Magnetic controlled intracavitary tissue retractor

Abstract

The present invention relates to a magnetically controlled intracavitary tissue retractor, which includes a tissue clamp for clamping tissue in a cavity and a motion controller that cooperates with the tissue clamp by magnetic attraction outside the cavity. When the motion controller moves outside the cavity, it can control the position state of the tissue clamp in the cavity, so as to achieve clamping and pulling of the clamped tissue through the tissue clamp; it also includes a clamping and accommodating controller, which can accommodate the tissue clamp; and the clamping and accommodating controller can also push the tissue clamp into the cavity and clamp the required tissue in the cavity. After the tissue clamp enters the cavity to clamp the tissue, the clamping and accommodating controller can release the tissue clamp and leave it in the cavity. The present invention has a compact structure, can achieve intracavitary and extracorporeal traction of tissues, reduce the space occupied by intracavitary traction, save space, reduce the trauma of traction, reduce the demand for surgical personnel, and is easy to use.

Description

Technical Field

[0001] The invention relates to a retractor, in particular to a magnetically controlled intracavitary tissue retractor, belonging to the technical field of medical devices. Background Art

[0002] In minimally invasive surgeries such as laparoscopic or endoscopic surgeries, the surgeon's hands cannot enter the patient's body cavity. When the body tissue to be operated on is covered by its own hanging tissue, partially cut free tissue, or internal organs (such as the liver and spleen), these organs must be turned over to expose the surgical site and continue the surgical process.

[0003] Currently, when laparoscopic surgery is performed to pull tissue to expose the surgical site, the method used is to make a puncture incision and insert a long-handled surgical forceps for pulling and exposure. The long-handled surgical forceps occupy the surgical space and affect the operation of the surgeon. At the same time, the puncture incision will increase the trauma and pain of the patient, and increase the scars on the patient's body surface, affecting the appearance.

[0004] There is no safe and effective traction exposure method in endoscopic surgery. Body position reversal or insertion of surgical threads through the mouth or anus for traction are often used, which has extremely poor effects. This greatly affects the progress of the operation, not only increasing the cost of the operation, but also increasing the surgical risk for the patient, which urgently needs to be improved. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a magnetically controlled intracavitary tissue retractor which has a compact structure and can realize intracavitary and extracorporeal traction of tissues, thereby reducing the space occupied by intracavitary traction, saving space, reducing the trauma of traction, and reducing the demand for surgical personnel. It is easy to use and is safe and reliable.

[0006] According to the technical solution provided by the present invention, the magnetically controlled intracavitary tissue retractor comprises a tissue clamp for clamping tissue in the cavity and a motion controller that cooperates with the tissue clamp by magnetic attraction outside the cavity. When the motion controller moves outside the cavity, it can control the position state of the tissue clamp in the cavity, so as to clamp and retract the clamped tissue through the tissue clamp;

[0007] It also includes a clamping and accommodating controller, which can be used to accommodate a tissue clamp; and the clamping and accommodating controller can also be used to push the tissue clamp into the cavity and clamp the required tissue in the cavity. After the tissue clamp enters the cavity to clamp the tissue, the clamping and accommodating controller can release the tissue clamp and retain it in the cavity.

[0008] The tissue clamp includes a tissue clamp body for clamping tissue, a clamp body opening and closing control body for cooperating with a clamping controller to control the clamping state of the tissue clamp body, and a magnetic connection body that cooperates with the magnetic attraction of a motion controller. The tissue clamp body is connected to the clamp body opening and closing control body via a clamp body connecting shaft, and the clamp body opening and closing control body is connected to the magnetic connection body; the motion controller can control the position state of the tissue clamp in the cavity by cooperating with the magnetic attraction of the magnetic connection body.

[0009] The clamping and receiving controller comprises a clamping control outer sleeve for movably receiving the tissue clamp and a clamping control push-pull rod for pushing or pulling the tissue clamp to move in the clamping control outer sleeve;

[0010] The tissue clamp and the clamp control push-pull rod are both located in the clamp control outer sleeve cavity, and the tissue clamp is located in front of the clamp control push-pull rod; the end of the clamp control push-pull rod located in the clamp control outer sleeve is detachably connected to the magnetic connection body, and the tissue clamp body is in a closed state when it is located in the clamp control outer sleeve;

[0011] When the tissue clamp body is located outside the head end of the clamping control outer sleeve and most or all of the clamp body opening and closing control body is located inside the clamping control outer sleeve, the tissue clamp body is in an open state; when the tissue clamp body is located outside the head end of the clamping control outer sleeve and a small part or all of the clamp body opening and closing control body is located outside the head end of the clamping control outer sleeve, the tissue clamp body is in a closed state.

[0012] The clamp opening and closing control body includes an elliptical elastic ring or an elastic body that is quadrilateral after opening; when the elastic ring or elastic body is in an open state, the tissue clamp body can be in a closed state; when the elastic ring or elastic body is in a compressed state, the tissue clamp body can be in an open state; the elastic ring or elastic body located in the clamping control outer sleeve is in a compressed state.

[0013] A ball head body is arranged at the end of the clamp body opening and closing control body, and a ball head cover allowing the ball head body to be embedded is arranged at the end of the magnetic attraction connecting body. The ball head body can be universally rotated in the ball head cover.

[0014] The magnetic connection body includes a block shape or a cylindrical shape, and the connection cooperation between the magnetic connection body and the clamping control push-pull rod includes a magnetic connection or a contact connection.

[0015] When the magnetic connection body is in a cylindrical shape, the clamping control push-pull rod head at the clamping control push-pull rod head end can extend into the magnetic connection body, and the clamping control push-pull rod head of the clamping control push-pull rod can be separated from the magnetic connection body.

[0016] The magnetic connection body is wrapped with a flexible protective layer.

[0017] The motion controller includes an electromagnet with adjustable magnetic field strength.

[0018] A sleeve handle is arranged at the tail end of the clamping and controlling outer sleeve, and a clamping and controlling push-pull rod handle is arranged at the end of the clamping and controlling push-pull rod.

[0019] The advantages of the present invention are as follows: the tissue clamp that has not entered the cavity is accommodated and controlled by the clamping and accommodating controller, and the motion state of the tissue clamp that enters the cavity and clamps the tissue is controlled by the motion controller, so that the tissue can be pulled in the cavity and pulled out of the cavity. When the motion controller controls the position state of the tissue clamp outside the cavity, the tissue is only clamped in the cavity by the tissue clamp, so that the space occupied by the traction device in the cavity can be effectively reduced, saving surgical space. Compared with existing surgical operations, the motion controller is magnetically connected to the tissue clamp outside the cavity, which can effectively reduce the number of puncture holes, thereby effectively reducing trauma. After the motion controller and the tissue clamp clamp cooperate to pull the tissue, the number of medical staff can be reduced, which provides the possibility for surgical operations by a single medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention.

[0021] Figure 2 It is a schematic diagram showing that the tissue clamp body of the present invention is in an open position outside the head end of the clamping control outer sleeve.

[0022] Figure 3 It is a schematic diagram showing that the tissue clamp body of the present invention is in a closed state outside the head end of the clamping control outer sleeve.

[0023] Figure 4 It is a schematic diagram of the cooperation between the motion controller and the tissue clamp of the present invention.

[0024] Figure 5 It is another schematic diagram of the structure of implementation of the present invention.

[0025] Figure 6 for Figure 5 The implementation structure corresponds to a schematic diagram in which the tissue clamp body is opened outside the head end of the clamping control outer sleeve.

[0026] Figure 7 for Figure 5 The implementation structure corresponds to a schematic diagram in which the tissue clamp body is closed outside the head end of the clamping control outer sleeve.

[0027] Explanation of the accompanying drawings: 1-clamping and controlling outer sleeve, 2-clamping and controlling push-pull rod, 3-sleeve handle, 4-clamping and controlling push-pull rod handle, 5-power cord, 6-power plug, 7-tissue clamp body, 8-clamp body connecting shaft joint, 9-clamp body opening and closing control body, 10-clamping and controlling push-pull rod head, 11-cylindrical magnetic connection body, 12-ball head body, 13-ball head cover, 14-block magnetic connection body, 15-electromagnet, 16-body wall and 17-tissue. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0029] In order to realize the in-cavity and out-of-cavity traction of tissue, reduce the space occupied by the in-cavity traction, save space, reduce the trauma of traction, and reduce the demand for surgical personnel, the present invention includes a tissue clamp for clamping tissue 17 in the cavity and a motion controller that cooperates with the tissue clamp by magnetic attraction outside the cavity. When the motion controller moves outside the cavity, it can control the position state of the tissue clamp in the cavity, so as to realize the clamping and traction of the clamped tissue 17 through the tissue clamp;

[0030] It also includes a clamping and accommodating controller, which can be used to accommodate a tissue clamp; and the clamping and accommodating controller can also be used to push the tissue clamp into the cavity and clamp the required tissue 17 in the cavity. After the tissue clamp enters the cavity and clamps the tissue 17, the clamping and accommodating controller can release the tissue clamp and retain it in the cavity.

[0031] Specifically, the cavity specifically refers to the chest cavity, abdominal cavity and other positions of the human body, the tissue 17 is the organ tissue in the cavity, and the tissue 17 can be clamped by a tissue clamp. The tissue clamp is located in the cavity, and the motion controller is located outside the cavity. The motion controller and the tissue clamp are separated by a body wall 16, such as Figure 4 As shown. The body wall 16 includes skin, blood vessels, etc. The motion controller and the tissue clamp cooperate through magnetic attraction, that is, the motion controller and the tissue clamp attract each other through magnetic energy and approach the motion controller. When the motion controller moves outside the cavity, the position state of the tissue clamp in the cavity can be controlled to clamp and pull the clamped tissue 17 through the tissue clamp; so as to obtain the required surgical field of view, etc.

[0032] When the motion controller controls the position state of the tissue clamp outside the cavity, the tissue 17 is only clamped by the tissue clamp inside the cavity, thus effectively reducing the space occupied by the traction device inside the cavity and saving surgical space. In addition, compared with existing surgical operations, the motion controller uses magnetic attraction with the tissue clamp outside the cavity, which can effectively reduce the number of puncture holes (current puncture holes generally include traction holes, video holes, and operation holes), thereby effectively reducing trauma. After the motion controller cooperates with the tissue clamp to attract and connect the tissue 17, the number of medical personnel can be reduced, providing the possibility for surgical operations by a single medical staff.

[0033] In specific implementation, when the tissue clamp has not entered the cavity, it needs to be accommodated and stored by the clamping and accommodating controller, and the clamping and accommodating controller can control the state of the tissue clamp. After the tissue clamp clamps the corresponding tissue 17 in the cavity, the tissue clamp needs to be separated from the clamping and accommodating controller so as not to affect the magnetic connection and coordination between the motion controller and the tissue clamp. In the embodiment of the present invention, the tissue clamp that has not entered the cavity is accommodated and controlled by the clamping and accommodating controller, and the motion state of the tissue clamp that enters the cavity and clamps the tissue 17 is controlled by the motion controller, so that the tissue can be pulled in the cavity and pulled outside the body.

[0034] Furthermore, the tissue clamp includes a tissue clamp body 7 for clamping tissue 17, a clamp opening and closing control body 9 for cooperating with a clamping controller to control the clamping state of the tissue clamp body 7, and a magnetic connection body that cooperates with the magnetic attraction of a motion controller. The tissue clamp body 7 is connected to the clamp opening and closing control body 9 through a clamp connecting shaft 8, and the clamp opening and closing control body 9 is connected to the magnetic connection body; the motion controller can control the position state of the tissue clamp in the cavity by cooperating with the magnetic attraction of the magnetic connection body.

[0035] In the embodiment of the present invention, the tissue clamp body 7 is in a clamping shape, and the clamping state of the tissue clamp body 7 on the tissue 17 can be controlled by the clamp body opening and closing control body 9. When the clamp body opening and closing control body 9 makes the tissue clamp body 7 in an open state, the desired tissue 17 can be located in the tissue clamp body 7, and when the clamp body opening and closing control body 9 makes the tissue clamp body 7 in a closed state, the tissue 17 located in the tissue clamp body 7 can be clamped. The tissue clamp body 7 is connected to the clamp body opening and closing control body 9 through the clamp body connecting shaft 8. The magnetic connection body is made of magnetic material, and can be magnetically attracted and matched with the motion controller through the magnetic connection body. The clamp body opening and closing control body 9 is connected to the magnetic connection body. When the magnetic connection body is magnetically attracted and matched with the motion controller, the magnetic connection body can drive the clamp body opening and closing control body 9 and the tissue clamp body 7 to follow the motion trend of the motion controller, that is, to achieve the purpose of controlling the position of the entire tissue clamp in the cavity.

[0036] Furthermore, the clamping and accommodating controller comprises a clamping control outer sleeve 1 for movably accommodating the tissue clamp and a clamping control push-pull rod 2 for pushing or pulling the tissue clamp to move in the clamping control outer sleeve 1;

[0037] The tissue clamp and the clamp control push-pull rod 2 are both located in the cavity of the clamp control outer sleeve 1, and the tissue clamp is located in front of the clamp control push-pull rod 2; the end of the clamp control push-pull rod 2 located in the clamp control outer sleeve 1 is detachably connected to the magnetic connection body, and the tissue clamp body 7 is in a closed state when it is located in the clamp control outer sleeve 1;

[0038] When the tissue clamp body 7 is located outside the head end of the clamping control outer sleeve 1 and most or all of the clamp body opening and closing control body 9 is located inside the clamping control outer sleeve 1, the tissue clamp body 7 is in an open state; when the tissue clamp body 7 is located outside the head end of the clamping control outer sleeve 1 and a small part or all of the clamp body opening and closing control body 9 is located outside the head end of the clamping control outer sleeve 1, the tissue clamp body 7 is in a closed state.

[0039] In the embodiment of the present invention, the clamping control outer sleeve 1 and the clamping control push-pull rod 2 are both required to be made of materials that meet medical standards, and the clamping control push-pull rod 2 can be inserted into the clamping control outer sleeve 1. The clamping control push-pull rod 2 can move along the length direction of the clamping control outer sleeve 1 in the clamping control outer sleeve 1. Generally, the clamping control push-pull rod 2 is coaxially distributed with the clamping control outer sleeve 1 in the clamping control outer sleeve 1. The head end of the clamping control push-pull rod 2 enters the clamping control outer sleeve 1, and the rear end of the clamping control outer sleeve 1 is provided with a sleeve handle 3, and the end of the clamping control push-pull rod 2 is provided with a clamping control push-pull rod handle 4.

[0040] The tissue clamp is located in the clamping control outer sleeve 1, and the magnetic connection body, the clamp opening and closing control body 9 and the tissue clamp body 7 in the tissue clamp are connected in sequence. The tissue clamp body 7 is closer to the head end of the clamping control outer sleeve 1 in the clamping control outer sleeve 1. The clamping control push-pull rod 2 is located at the head end of the clamping control outer sleeve 1 near the magnetic connection body, and is detachably connected to the magnetic connection body. When the tissue clamp body 7 is in the clamping control outer sleeve 1, the diameter of the clamping control outer sleeve 1 can make the tissue clamp body 7 in a closed state. When the tissue clamp body 7 is in a closed state, the tissue clamp body 7 cannot clamp the tissue 17.

[0041] When it is necessary to use the tissue clamp 7 to clamp the tissue 17, the clamp control push-pull rod 2 is used to push the magnetic connection body to move in the clamp control outer sleeve 1, so that the tissue clamp 7, the clamp opening and closing control body 9 and the magnetic connection body are gradually pushed out from the head end of the clamp control outer sleeve 1. Specifically, when the tissue clamp 7 is completely located outside the head end of the clamp control outer sleeve 1 and the clamp opening and closing control body 9 is still located inside the clamp control outer sleeve 1, the tissue clamp 7 can be in an open state due to the absence of the clamp control outer sleeve 1. The tissue clamp 7 in the open state can be used to place the corresponding tissue 17 in the cavity into the tissue clamp 7. With the continuous pushing of the clamp control push-pull rod 2, the clamp opening and closing control body 9 will also be pushed out of the head end of the clamp control outer sleeve 1; when the clamp opening and closing control body 9 is located outside the clamp control outer sleeve 1, the tissue clamp 7 can be closed, and when the tissue clamp 7 is closed, the tissue 17 located in the tissue clamp 7 can be clamped. Since the clamping control push-pull rod 2 and the magnetic connection body are detachably connected, when the clamping control push-pull rod 2 pushes the magnetic connection body into the cavity, the tissue clamp can be separated from the clamping control outer sleeve 1, so that the tissue clamp can smoothly enter the cavity. In addition, when the tissue clamp body 7 does not effectively clamp the tissue 17 in the cavity, the tissue clamp can be pulled back into the clamping control outer sleeve 1 by the clamping control push-pull rod 2, and then the above-mentioned clamping control push-pull rod 2 and tissue clamp cooperation process are repeated, and the details are not repeated.

[0042] Furthermore, the clamp opening and closing control body 9 includes an elliptical elastic ring or an elastic body that is a quadrilateral after opening; when the elastic ring or elastic body is in an open state, the tissue clamp body 7 can be in a closed state; when the elastic ring or elastic body is in a compressed state, the tissue clamp body 7 can be in an open state; the elastic ring or elastic body located in the clamping control outer sleeve 1 is in a compressed state.

[0043] Specifically, Figure 1 , Figure 2 and Figure 3 In the figure, the clamp body opening and closing control body 9 is shown as an elastic ring. Figure 5 , Figure 6 and Figure 7 , shows the case where the clamp body opening and closing control body 9 is an elastic body. After the clamp body opening and closing control body 9 is opened, the quadrilateral can be a rhombus or other quadrilaterals. By utilizing the elasticity of the elastic ring or the elastic body, the clamp body opening and closing control body 9 can be installed in the clamping control outer sleeve 1, and when the elastic ring or the elastic body is pushed out of the clamping control outer sleeve 1, the elasticity of the elastic ring or the elastic body can be in an open state. Specifically, when the elastic ring or the elastic body is in a compressed state in the clamping control outer sleeve 1, the diameter of the clamping control outer sleeve 1 can make the tissue clamp body 7 also in a compressed state, so that the tissue clamp body 7 can be accommodated.

[0044] The magnetic connection body is block-shaped or cylindrical, and the connection between the magnetic connection body and the clamping control push-pull rod 2 includes a magnetic connection. Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the magnetic connection body is in the form of a cylinder, that is, a cylinder-shaped magnetic connection body 11. Figure 5 , Figure 6 and Figure 7 , showing that the magnetic connection body is in the form of a block, that is, a block magnetic connection body 14. The specific shape of the magnetic connection body can be selected as needed, and will not be repeated here.

[0045] like Figure 5 , Figure 6 and Figure 7 As shown, when the magnetic connection body is a block-shaped magnetic connection body 14, a ball head body 12 is provided at the end of the clamp body opening and closing control body 9, and a ball head cover 13 is provided at the end of the magnetic connection body to allow the ball head body 12 to be embedded, and the ball head body 12 can be universally rotated in the ball head cover 13. Through the cooperation between the ball head body 12 and the ball head cover 13, the clamp body opening and closing control body 9 can be rotated relative to the block-shaped magnetic connection body 14 to meet the clamping needs of the tissue clamp body 7 and the clamp body opening and closing control body 9 at different positions or angles in the cavity.

[0046] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, when the magnetic connection body is in a cylindrical shape, the clamping control push-pull rod head 10 at the head end of the clamping control push-pull rod 2 can be inserted into the magnetic connection body, and the clamping control push-pull rod head 10 of the clamping control push-pull rod 2 can be separated from the magnetic connection body. Of course, when the magnetic connection body adopts a block-shaped magnetic connection body 14, the clamping control push-pull rod 2 and the block-shaped magnetic connection body 14 can also be connected by a magnetic detachable connection.

[0047] When a magnetic detachable connection is adopted, a power cord 5 and a power plug 6 are also included. When the power cord 5 and the power plug 6 are connected to an external power source, a corresponding magnetic field can be obtained at the clamping control push-pull rod head 10 of the clamping control push-pull rod 2, so that it can be magnetically connected and matched with the block magnetic attraction connector 14 or the cylindrical magnetic attraction connector 11. When the power cord 5 and the power plug 6 are separated from the external power source, the magnetic field of the clamping control push-pull rod head 10 disappears, which facilitates the separation of the clamping control push-pull rod head 10 from the cylindrical magnetic attraction connector 11 and the block magnetic attraction connector 14.

[0048] In addition, the magnetic connector is wrapped with a flexible protective layer. The protective layer can wrap the magnetic connector, and the protective layer can prevent the magnetic connector from damaging the tissue 17 and the like in the cavity. In a specific implementation, the motion controller includes an electromagnet 15 with an adjustable magnetic field strength. When the magnetic field strength of the electromagnet 15 is adjusted, the connection strength between the motion controller and the tissue clamp can be achieved, which is well known to those skilled in the art and will not be described in detail here.

Claims

1. A magnetically controlled intracavitary tissue retractor, characterized in that: It comprises a tissue clamp for clamping tissue (17) in a cavity and a motion controller that cooperates with the tissue clamp by magnetic attraction outside the cavity, wherein the motion controller can control the position state of the tissue clamp in the cavity when moving outside the cavity, so as to clamp and pull the clamped tissue (17) through the tissue clamp; It also includes a clamping and accommodating controller, which can accommodate a tissue clamp; and the clamping and accommodating controller can also push the tissue clamp into the cavity and clamp the required tissue (17) in the cavity. After the tissue clamp enters the cavity and clamps the tissue (17), the clamping and accommodating controller can release the tissue clamp and retain it in the cavity; The tissue clamp comprises a tissue clamp body (7) for clamping tissue (17), a clamp body opening and closing control body (9) for cooperating with a clamping controller to control the clamping state of the tissue clamp body (7), and a magnetic connection body for cooperating with the motion controller through magnetic attraction. The tissue clamp body (7) is connected to the clamp body opening and closing control body (9) through a clamp body connecting shaft (8), and the clamp body opening and closing control body (9) is connected to the magnetic connection body. The motion controller can control the position state of the tissue clamp in the cavity through magnetic attraction cooperation with the magnetic connection body. The tissue clamp body (7) is in a clamping shape, and the clamping state of the tissue clamp body (7) on the tissue (17) can be controlled by the clamp body opening and closing control body (9), wherein when the clamp body opening and closing control body (9) makes the tissue clamp body (7) in an open state, the desired tissue (17) can be located in the tissue clamp body (7), and when the clamp body opening and closing control body (9) makes the tissue clamp body (7) in a closed state, the tissue (17) located in the tissue clamp body (7) can be clamped; The clamping and receiving controller comprises a clamping control outer sleeve (1) for movably receiving the tissue clamp and a clamping control push-pull rod (2) for pushing or pulling the tissue clamp to move within the clamping control outer sleeve (1). The tissue clamp and the clamp control push-pull rod (2) are both located in the cavity of the clamp control outer sleeve (1), and the tissue clamp is located in front of the clamp control push-pull rod (2); the end of the clamp control push-pull rod (2) located in the clamp control outer sleeve (1) is detachably connected to the magnetic connection body, and the tissue clamp body (7) is in a closed state when located in the clamp control outer sleeve (1); When the tissue clamp body (7) is located outside the head end portion of the clamping control outer sleeve (1) and most or all of the clamp body opening and closing control body (9) is located inside the clamping control outer sleeve (1), the tissue clamp body (7) is in an open state; when the tissue clamp body (7) is located outside the head end portion of the clamping control outer sleeve (1) and a small part or all of the clamp body opening and closing control body (9) is located outside the head end portion of the clamping control outer sleeve (1), the tissue clamp body (7) is in a closed state; The tissue clamp is located inside the clamp control outer sleeve (1), and the magnetic connection body, the clamp body opening and closing control body (9), and the tissue clamp body (7) inside the tissue clamp are connected in sequence, and the tissue clamp body (7) is closer to the head end of the clamp control outer sleeve (1) inside the clamp control outer sleeve (1); The clamp body opening and closing control body (9) comprises an elliptical elastic ring or an elastic body that is quadrilateral after opening; when the elastic ring or elastic body is in an open state, the tissue clamp body (7) can be in a closed state; when the elastic ring or elastic body is in a compressed state, the tissue clamp body (7) can be in an open state; the elastic ring or elastic body located in the clamping control outer sleeve (1) is in a compressed state.

2. The magnetically controlled intracavitary tissue retractor according to claim 1 is characterized in that: A ball head body (12) is arranged at the end of the clamp body opening and closing control body (9), and a ball head cover (13) allowing the ball head body (12) to be embedded is arranged at the end of the magnetic connection body. The ball head body (12) can be universally rotated in the ball head cover (13).

3. The magnetically controlled intracavitary tissue retractor according to claim 1 is characterized in that: The magnetic connection body comprises a block or a cylinder, and the connection cooperation between the magnetic connection body and the clamping control push-pull rod (2) comprises a magnetic connection or a contact connection.

4. The magnetically controlled intracavitary tissue retractor according to claim 3 is characterized in that: When the magnetic connection body is in a cylindrical shape, the clamping control push-pull rod head (10) at the head end of the clamping control push-pull rod (2) can extend into the magnetic connection body, and the clamping control push-pull rod head (10) of the clamping control push-pull rod (2) can be separated from the magnetic connection body.

5. The magnetically controlled intracavitary tissue retractor according to claim 1 is characterized in that: The magnetic connection body is wrapped with a flexible protective layer.

6. The magnetically controlled intracavitary tissue retractor according to any one of claims 1 to 5, characterized in that: The motion controller comprises an electromagnet (15) with adjustable magnetic field strength.

7. The magnetically controlled intracavitary tissue retractor according to claim 1 is characterized in that: A sleeve handle (3) is provided at the tail end of the clamping control outer sleeve (1), and a clamping control push-pull rod handle (4) is provided at the end of the clamping control push-pull rod (2).

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