Actuator and medical device

Abstract

The utility model provides an actuator and a medical device, the actuator is used for the medical device, the medical device is provided with a contraction structure capable of tightening or loosening an organ, and the actuator comprises a shell and a transmission assembly; the transmission assembly comprises a transmission nut, a lead screw and a supply part arranged on the transmission nut, the supply part is arranged on the transmission nut, and when the transmission nut is matched with the lead screw, the supply part is used for supplying lubricant to the transmission part of the transmission nut and the lead screw; the embodiment of the utility model solves the technical problems that the lubricant cannot be supplemented in time when the lubricating effect is reduced due to the loss of the lubricant in the transmission process because the arrangement mode of the lubricant in the medical device in the related technology is single, specifically, the lubricant is only smeared on the transmission part of the screw rod and the transmission nut, and the service life of the medical device is prolonged. Therefore, the use efficiency of the medical device is reduced, and the use experience of a patient is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical treatment, and in particular to an actuator and a medical device. Background Art

[0002] In order to treat diseases such as urinary incontinence, fecal incontinence, gastroesophageal reflux disease, and to treat obesity through gastric banding, a medical device is usually implanted in the patient's body. The medical device is provided with a contraction structure to tighten a hollow human organ such as the urethra, rectum, esophagus or stomach for attachment, and a transmission component is provided between the contraction structure and the drive unit for transmitting the driving force of the drive unit to the contraction structure.

[0003] Since the friction between the screw rod and the transmission nut of the transmission assembly is relatively large during the reciprocating motion, in order to reduce the wear between the screw rod and the transmission nut, lubricant is applied between the screw rod and the transmission nut when installing the transmission assembly.

[0004] However, there is at least one of the following problems in the related technology: since the lubricant is only arranged in a single way in the medical device in the related technology, specifically, the lubricant is only applied to the transmission parts of the screw rod and the transmission nut, when the lubrication effect decreases due to lubricant loss during the transmission process, the lubricant cannot be replenished in time, thereby reducing the use efficiency of the medical device and further reducing the patient's use experience. Utility Model Content

[0005] The technical problem solved by the utility model is that due to the single setting method of the lubricant in the medical device in the related technology, the lubricant is only applied to the transmission parts of the screw rod and the transmission nut, resulting in the loss of lubricant during the transmission process and the reduction of the lubrication effect. The lubricant cannot be replenished in time, thereby reducing the use efficiency of the medical device and further reducing the patient's use experience.

[0006] To solve the above problems, on the one hand, the utility model provides an actuator, which is used for a medical device, and the medical device is provided with a contraction structure that can tighten or loosen an organ, and the actuator includes a shell; a transmission assembly, which is arranged inside the shell; the transmission assembly includes a transmission nut, which is arranged inside the shell and is a hollow structure; a screw rod, one end of which is connected to the contraction structure, and the other end at least partially extends into the hollow structure and is connected to the transmission nut, and the transmission nut cooperates with the screw rod to make the contraction structure reciprocate in the length direction; a supply assembly, which is arranged on the transmission nut, and when the transmission nut cooperates with the screw rod, the supply assembly is used to replenish lubricant to the transmission part of the transmission nut and the screw rod.

[0007] Compared with the prior art, the technical effects achieved by adopting this technical solution are: on the one hand, lubricant is replenished to the transmission parts of the transmission nut and the screw rod through the replenishment component, and when the lubrication effect decreases due to lubricant loss during the transmission process, the lubricant is replenished in time, thereby improving the use efficiency of the medical device and further improving the patient's use experience. On the other hand, the friction and wear generated by the transmission nut and the screw rod during the matching process are reduced, and the service life of the transmission component is extended.

[0008] In one example of the utility model, the replenishing assembly also includes a smear piece, which is arranged on the transmission nut to apply lubricant to the transmission part when the transmission nut and the screw rod are matched; an oil storage box, which is arranged on the outer surface of the transmission nut, the oil storage box is used to contain the lubricant, and the oil storage box is provided with an opening for one end of the smear piece to be inserted and contact with the lubricant in the oil storage box.

[0009] Compared with the prior art, the technical effect achieved by adopting this technical solution is that it is easier for the smearing piece to obtain the lubricant, thereby improving the convenience of the brake.

[0010] In an example of the present invention, the smearing member is an elastic block, and the smearing member is arranged perpendicular to the length direction of the screw rod.

[0011] Compared with the prior art, the technical effect achieved by adopting this technical solution is: ensuring that the lubricant can be evenly applied to the transmission parts, thereby enhancing the lubrication effect.

[0012] In one example of the utility model, the transmission assembly also includes a through hole, the transmission nut is provided with a through hole connected to the hollow structure, and the smear piece passes through the through hole to contact the screw rod; wherein the smear piece at least partially extends into the hollow structure so that when the transmission nut and the screw rod cooperate, the screw rod squeezes the smear piece.

[0013] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the smear piece is squeezed by the screw rod so that the smear piece can better lubricate the transmission parts, reduce the wear and friction between the transmission nut and the screw rod, and further enhance the lubrication effect.

[0014] In an example of the present invention, the smearing member is made of foam rubber, and the foam rubber is used to absorb the lubricant.

[0015] Compared with the prior art, the technical effect achieved by adopting this technical solution is: by adopting a foam rubber material with good wear resistance and elasticity, the supply part can withstand repeated pressure and friction, thereby extending the service life of the supply part.

[0016] In one example of the utility model, the actuator also includes a driving unit, which is arranged inside the shell, one end of the driving unit is rotatably connected to the contraction structure, and the other end is connected to the transmission assembly, and the driving unit provides forward driving force and reverse driving force to the contraction structure; a control unit, which is arranged inside the shell, and the driving unit is controlled by the control unit; a power supply unit, which is arranged inside the shell, and the power supply unit is connected to the control unit through a cable.

[0017] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by setting up a power supply unit, sufficient power is provided for the actuator, thereby extending the working time of the medical device, avoiding the patient from frequently replacing the medical device, and improving the patient's usage experience.

[0018] In one example of the utility model, a mounting position for installing a power supply unit is provided inside the shell, and the actuator also includes a frame body, which is provided inside the shell to accommodate the power supply unit and the control unit; and a snap-fit ​​part, which is provided at a position of the frame corresponding to the mounting position to limit the power supply unit to the mounting position.

[0019] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: by setting a frame and a fastener, the power supply unit is restricted to the installation position, thereby preventing the power supply unit from falling off from the installation position and causing damage to the actuator, thereby improving the stability of the power supply unit.

[0020] In an example of the present invention, the buckle is connected to the frame in a detachable manner.

[0021] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the fastener is detachably mounted on the frame, and when replacing the power supply unit, it is convenient for the user to disassemble and assemble the power supply unit, thereby improving the convenience of the actuator.

[0022] In an example of the present invention, either one of the buckle piece and the frame is provided with a protruding piece, and the other is provided with a locking hole matched with the protruding piece.

[0023] Compared with the prior art, the technical effect achieved by adopting this technical solution is: the convenience of the actuator is further improved.

[0024] On the other hand, the utility model provides a medical device, which includes an actuator as in any of the above technical solutions.

[0025] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: Since the medical device in this technical solution includes a brake as in any of the above technical solutions, the medical device in this technical solution includes the beneficial effects as described in any of the above technical solutions, which will not be repeated here.

[0026] After adopting the technical solution of the utility model, the technical effect that can be achieved is: lubricant is replenished to the transmission parts of the transmission nut and the screw rod through the supply component, and when the lubrication effect decreases due to lubricant loss during the transmission process, the lubricant is replenished in time, thereby improving the use efficiency of the medical device and further improving the patient's use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A three-dimensional diagram of an actuator provided in an embodiment of the utility model.

[0029] Figure 2 A schematic structural diagram of an actuator provided in an embodiment of the utility model with the housing omitted.

[0030] Figure 3 for Figure 2 Magnified view of area A in the middle.

[0031] Figure 4 for Figure 2 A cross-sectional view of the actuator shown in FIG. 1 along direction BB.

[0032] Figure 5 This is one of the partial structural schematic diagrams of a transmission assembly 300 of an actuator provided in an embodiment of the utility model.

[0033] Figure 6 The second partial structural schematic diagram of a transmission assembly 300 of an actuator provided in an embodiment of the utility model.

[0034] Figure 7 A schematic diagram of the partial structure of an oil storage box of an actuator provided in an embodiment of the utility model.

[0035] Figure 8 A schematic structural diagram of a supply component for an actuator provided in an embodiment of the utility model.

[0036] Description of reference numerals:

[0037] 100, actuator; 200, housing; 300, transmission assembly; 310, transmission nut; 320, lead screw; 321, external thread; 330, supply part; 340, oil storage box; 341, opening; 350, through hole; 400, drive unit; 500, control unit; 600, power supply unit; 700, frame; 710, snap-fit ​​part; 711, protrusion; 712, clamping hole; 800, reducer. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] like Figures 1 to 8 As shown, the utility model provides an actuator 100, which is used in a medical device. The medical device is provided with a contraction structure that can tighten or loosen an organ, and the actuator 100 drives the contraction structure to tighten or loosen the organ.

[0040] Among them, the actuator 100 includes a shell 200, a drive unit 300 and a transmission assembly 300. The drive unit 300 is arranged inside the shell 200, and the drive unit 300 is rotationally connected to the contraction structure. The drive unit 300 provides forward driving force and reverse driving force to the contraction structure; one end of the transmission assembly 300 is connected to the drive unit 300, and the other end is connected to the contraction structure.

[0041] The transmission assembly 300 includes a transmission nut 310 and a screw rod 320, and a replenishment assembly disposed on the transmission nut 310. When the transmission nut 310 and the screw rod 320 are matched, the replenishment assembly is used to replenish lubricant to the transmission part of the transmission nut 310 and the screw rod 320.

[0042] Specifically, one end of the transmission nut 310 is connected to the driving unit 300, the transmission nut 310 is a hollow structure, and the transmission nut 310 is provided with an internal thread; one end of the screw rod 320 is connected to the contraction structure, and the other end at least partially extends into the hollow structure and is connected to the transmission nut 310, and the screw rod 320 is provided with an external thread 321 that cooperates with the internal thread, so that the contraction structure can reciprocate in the length direction; the supply assembly is arranged on the transmission nut 310, and when the internal thread and the external thread 321 cooperate, the supply assembly contacts the external thread 321 of the screw rod 320, and the supply assembly applies lubricant to the external thread 321 of the screw rod 320, thereby reducing the friction and wear generated during the cooperation between the transmission nut 310 and the screw rod 320, and extending the service life of the transmission assembly 300.

[0043] Specifically, when the driving unit 300 provides a positive driving force to the contraction structure, part of the transmission component 300 is received in the inner hole to reduce the distance between the driving unit 300 and the contraction structure, thereby driving the contraction structure to tighten the organ; when the driving unit 300 provides a reverse driving force for contraction, part of the transmission component 300 is away from the inner hole to expand the distance between the driving unit 300 and the contraction structure, thereby driving the contraction structure to loosen the organ.

[0044] Specifically, Figure 4 As shown, the actuator 100 of the embodiment of the utility model is provided with a reducer 800, one end of the reducer 800 is connected to the driving motor, and the other end of the reducer 800 is connected to the transmission assembly 300, which is used to adjust the magnitude of the forward driving force and the reverse driving force.

[0045] Further, such as Figures 5 to 7 As shown, the transmission assembly 300 of the embodiment of the utility model also includes a smear member 330 arranged on the transmission nut 310 and an oil storage box 340 arranged on the outer surface of the transmission nut 310. The smear member 330 is arranged on the transmission nut 310 to apply lubricant to the transmission part when the transmission nut 310 and the screw rod 320 are matched. The oil storage box 340 is used to contain the lubricant, and the oil storage box 340 is provided with an opening 341 for one end of the smear member 330 to be inserted and contact with the lubricant in the oil storage box 340.

[0046] Specifically, the smearing member 330 of the embodiment of the utility model is an elastic block, and the smearing member 330 is arranged perpendicular to the length direction of the screw rod 320, thereby enhancing the lubrication effect.

[0047] Furthermore, if Figure 6 As shown, the transmission assembly 300 of the embodiment of the utility model also includes a through hole 350 arranged on the transmission nut 310, and the through hole 350 is connected to the hollow structure so that the smear member 330 passes through the through hole 350 and contacts the external thread 321; the smear member 330 at least partially extends into the hollow structure, so that when the internal thread contacts the external thread 321, the screw rod 320 squeezes the smear member 330.

[0048] Optionally, the smear member 330 of the embodiment of the utility model is made of foam rubber, and the foam rubber is used to absorb lubricant.

[0049] Further, such as Figures 2 to 4 As shown, the actuator 100 of the embodiment of the utility model further includes a control unit 500 and a power supply unit 600. The control unit 500 is disposed inside the housing 200, and the driving unit 300 is controlled by the control unit 500; the power supply unit 600 is disposed inside the housing 200, and the power supply unit 600 is connected to the control unit 500 through a cable.

[0050] Further, such as Figure 2 As shown, the actuator 100 of the embodiment of the utility model has a mounting position for mounting the power supply unit 600 disposed inside the housing, and the actuator 100 also includes a frame 700, and a fastening member 710 is disposed at a position corresponding to the mounting position on the frame 700 to prevent the power supply unit 600 from falling off the mounting position. The frame 700 is used to accommodate the control unit 500 and the power supply unit 600 to prevent the position of the power supply unit 600 from moving.

[0051] Furthermore, if Figure 2 and Figure 3 As shown, the fastening member 710 is connected to the frame 700 in a detachable manner.

[0052] Specifically, Figure 2 and Figure 3 As shown, either one of the buckling piece 710 and the frame body 700 is provided with a protruding piece 711 , and the other one is provided with a locking hole 712 , and the protruding piece 711 cooperates with the locking hole 712 .

[0053] On the other hand, an embodiment of the present invention further provides a medical device (not shown in the figure), and the medical device (not shown in the figure) includes an actuator 100 as in any of the above technical solutions.

[0054] Although the utility model is disclosed as above, the utility model 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 utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. An actuator, the actuator (100) being used for a medical device, characterized in that: The medical device is provided with a contraction structure capable of tightening or loosening an organ, and the actuator (100) comprises: Housing (200); A transmission assembly (300) is arranged inside the housing (200); The transmission assembly (300) comprises: A transmission nut (310), the transmission nut (310) being arranged inside the housing (200), and the transmission nut (310) being a hollow structure; a screw rod (320), one end of the screw rod (320) being connected to the contraction structure, and the other end of the screw rod at least partially extending into the hollow structure to be connected to the transmission nut (310), the transmission nut (310) cooperating with the screw rod (320) to enable the contraction structure to reciprocate in the length direction; A replenishing assembly, the replenishing assembly being arranged on the transmission nut (310), and being used to replenish lubricant to a transmission part between the transmission nut (310) and the screw rod (320) when the transmission nut (310) and the screw rod (320) are matched.

2. The actuator according to claim 1, characterized in that The replenishment assembly comprises: a smear member (330), the smear member (330) being arranged on the transmission nut (310) so as to apply lubricant to the transmission part when the transmission nut (310) and the screw rod (320) are mated; An oil storage box (340) is arranged on the outer surface of the driving nut (310), the oil storage box (340) is used to contain the lubricant, and the oil storage box (340) is provided with an opening (341) for one end of the smear member (330) to be inserted and contact the lubricant in the oil storage box (340).

3. The actuator according to claim 2, characterized in that The smearing member (330) is an elastic block, and the smearing member (330) is arranged perpendicular to the length direction of the screw rod (320).

4. The actuator according to claim 2, characterized in that: The transmission nut (310) is provided with a through hole (350) communicating with the hollow structure, and the smear member (330) passes through the through hole (350) and contacts the screw rod (320); The smear member (330) at least partially extends into the hollow structure, so that when the transmission nut (310) and the screw rod (320) cooperate, the screw rod (320) presses the smear member (330).

5. The actuator according to any one of claims 2 to 4, characterized in that: The smear member (330) is made of foam rubber, and the foam rubber is used to absorb the lubricant.

6. The actuator according to claim 1, characterized in that The actuator (100) further comprises: a driving unit (400), the driving unit (400) being arranged inside the housing (200), one end of the driving unit (400) being rotationally connected to the contraction structure, and the other end of the driving unit (400) being connected to the transmission assembly (300), and the driving unit (400) providing a positive driving force and a reverse driving force to the contraction structure; A control unit (500), the control unit (500) being arranged inside the housing (200) and controlling the driving unit (400) through the control unit (500); A power supply unit (600), the power supply unit (600) is arranged inside the housing (200), and the power supply unit (600) is connected to the control unit (500) via a cable.

7. The actuator according to claim 6, characterized in that An installation position for installing the power supply unit (600) is provided inside the housing, and the actuator (100) further comprises: a frame (700), the frame (700) being arranged inside the housing (200) to accommodate the power supply unit (600) and the control unit (500); A buckle (710), the buckle (710) being arranged at a position of the frame (700) corresponding to the installation position, so as to restrict the power supply unit (600) to the installation position.

8. The actuator according to claim 7, characterized in that The buckling piece (710) is connected to the frame (700) in a detachable manner.

9. The actuator according to claim 8, characterized in that Either one of the buckling piece (710) and the frame body (700) is provided with a protruding piece (711), and the other is provided with a locking hole that matches the protruding piece (711).

10. A medical device, characterized in that: The medical device comprises an actuator as claimed in any one of claims 1-9.

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