Medical device and control method of medical device

Abstract

The invention provides a medical device and a control method of the medical device, the medical device comprises an actuator, a remote controller and a contraction structure, the contraction structure comprises a closure member and a flexible strip, one end of the flexible strip is connected with the closure member, and the other end of the flexible strip is connected with the actuator; when the remote controller controls the actuator to provide stretching driving force, the actuator drives the flexible strip to move in the direction close to the actuator in the axial direction so as to drive the closing piece to tighten the organ. When the remote controller controls the actuator to provide a pushing driving force, the actuator releases the flexible strip to move in the direction away from the actuator in the axial direction so as to drive the closing piece to loosen the organ. According to the embodiment of the invention, the stretching driving force or the pushing driving force is provided for the actuator through the remote controller, so that the operation of tightening and loosening the organ by the closure part can be realized, the demand of a user can be responded more quickly, and the experience feeling of the user is improved.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, and particularly relates to a medical device and a control method for the medical device. Background Art

[0002] In order to treat diseases such as urinary incontinence, fecal incontinence, gastroesophageal reflux disease, etc., and in order to treat obesity by gastric banding, a medical device is usually implanted into a patient. The medical device includes a contractile structure commonly referred to as a cuff. The contractile structure tightens a hollow human organ such as the urethra, rectum, esophagus or stomach for attachment. In order to reduce the diameter of the organ under discussion or occlude the organ, the contractile structure applies pressure to the organ. Especially in the case of urinary incontinence or fecal incontinence, the contractile structure substantially forms an artificial sphincter, which can be opened and closed by controlling the pressure applied by the cuff.

[0003] However, in the related art, the control method for the medical device implanted into the human body is relatively complex and the response speed is slow, resulting in poor user experience. Summary of the Invention

[0004] The problem solved by the present invention is the problem that the existing control method for the medical device is relatively complex.

[0005] To solve the above problem, the present invention provides a medical device, which includes:

[0006] An actuator for providing driving force;

[0007] A remote controller connected to the actuator for controlling the operation of the actuator;

[0008] A contractile structure including a closure and a flexible strip. One end of the flexible strip is connected to the closure, and the other end of the flexible strip is connected to the actuator;

[0009] When the remote controller controls the actuator to provide a tensile driving force, the actuator drives the flexible strip to move axially in a direction close to the actuator to tighten the organ by the closure;

[0010] When the remote controller controls the actuator to provide a pushing driving force, the actuator releases the flexible strip to move axially in a direction away from the actuator to loosen the organ by the closure.

[0011] Optionally, the medical device further includes a connector connecting the flexible strip and the actuator. A spring is provided in the flexible strip. Wherein, the connector includes:

[0012] a first metal member connected to the actuator, wherein the first metal member is a hollow structure;

[0013] a connecting member, the connecting member being disposed in the first metal member and connected to the spring, the connecting member having a first anchoring knot disposed at one end thereof, the first anchoring knot being movable in an axial direction within the first metal member, and the connecting member having a second anchoring knot disposed at the other end thereof, the second anchoring knot being fixedly connected to the closing member;

[0014] When the actuator provides a tensile driving force, the end of the connecting member provided with the first anchoring knot moves in the first metal member toward the actuator, so that the spring generates elastic deformation and drives the closing member fixedly connected to the second anchoring knot to tighten the organ;

[0015] When the actuator provides a pushing driving force, the spring restores its elastic deformation to move the end of the connecting member provided with the first anchoring knot in the first metal member toward away from the actuator, thereby driving the closing member fixedly connected to the second anchoring knot to release the organ.

[0016] Optionally, the connector further includes:

[0017] a connecting rod, the connecting rod being fixedly disposed in the first metal member, and having a receiving groove disposed in the connecting rod for receiving the connecting member;

[0018] An annular groove connects the connecting rod and the actuator so that the connecting member moves in the connecting rod along the axial direction.

[0019] Optionally, the actuator includes a transmission unit and a drive unit that are connected to each other, the drive unit is connected to the remote control, and the transmission unit is connected to the annular groove, wherein the drive unit provides driving force by forward rotation or reverse rotation, and the transmission unit is used to convert the forward rotation or the reverse rotation into axial movement.

[0020] Optionally, the transmission unit includes a nut and a screw rod, one end of the transmission nut is connected to the driving unit, the other end of the transmission nut is connected to one end of the screw rod, the other end of the screw rod is connected to the first metal member, and the transmission nut is a hollow structure;

[0021] When the driving unit provides a tensile driving force to the transmission nut, the lead screw moves in a direction close to the transmission nut to drive the first anchor knot in the first metal member to move in a direction close to the transmission unit, so that the spring generates elastic deformation and the closing member tightens the organ;

[0022] When the driving unit provides a pushing driving force to the transmission nut, the spring restores its elastic deformation so that the screw rod moves along the direction away from the transmission nut to release the first anchoring knot in the first metal part and move it away from the transmission unit, so that the closing member releases the organ.

[0023] Optionally, an inner hole is provided in the transmission nut. When the driving unit provides a tensile driving force to the transmission nut, the screw rod moves along the direction close to the transmission nut until it is received in the inner hole, so that the spring generates elastic deformation and the contraction structure tightens the organ;

[0024] When the driving unit provides a pushing driving force to the transmission nut, the spring restores its elastic deformation so that the screw rod moves along the direction away from the transmission nut until it leaves the inner hole, so that the contraction structure releases the organ.

[0025] Optionally, the flexible strip includes a contraction band, and an installation groove is provided in the contraction band for installing the connecting member;

[0026] The spring includes a first spring and a second spring. The first spring is arranged in the installation groove and sleeved on the outside of the connecting member. The second spring is arranged in the installation groove and sleeved on the outside of the first spring away from the connecting member. Wherein, the length of the orthographic projection of the first spring on the connecting member is greater than the length of the orthographic projection of the second spring on the connecting rod.

[0027] Optionally, the first spring includes a first part in contact with the second spring and a second part not in contact with the second spring. The second part is wound with a pitch, and the first part and the second spring are wound tightly and incompressible;

[0028] Wherein, the ratio of the pitch of the second part to the wire diameter of the first spring is 0.1-10.

[0029] Optionally, the flexible strip further includes a blocking member. The blocking member passes through the first spring and abuts against one end of the second spring away from the actuator to limit the first spring and the second spring.

[0030] The embodiment of the present application further provides a control method for a medical device. The medical device includes an actuator and a contraction structure. The contraction structure includes a closing member and a flexible strip. One end of the flexible strip is connected to the closing member, and the other end of the flexible strip is connected to the actuator. The control method includes:

[0031] Control the actuator to provide a driving force;

[0032] When controlling the actuator to provide a tensile driving force, drive the flexible strip to move axially in the direction close to the actuator to drive the closure to tighten the organ;

[0033] When controlling the actuator to provide a pushing driving force, drive the flexible strip to move axially in the direction away from the actuator to make the closure loosen the organ.

[0034] Optionally, the actuator includes a transmission nut and a screw rod, the medical device includes a connector, the connector includes a first metal part and a connecting part, one end of the connecting part is fixedly connected to the closure, a spring is arranged in the flexible strip, and when controlling the actuator to provide a tensile driving force, driving the flexible strip to move axially in the direction close to the actuator to make the closure tighten the organ includes:

[0035] Control the transmission nut to rotate forward to drive the screw rod to move in the direction close to the transmission nut, the movement of the screw rod drives one end of the connecting rod to move in the direction close to the transmission nut, so that the spring generates elastic deformation and the closure tightens the organ.

[0036] The medical device provided by the embodiment of the present application includes an actuator, a remote controller and a contraction structure. The contraction structure includes a closure and a flexible strip. One end of the flexible strip is connected to the closure, and the other end of the flexible strip is connected to the actuator; when the remote controller controls the actuator to provide a tensile driving force, the actuator drives the flexible strip to move axially in the direction close to the actuator to make the closure tighten the organ; when the remote controller controls the actuator to provide a pushing driving force, the actuator releases the flexible strip to move axially in the direction away from the actuator to make the closure loosen the organ. By providing a tensile driving force or a pushing driving force to the actuator through the remote controller in the embodiment of the present application, the operations of tightening the organ and loosening the organ by the closure can be realized, the user's needs can be responded to faster, and the user experience can be improved. Description of the Drawings

[0037] Figure 1 It is a schematic structural diagram of the medical device provided by the embodiment of the present application;

[0038] Figure 2 is Figure 1 The top view of the contraction structure in the shown medical device;

[0039] Figure 3 is Figure 1 The sectional view of the shown contraction structure along the A-A direction;

[0040] Figure 4 is Figure 3 The enlarged schematic diagram of the connector in the shown sectional view;

[0041] Figure 5 The enlarged schematic view of the flexible strip in the sectional view shown; Figure 3 In the sectional view shown;

[0042] Figure 6 The structure schematic view of the actuator in the medical device shown; Figure 1 In the medical device shown;

[0043] Figure 7 The structure schematic view of the actuator after removing the housing shown; Figure 6 After removing the housing of the actuator shown;

[0044] Figure 8 The side view of the actuator shown; Figure 7 In the actuator shown;

[0045] Figure 9 The sectional view of the actuator along the B-B direction shown; Figure 8 Along the B-B direction of the actuator shown;

[0046] Figure 10 The schematic flow chart of the control method of the medical device provided by the embodiment of the present application.

[0047] Explanation of reference numerals:

[0048] 1. Medical device; 100. Actuator; 200. Shrinkage structure; 300. Remote controller; 400. Connector;

[0049] 110. Transmission unit; 120. Driving unit;

[0050] 111. Transmission nut; 112. Screw rod; 113. Inner hole;

[0051] 121. Driving motor; 122. Reducer;

[0052] 210. Closure; 220. Flexible strip;

[0053] 221. Shrinkage band; 222. First spring; 223. Second spring; 224. Blocking member;

[0054] 310. First metal part; 330. Connector; 320. Link; 340. Annular groove; 350. First anchoring knot; 360. Second anchoring knot. Detailed implementation manners

[0055] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below.

[0056] Please refer to Figure 1 and Figure 2 , Figure 1 The structure schematic view of the medical device provided by the embodiment of the present application; Figure 2 TheFigure 1 Top view of the contraction structure in the medical device shown. In an embodiment of the present application, a medical device 1 is provided. The medical device 1 includes an actuator 100, a remote controller 300, and a contraction structure 200. The actuator 100 is used to provide a driving force. The remote controller 300 is connected to the actuator 100 and is used to control the operation of the actuator 100. The contraction structure 200 includes a closure member 210 and a flexible strip 220. One end of the flexible strip 220 is connected to the closure member 210, and the other end of the flexible strip 220 is connected to the actuator 100. When the remote controller 300 controls the actuator 100 to provide a tensile driving force, the actuator 100 drives the flexible strip 220 to move axially towards the actuator 100 to tighten the organ by the closure member 210. When the remote controller 300 controls the actuator 100 to provide a pressing driving force, the actuator 100 releases the flexible strip 220 to move axially away from the actuator 100 to loosen the organ by the closure member 210. In the embodiment of the present application, by the remote controller 300 providing a tensile driving force or a pressing driving force to the actuator 100, the operations of tightening and loosening the organ by the closure member 210 can be achieved. The medical device 1 is simple and easy to operate, convenient for users to use, and the method of controlling the organ by the medical device 1 is simple and does not require complex program control, so that the user's needs can be responded to faster and the user experience can be improved.

[0057] Among them, it should be noted that the remote controller 300 can be connected to the actuator 100 through a cable or through a wireless signal, and specifically can be set according to the actual situation. There is no specific limitation here, as long as the remote controller 300 can control the actuator 100.

[0058] Please continue to refer to Figure 3 and Figure 4 , [[ID= is ​ a cross-sectional view of the contraction structure shown along the A-A direction, ​ is ​A cross-sectional view of the connector in the contracted configuration is shown. The medical device 1 further includes a connector 400, which connects the flexible strip 220 and the actuator 100. The flexible strip 220 includes a spring. The connector 400 includes a first metal member 310 and a connector 330. The connector 330 is connected to the spring. The first metal member 310 is connected to the actuator 100. The first metal member 310 is a hollow structure. The connector 330 is disposed within the first metal member 310. A first anchoring knot 350 is disposed at one end of the connector 330, and the first anchoring knot 350 moves axially within the first metal member 310. A second anchoring knot 360 is disposed at the other end of the connector 330. The second anchoring knot 360 is fixedly connected to the closure member 210. When the actuator 100 provides a tensile driving force, one end of the connecting member 330 provided with the first anchoring knot 350 moves in the first metal member 310 toward the actuator 100, so that the spring is compressed to produce elastic deformation and drives the closing member 210 fixedly connected to the second anchoring knot 360 to wrap around the organ to tighten the organ; when the actuator 100 provides a pushing driving force, the spring restores the elastic deformation so that the one end of the connecting member 330 provided with the first anchoring knot 350 moves in the first metal member 310 toward away from the actuator 100, thereby driving the closing member 210 fixedly connected to the second anchoring knot 360 to loosen the organ. Specifically, since one end of the connecting member 330 provided with the second anchoring knot 360 is fixedly connected to the closing member 210, that is, the one end of the connecting member 330 provided with the second anchoring knot 360 cannot move freely in the first metal member 310, therefore, when the actuator 100 provides driving force, the one end of the connecting member 330 provided with the first anchoring knot 350 moves in the first metal member 310, which will cause the one end of the connecting member 330 provided with the second anchoring knot 360 to follow the movement of the first anchoring knot 350 and drive the closing member 210 to bend, thereby causing the closing member 210 to be wound around the organ to form a closed, basically circular hoop that can tighten the organ.

[0059] In some embodiments, connector 330 comprises at least one of a filament, a thread, a cable, or a flat strip.

[0060] In some embodiments, the connector 400 further includes a connecting rod 320 and an annular groove 340. The connecting rod 320 is fixedly disposed within the first metal member 310. A receiving groove is provided within the connecting rod 320 to accommodate the connecting member 330. The annular groove 340 connects the connecting rod 320 and the actuator 100 so that the connecting member 330 can move axially within the connecting rod 320. Since the annular groove 340 connects the connecting rod 320 and the actuator 100, when the actuator 100 moves, the connecting rod 320 can also move. However, since the connecting rod 320 is fixedly connected and cannot move, the connecting member 330 can move axially within the connecting rod 320.

[0061] Please continue to refer to ​ , ​ which ​ is an enlarged schematic view of the flexible strip in the cross-sectional view shown. The flexible strip 220 includes a contraction band 221. An installation groove is provided in the contraction band 221 for installing a connecting member 330. The spring includes a first spring 222 and a second spring 223. The first spring 222 is arranged in the installation groove and sleeved outside the connecting member 330; the second spring 223 is arranged in the installation groove and sleeved outside the first spring 222 away from the connecting member 330. Among them, the length of the orthographic projection of the first spring 222 on the connecting member 330 is greater than the length of the orthographic projection of the second spring 223 on the connecting rod.

[0062] It can be understood that when the actuator 100 generates a tensile driving force, the first spring 222 and the second spring 223 are in a compressed state, causing the organ to tighten; when the actuator 100 generates a pushing drive, the first spring 222 and the second spring 223 in the compressed state are naturally released, thereby loosening the organ.

[0063] Among them, sleeving the first spring 222 outside the connecting member 330 can ensure the resilience of the contraction band 221, so that the contraction band 221 can be reused multiple times, avoiding the situation of replacing the flexible strip 220 multiple times and saving costs. In addition, by arranging the second spring 223 outside the first spring 222 away from the connecting member 330, it can ensure that the first spring 222 remains in its original state when the contraction bag rebounds and does not get into a mess, thereby ensuring the resilience of the first spring 222.

[0064] Among them, the first spring 222 includes a first part in contact with the second spring 223 and a second part not in contact with the second spring 223. The second part is wound with a pitch, and the first part and the second spring 223 are wound tightly and cannot be compressed.

[0065] Among them, the ratio of the pitch of the second part to the wire diameter of the first spring 222 is 0.1 - 10. In some embodiments, the ratio of the pitch of the second part to the wire diameter of the first spring 222 is 0.7 or 1.3.

[0066] In some embodiments, the densities of the first spring 222 and the second spring 223 are different. For example, the density of the first spring 222 per unit length is greater than the density of the second spring 223 per unit length, so that the second spring 223 can better maintain the shape of the first spring 222.

[0067] In some embodiments, the flexible strip 220 includes a plurality of transverse strengthening elements that extend from the surface of the flexible strip 220 opposite to the smooth surface, and the smooth surface is arranged to contact the user's organ.

[0068] The flexible strip 220 further includes a stopper 224 which is sleeved on the first spring 222 and abuts against one end of the second spring 223 away from the actuator 100 to limit the positions of the first spring 222 and the second spring 223.

[0069] Please continue to refer to ​ , ​ which is ​ a schematic structural view of the actuator in the medical device shown; ​ which is ​ a schematic structural view of the actuator after removing the housing; ​ which is ​ a side view of the actuator shown; ​ which is ​ a sectional view of the actuator along the direction of B-B shown. The actuator 100 includes a transmission unit 110 and a driving unit 120 which are connected to each other. The driving unit 120 is connected to the remote controller 300, and the transmission unit 110 is connected to the annular groove 340. Among them, the driving unit 120 provides driving force by rotating forward or backward, and the transmission unit 110 is used to convert the forward rotation or backward rotation into axial movement.

[0070] The transmission unit 110 includes a nut and a screw rod 112. One end of the transmission nut 111 is connected to the driving unit 120, the other end of the transmission nut 111 is connected to one end of the screw rod 112, and the other end of the screw rod 112 is connected to the first metal part 310. The transmission nut 111 is of a hollow structure. When the driving unit 120 provides a tensile driving force to the transmission nut 111, the first spring 222 and the second spring 223 are compressed to generate elastic deformation, and the screw rod 112 moves along the direction close to the transmission nut 111 to drive the first anchoring knot 350 in the first metal part 310 to move towards the transmission unit 110, so as to tighten the organ by the closing member 210. When the driving unit 120 provides a pressing driving force to the transmission nut 111, the first spring 222 and the second spring 223 recover elastic deformation to make the screw rod 112 move along the direction away from the transmission nut 111 to drive the first anchoring knot 350 in the first metal part 310 to move away from the transmission unit 110, so as to loosen the organ by the closing member 210. In this application, by setting the transmission nut 111 as a hollow structure, the screw rod 112 can move axially in the transmission nut 111. The screw rod 112 converts the rotation of the transmission nut 111 into axial movement, and drives the connecting member 330 in the first metal part 310 according to the axial movement of the screw rod 112, thereby driving the closing member 210 to tighten and loosen the organ. The device has a simple structure, can quickly respond to the needs of users, and improves the user experience.

[0071] In some embodiments, an inner hole 113 is provided in the transmission nut 111. When the driving unit 120 provides a tensile driving force to the transmission nut 111, the first spring 222 and the second spring 223 are compressed to generate elastic deformation, and the screw rod 112 moves in the direction close to the transmission nut 111 until it is accommodated in the inner hole 113 to tighten the organ by the contraction structure 200. When the driving unit 120 provides a pressing driving force to the transmission nut 111, the first spring 222 and the second spring 223 recover elastic deformation to make the screw rod 112 move in the direction away from the transmission nut 111 until it leaves the inner hole 113 to loosen the organ by the contraction structure 200. In this application, by accommodating the transmission unit 110 in the inner hole 113 and away from the inner hole 113 to reduce or increase the distance between the driving unit 120 and the contraction structure 200, the adjustment range of the size of the closing loop is increased. Furthermore, the size of the closing loop for tightening the organ can be adjusted according to the needs of different users, avoiding the situation of the closing loop being too tight or too loose, and improving the user experience.

[0072] It should be noted that in this application, part of the transmission unit 110 is accommodated in the inner hole 113, which can not only ensure the adjustment of the tightening degree of the contraction structure 200, but also reduce the occupied volume of the medical device 1 in the human body to relieve the foreign body sensation of the medical device 1 in the user's body.

[0073] Among them, the occupancy of the transmission unit 110 in the inner hole 113 can be adjusted according to the size of different user organs, the comfort level of the user, and the needs of those skilled in the art, and no specific limitation is made here.

[0074] In some embodiments, the driving unit 120 includes at least one driving motor 121 and a speed reducer 122. The driving motor 121 is used to provide a tensile driving force and a pressing driving force. One end of the speed reducer 122 is connected to the driving motor 121, and the other end of the speed reducer 122 is connected to the transmission unit 110, which is used to adjust the magnitude of the tensile driving force and the pressing driving force to avoid the situation of organ damage caused by excessive driving force of the driving motor 121.

[0075] Please continue to refer to ​ , ​ which is a schematic flow chart of the control method of the medical device provided by the embodiment of this application. The embodiment of this application also provides a control method for a medical device 1. The medical device 1 includes an actuator 100 and a contraction structure 200. The contraction structure 200 includes a closure 210 and a flexible strip 220. One end of the flexible strip 220 is connected to the closure 210, and the other end of the flexible strip 220 is connected to the actuator 100. The flow of the control method is as follows:

[0076] 101. Control the actuator to provide a driving force.

[0077] Control the driving motor 121 in the actuator 100 to rotate forward to provide a tensile driving force, or control the driving motor 121 to rotate reversely to provide a pressing driving force.

[0078] 102. When the control actuator provides a tensile driving force, the driving flexible strip moves axially towards the actuator to tighten the closing member on the organ.

[0079] The actuator 100 includes a transmission nut 111 and a lead screw 112. The medical device 1 includes a connector 400. The connector 400 includes a first metal part 310 and a connecting member 330. One end of the connecting member 330 is fixedly connected to the closing member 210.

[0080] A spring is provided inside the flexible strip. When the control actuator 100 provides a tensile driving force, driving the flexible strip 220 to move axially towards the actuator 100 to tighten the closing member 210 on the organ includes: controlling the transmission nut 111 to rotate forward to drive the lead screw 112 to move towards the transmission nut 111, and the movement of the lead screw 112 drives one end of the connecting rod to move towards the transmission nut 111, so that the spring generates elastic deformation to tighten the closing member 210 on the organ.

[0081] 103. When the control actuator provides a pressing driving force, the flexible strip moves axially away from the actuator to loosen the closing member on the organ.

[0082] When the control actuator 100 provides a pressing driving force, driving the flexible strip 220 to move axially away from the actuator 100 to loosen the closing member 210 on the organ includes: controlling the transmission nut 111 to rotate reversely to drive the lead screw 112 to move away from the transmission nut 111, and the spring resumes elastic deformation to drive the movement of the lead screw 112 to drive one end of the connecting rod to move away from the transmission nut 111, so as to loosen the closing member 210 on the organ.

[0083] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. A medical device (1), characterized in that The medical device (1) comprises: An actuator (100), the actuator (100) being used to provide a driving force; a remote controller (300), the remote controller (300) being connected to the actuator (100) and being used to control the operation of the actuator (100); a contraction structure (200), the contraction structure (200) comprising a closure member (210) and a flexible strip (220), one end of the flexible strip (220) being connected to the closure member (210), and the other end of the flexible strip (220) being connected to the actuator (100); When the remote controller (300) controls the actuator (100) to provide a stretching driving force, the actuator (100) drives the flexible strip (220) to move axially toward the actuator (100) so that the closing member (210) tightens the organ; When the remote controller (300) controls the actuator (100) to provide a pushing driving force, the actuator (100) releases the flexible strip (220) to move axially away from the actuator (100) so that the closing member (210) releases the organ.

2. The medical device (1) according to claim 1, characterized in that The medical device (1) further comprises a connector (400), wherein the connector (400) connects the flexible strip (220) and the actuator (100), wherein a spring is provided in the flexible strip (220), wherein the connector (400) comprises: a first metal member (310), the first metal member (310) being connected to the actuator (100), and the first metal member (310) being a hollow structure; a connecting member (330), the connecting member (330) being disposed in the first metal member (310), the connecting member (330) being connected to the spring, a first anchoring knot (350) being disposed at one end of the connecting member (330), and the first anchoring knot (350) being movable in an axial direction within the first metal member (310), and a second anchoring knot (360) being disposed at the other end of the connecting member (330), and the second anchoring knot (360) being fixedly connected to the closing member (210); When the actuator (100) provides a tensile driving force, one end of the connecting member (330) provided with the first anchoring knot (350) moves in the first metal member (310) toward the actuator (100), so that the spring generates elastic deformation and drives the closing member (210) fixedly connected to the second anchoring knot (360) to tighten the organ; When the actuator (100) provides a pushing driving force, the spring recovers its elastic deformation so that the end of the connecting member (330) provided with the first anchoring knot (350) moves in the first metal member (310) in a direction away from the actuator (100), thereby driving the closing member (210) fixedly connected to the second anchoring knot (360) to release the organ.

3. The medical device (1) according to claim 2, characterized in that The connector (400) further comprises: a connecting rod (320), the connecting rod (320) being fixedly disposed in the first metal member (310), and a receiving groove being provided in the connecting rod (320) for receiving the connecting member (330); An annular groove (340) connects the connecting rod (320) and the actuator (100) so as to enable the connecting member (330) to move in an axial direction within the connecting rod (320).

4. The medical device (1) according to claim 3, characterized in that The actuator (100) comprises a transmission unit (110) and a drive unit (120) which are connected to each other, wherein the drive unit (120) is connected to the remote controller (300), and the transmission unit (110) is connected to the annular groove (340), wherein the drive unit (120) provides a driving force by rotating in a forward direction or in a reverse direction, and the transmission unit (110) is used to convert the forward rotation or the reverse rotation into an axial movement.

5. The medical device (1) according to claim 4, characterized in that The transmission unit (110) comprises a transmission nut (111) and a screw rod (112); one end of the transmission nut (111) is connected to the drive unit (120); the other end of the transmission nut (111) is connected to one end of the screw rod (112); the other end of the screw rod (112) is connected to the first metal member (310); and the transmission nut (111) is a hollow structure; When the driving unit (120) provides a tensile driving force to the transmission nut (111), the screw rod (112) moves in a direction close to the transmission nut (111) to drive the first anchoring knot (350) in the first metal member (310) to move in a direction close to the transmission unit (110), so that the spring generates elastic deformation and the closing member (210) tightens the organ; When the driving unit (120) provides a pushing driving force to the transmission nut (111), the spring recovers its elastic deformation to make the screw rod (112) move in a direction away from the transmission nut (111) to release the first anchoring knot (350) in the first metal part (310) to move in a direction away from the transmission unit (110), so that the closing member (210) releases the organ.

6. The medical device (1) according to claim 5, characterized in that The inner hole (113) is provided in the transmission nut (111), and when the driving unit (120) provides a tensile driving force to the transmission nut (111), the screw rod (112) moves in a direction close to the transmission nut (111) until it is accommodated in the inner hole (113), so that the spring generates elastic deformation and the contraction structure (200) tightens the organ; When the driving unit (120) provides a pushing driving force to the transmission nut (111), the spring recovers its elastic deformation to make the screw rod (112) move in a direction away from the transmission nut (111) until it leaves the inner hole (113), so that the contraction structure (200) loosens the organ.

7. The medical device (1) according to any one of claims 2 to 6, characterized in that The flexible strip (220) includes a shrinking band (221), and a mounting groove is provided in the shrinking band (221), and the mounting groove is used to install the connecting member (330); The spring comprises a first spring (222) and a second spring (223), wherein the first spring (222) is arranged in the installation groove and sleeved on the outside of the connecting member (330), and the second spring (223) is arranged in the installation groove and sleeved on the outside of the first spring (222) away from the connecting member (330), wherein the orthographic projection length of the first spring (222) on the connecting member (330) is greater than the orthographic projection length of the second spring (223) on the connecting rod.

8. The medical device (1) according to claim 7, characterized in that The first spring (222) includes a first portion in contact with the second spring (223) and a second portion not in contact with the second spring (223), the second portion is pitch-wound, and the first portion and the second spring (223) are densely wound and incompressible; The ratio of the pitch of the second portion to the wire diameter of the first spring (222) is 0.1 to 10.

9. The medical device (1) according to claim 7, characterized in that The flexible strip (220) further includes a blocking member (224), which is passed through the first spring (222) and abuts against an end of the second spring (223) away from the actuator (100) to limit the first spring (222) and the second spring (223).

10. A method for controlling a medical device (1), characterized in that: The medical device (1) comprises an actuator (100) and a contraction structure (200), wherein the contraction structure (200) comprises a closure member (210) and a flexible strip (220), wherein one end of the flexible strip (220) is connected to the closure member (210), and the other end of the flexible strip (220) is connected to the actuator (100), and the control method comprises: controlling the actuator (100) to provide driving force; When the actuator (100) is controlled to provide a tensile driving force, the flexible strip (220) moves axially toward the actuator (100) to allow the closure member (210) to tighten the organ; When the actuator (100) is controlled to provide a pushing driving force, the flexible strip (220) moves axially away from the actuator (100) to allow the closing member (210) to release the organ.

11. The control method according to claim 10, characterized in that: The actuator (100) includes a nut and a screw (112), the medical device (1) includes a connector (400), the connector (400) includes a first metal part (310) and a connecting part (330), one end of the connecting part (330) is fixedly connected to the closing part (210), a spring is provided in the flexible strip (220), and when the actuator (100) is controlled to provide a tensile driving force, the flexible strip (220) is driven to move in an axial direction toward the actuator (100) so that the closing part (210) tightens the organ, comprising: The nut is controlled to rotate in a positive direction to drive the screw rod (112) to move toward the nut. The movement of the screw rod (112) drives one end of the connecting rod to move toward the nut, so that the spring produces elastic deformation and the closing member (210) tightens the organ.

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