, 5 mm wide, and 2 mm thick; The fixing arc (6) is an arc-shaped structure on the tissue clip (5) and is used to fasten the silk thread thereon; The bottom end of each rectangular parallelepiped unit is in contact with the top end of the umbrella cap (1) or has a slight gap therebetween, so as to ensure that each rectangular parallelepiped unit is rotated 90 degrees via the rotating shaft (3), thereby realizing the conversion between an inserted state and a working state, wherein the inserted state is a state in which the rectangular parallelepiped unit is perpendicular to the umbrella cap (1), and the working state is a state in which the rectangular parallelepiped unit is parallel to the umbrella cap (1).

2. The umbrella-shaped magnetic anchoring traction device for traction exposure in magnetic anchoring laparoscopic surgery according to claim 1 is characterized in that: The sheet-like body is rectangular, and the two sheet-like bodies of each pair of rotating shaft bases (3.1) are vertically connected, and a through hole is opened at the center position of each sheet-like body.

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