Medical device setting module, medical device

Abstract

Setting module for a medical device, characterized in that the setting module comprises: an actuating unit arranged in a housing of the medical device, wherein the actuating unit can be moved by an external force by a first distance; and a transmission unit connected to the actuation unit, the transmission unit comprising an active element, a fixed element, and a passive element, the active element being connected to each of the fixed element and the passive element via a transmission, the passive element being connected to a working module, the fixed element being fixedly arranged in the housing; the active element being connected to the actuation unit via a transmission and moving along the fixed element a second distance under the drive of the actuation unit, the passive element being capable of moving a third distance under the drive of the actuation unit, the third distance being greater than the first distance and greater than the second distance.

Description

Technical FieldThe invention relates to the technical field of medical devices, in particular to setting modules for medical devices and or to medical devices.Background ArtAn endoscope is a medical device that interconnects traditional optics, ergonomy, fine mechanics, modern electronics, mathematics, and software. Endoscopes have image sensors, optical lenses, light sources for illumination, mechanical devices, etc., and penetrate through the natural openings of living organisms into the body to perform appropriate interventions. Endoscopes are extremely precise medical devices which can be used for removing tissue, for example polyps or other serious areas, or for observing the tissue in question. To remove tissue, a cauterizing catheter having a wire loop is inserted into the endoscope, or the loop is directly inserted into the organism to remove and cauterize the tissue. In many surgical situations, physicians prefer tools that allow them to perform multiple tasks with minimal movement, and the amount of movement in operating an endoscope varies from physician to physician due to their customs and hand size.In the prior art, the working end sometimes needs to be moved a considerable distance, and the range of movement of the working end of the endoscope is too large for most physicians and difficult to maneuver with one hand, making it impossible to move the distal end of the endoscope a sufficient distance during surgery, which affects the degree of accuracy of the distal work and, in severe cases, may cut polyps or other tissue before the cauterizing current is applied, which may lead to bleeding and other deleterious consequences.Object of the Present Utility ModelFor this reason, there is a need to provide an easy-to-operate and widely usable setting module for a medical device and a medical device in order to solve the above-mentioned problems.On the one hand, an adjustment module for a medical device is provided, wherein the adjustment module comprises:an actuator disposed in a housing of the medical device, the actuator movable a first distance by an external force; anda transmission unit connected to the operation unit, the transmission unit comprising an active element, a fixed element, and a passive element, the active element being respectively connected to the fixed element and the passive element via a transmission, the passive element being connected to a work module, the fixed element being fixedly disposed in the housing; the active element being connected to the operation unit via a transmission and moving along the fixed element a second distance under the drive of the operation unit, the passive element being capable of moving a third distance under the drive of the operation unit, the third distance being greater than the first distance and greater than the second distance.In an embodiment, the passive element and the fixed element are racks of different lengths, wherein the passive element and the fixed element are arranged parallel and spaced apart, and the active element is a gear that meshes with the racks, respectively; wherein the total length of the fixed element defines an upper limit of the second distance and the total length of the passive element defines an upper limit of the third distance.In one embodiment, the third distance is at least twice the second distance.In an embodiment, the adjustment module further comprises a holding unit and a rotating shaft arranged in the center line of the active element, one end of the holding unit being connected to the operating unit and the other end being connected to the rotating shaft of the active element, the operating unit being capable of sliding along the housing along a first direction over the first distance, the active element rotating around the rotating shaft and moving on the fixed element along the first direction over the second distance, the first distance being equal to the second distance.In an embodiment, the holding unit comprises a first holder and a second holder, wherein the first holder surrounds the outer sides of the active element, the ends of the rotary shaft are connected to the first holder and the second holder connects the first holder to the actuating unit.In one embodiment, the fixed member is integrally formed with the housing.In an embodiment, the actuation unit comprises an actuation portion and an electrical connector, wherein the actuation portion forms a receiving cavity connected to the housing, wherein the electrical connector is arranged in the receiving cavity, wherein the electrical connector is capable of following the movement of the actuation portion and is electrically connected to the transmission unit.In an embodiment, the fixed element is used to fix an end of the active element, wherein the active element and the passive element are capable of rotating synchronously about the fixed element, wherein the passive element is arranged further away from the fixed element compared to the active element; wherein the passive element is connected to a working module, the passive element is capable of moving over the third distance under the driving of the active element.Firstly, a medical device is provided which uses an adjustment module as described above.In one embodiment, the medical device is a sling, the medical device further comprising a housing and a working module, the working module comprising a pull cord disposed in the housing and a sling body, wherein the proximal end of the pull cord is connected to a passive element to cause the pull cord to follow the passive element in a movement relative to the housing, and the distal end of the pull cord is connected to the sling body.Using the adjustment module, when the operation unit moves the first distance along the first direction relative to the operation handle, the passive element connected to the operation module can move the third distance due to the construction of the transmission unit under the driving of the active element, the third distance being greater than the first distance and greater than the second distance, whereby it is possible to realize a greater moving distance of the operation module with a smaller operation amplitude, thereby reducing the operation movement of the operator and enabling a wider range of application for different types of operators.DESCRIPTION OF THE DRAWINGSFIG. 1 shows a schematic representation of the structure of the sling according to an embodiment of the present application. FIG. 2 shows a schematic illustration of the structure of an adjusting module for a sling according to an exemplary embodiment of the present application. FIG. 3 is an enlarged schematic view of the position A in FIG. 2. FIG. 4 is a schematic diagram showing the configuration of the active element and the holding unit according to an embodiment of the present application.Detailed Description of EmbodimentsIn order to make the above-mentioned purposes, features and advantages of the present application clearer and more comprehensible, the following description of specific embodiments of the present application is set forth in detail in conjunction with the attached drawings. Many specific details are set forth in the following description to facilitate a complete understanding of the present application. However, the present application may be implemented in many other ways different from those described herein, and similar improvements may be made by those skilled in the art without sacrificing the meaning of the present application, and thus the present application is not limited by the specific embodiments disclosed below.In the description of the present application, it is to be noted that when these terms appear such as "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "upper", "lower", "inner", "outer", "clockwise", "counterclockwise", "axial", and the like, these terms refer to the orientations or positional relationships shown in the accompanying drawings and serve only to facilitate and simplify the description of the present application, but do not indicate or imply, The fact that this device or this element has to have a specific orientation or must be constructed and operated in a specific orientation and should therefore not be understood as a limitation of the present application.Moreover, when the terms "first" and "second" appear, they are for description only and are not to be taken as an indication or suggestion of relative importance or as an replication of the number of technical features stated. Thus, a feature defined by "first," "second" may include at least one such feature either explicitly or implicitly. When in the description of the present application, "multiple" is referred to, "multiple" means at least two, e.g., two, three, etc., unless expressly and specifically stated otherwise.In the present application, it should be noted that the terms "mounted", "connected", "connected" and "fixed" are to be understood in a broad sense unless expressly stated otherwise and restricted. It may be, for example, a fixed connection, a detachable connection or a connection in one piece; it may be a mechanical connection or an electrical connection; it may be a direct connection, an indirect connection via an intermediate medium, a connection within two elements or an interaction between two elements, unless expressly stated otherwise. The specific meaning of the above terms in connection with the present invention will be apparent to one skilled in the art in any particular case.Similarly, when the first feature is described in this application as being "above" or "below" the second feature, this may mean that the first and second features are in direct contact or that the first and second features are in indirect contact via an intermediate medium, unless expressly provided and indicated otherwise. Moreover, when the first feature is "over", "above", and "on" the second feature, it may mean that the first feature is directly over or diagonally over the second feature, or simply that the first feature is horizontally higher than the second feature. When the first feature is "below", "below", and "below" the second feature, it may mean that the first feature is directly below or diagonally below the second feature, or it may simply mean that the first feature is horizontally deeper than the second feature.It should be noted that when an element is referred to as being "attached" or "disposed" on another element, it may be directly on the other element or centered on the other element. If an element is considered to be "connected" to another element, it may be directly connected to the other element, or both elements may be centered. When present, the terms such as "perpendicular", "parallel", "top", "bottom", "left", "right" and the like used in the present application are merely illustrative in this application and do not represent the only embodiments.Referring to FIGS. 1 to 4, FIG. 2 is a schematic diagram showing the structure of a medical device setting module 100 according to an embodiment of the present application, which provides a medical device that can be used together with an endoscope or separately, and more specifically, can be a sling 10 used for removing a part of a tissue as shown in FIG. 1. The present application describes the sling 10 as an example of a medical device, wherein the adjustment module 100 is used in the sling 10.As shown in FIGS. 1 and 2, the sling 10 includes a housing and a working module, the housing includes an operating handle 11, an insertion portion 12 and a catheter 13, and the working module includes a pull cord 15 disposed in the housing and a sling body 14. The catheter 13 is in the form of an elongate tube with flexible insulators which can be passed through the channel of the instrument located in the insertion section 12, wherein the working module is arranged within the catheter 13, wherein a part of the working module protrudes at a distal end of the catheter 13, and a proximal end of the catheter 13 is equipped with an actuating handle 11. The pull cord 15 and the loop body 14 may be electrically conductive, the loop body 14 being annular and being changeable to another shape to be opened or closed, the pull cord 15 and the loop body 14 being fixed by an electrically conductive connector.The adjustment module 100 is arranged in the housing, usually on the actuating handle 11. A portion of the construction of the adjustment module 100 is slidably disposed on the operating handle 11 of the housing, wherein the adjustment module 100 is connected to a working module, when a portion of the construction of the adjustment module 100 is slid relative to the housing, the adjustment module 100 moves axially inside the catheter 13 (inside the tube cavity).Referring to FIG. 3, FIG. 3 is an enlarged view showing the structure of the position A in FIG. 2, and the adjustment module 100 includes an operation unit 110 and a transmission unit 120. The operation unit 110 is disposed in the housing of the medical device, and the operation unit 110 is capable of moving over the first distance under the action of an external force. The transmission unit 120 is connected to the operation unit 110, the transmission unit 120 includes an active element 122, a fixed element 121, and a passive element 123, the active element 122 is connected to the fixed element 121 and the passive element 123, respectively, by transmission, the passive element 123 is connected to the work module, and the fixed element 121 is fixedly disposed in the housing. Herein, the active element 122 is connected to the operation unit 110 via a transmission and moves along the fixed element 121 over the second distance under the driving of the operation unit 110, wherein the passive element 123 is capable of moving over the third distance under the driving of the active element 122, wherein the third distance is greater than the first distance and greater than the second distance.The operation unit 110 is disposed on the operation handle 11 and has a portion that can be operated by an external user or tool, and the operated operation unit 110 is slid along the housing for the first distance. The transmission unit 120 is disposed inside the operation handle 11 and is connected to the operation unit 110 and the proximal end of the pull cable 15, and the loop body 14 is attached to the distal end of the pull cable 15. When the pull cord 15 is driven by the transmission unit 120, the loop body 14 can move along the axial direction of the catheter 13.In use of the sling 10, the radio frequency generator is connected with the catheter 13 passing through the channel of the instrument in the insertion section 12. The distal end of the insertion portion 12 of the sling 10 is inserted into the body, and thus the catheter 13 is inserted into the body cavity. Thereby, the distal end of the catheter 13 protrudes from the distal end of the insertion portion 12, which in turn causes the loop body 14 to protrude from the distal end of the catheter 13. The operation unit 110 is thereby caused to move relative to the operation handle 11 for the first distance along the axial direction (first direction). The pull cable 15 is advanced along the first direction relative to the catheter 13. In this way, the loop body 14 extending from the front end of the catheter 13 automatically opens by its elasticity, forming a ring. By adjusting the orientation of the loop body 14 to an orientation in which it can be easily attached to the polyp, the loop body 14 is easily and reliably attached to the polyp. In this state, the operation unit 110 is moved along the direction opposite to the first direction relative to the operation handle 11 for a certain distance, whereupon the diameter of the loop body 14 is gradually reduced and the polyp is tightened.In the above method, when the operation unit 110 moves the first distance along the first direction relative to the operation handle 11, the passive member 123 connected to the work module is able to move a third distance driven by the active member 122, the third distance being greater than the first distance and greater than the second distance, due to the construction of the transmission unit 120, so that a greater moving distance of the work module is realized with a smaller operation amplitude, thereby reducing the operation movement of the operator and enabling a wider range of application for different types of operators.In an embodiment, the passive element 123 and the fixed element 121 are racks of different lengths, wherein the passive element 123 and the fixed element 121 are arranged parallel and spaced apart, and the active element 122 is a gear that meshes with the racks, respectively; wherein the total length of the fixed element 121 defines an upper limit of the second distance and the total length of the passive element 123 defines an upper limit of the third distance. In addition, the third distance is at least twice as large as the second distance.Specifically, the passive element 123 and the fixed element 121 are spaced apart from each other and arranged in parallel along the first direction inside the operation handle 11 of the housing, the serrations of the passive element 123 and the fixed element 121 face each other, and the active element 122 respectively engages with the serrations of the passive element 123 and those of the fixed element 121 face each other. When the operating unit 110 is set in motion, the active element 122 is driven to rotate along the toothing of the fixed element 121, the active element 122 drives the passive element 123 engaged on the other side to move over the third distance, thereby increasing the stroke by at least twice. When the gear is rotated counterclockwise in the embodiment shown in the figure, the passive member 123 moves the third distance along the first direction relative to the operation handle 11, and when the gear is rotated clockwise in the embodiment shown in the figure, the passive member 123 moves the third distance along a direction opposite to the first direction relative to the operation handle 11.In one embodiment, the fixed member 121 is integrally molded with the housing. In other embodiments, the fixed member 121 and the housing are independent structures, and the fixed member 121 is fixed inside the housing.In an embodiment, the adjusting module 100 further includes a holding unit 130 and a rotating shaft 124 disposed in the center line of the active element, one end of the holding unit 130 is connected to the operating unit 110 and the other end is connected to the rotating shaft 124 of the active element 122, the operating unit 110 is capable of sliding along the housing along the first direction over the first distance, and the active element 122 rotates about the rotating shaft 124 and moves along the first direction on a fixed element 121 over the second distance.Further, the holding unit 130 includes a first holder 131 and a second holder 132, the first holder 131 surrounding the outer sides of the active element 122 and not coming into contact with the active element 122 so as not to hinder the rotation of the active element 122, the ends of the rotation shaft 124 being connected to the first holder 131, and the second holder 132 being connected to the first holder 131 and the operation unit 110.Specifically, as shown in FIG. 4, the rotating shaft 124 is arranged along a direction perpendicular to the first direction, and two ends of the rotating shaft 124 extend out of the active element 122 to be connected to the holding unit 130. The first holder 131 has a bent shape, and the first holder 131 includes two first portions disposed on the both end surfaces of the active element 122, and a second portion connecting the first portions, the second portion respectively enclosing the circumferential surfaces of the active element 122. One end of the two first portions is connected to both ends of the rotating shaft 124, and the other end of the two first portions is connected to both ends of the second portion. The second bracket 132 is in the form of a rod, and the second bracket 132 is disposed at the center of the second portion and along the first direction.In some embodiments, the actuation unit 110 comprises an actuation portion 111 and an electrical connector 113, wherein the actuation portion 111 forms a receiving cavity 112 connected to the housing, wherein the electrical connector 113 is arranged, wherein the electrical connector 113 can follow the movement of the actuation portion 111 and is electrically connected to the transmission unit 120 and thus electrically connected to the working module. The electrical connector 113 is used for connection to an external radio frequency generator which supplies current to the sling 10 in order to remove the corresponding tissue. In this state, the high-frequency current is supplied from the high-frequency generator to the electric connector 113, and the high-frequency current flows from the electric connector 113 via the transmission unit 120, the traction rope 15 to the loop body 14, and finally the polyp is removed, and the supply of the high-frequency current is stopped after the polyp is removed.The electric connector 113 is arranged along a direction perpendicular to the first direction, and the electric connector 113 extends from the opening of the operation portion 111 into the accommodating cavity 112 and the operation handle 11, through the operation handle 11, to be connected to the second holder 132 of the holding unit 130. The passive element 123 or the fixed element 121 is arranged so as to avoid the electrical connector 113.The operation portion 111 has a cylindrical shape, and the operation portion 111 is directly fitted on the outer surfaces of the operation handle 11. The operation unit 110 further includes an annular portion disposed parallel to the operation portion 111. The annular portion is for receiving the index finger and the middle finger and the like to facilitate the operation by the user.In other embodiments, the sling 10 is not provided with an electrical plug 113 and a structure for connecting the holding unit 130 is provided within the actuating section 111.In an embodiment not shown in the drawings, the fixed element is used to attach an end of the active element, wherein the active element and the passive element are capable of rotating synchronously about the fixed element, wherein the passive element is arranged further away from the fixed element compared to the active element; wherein the passive element is connected to a working module, wherein the passive element is capable of moving over the third distance under the driving of the active element.Specifically, the fixed member serves as a rotation center of the active member, and the transmission unit further includes a swing arm that connects the fixed member, the passive member, and the active member to each other so that the passive member and the active member rotate synchronously about the fixed member as a circle center. The active element and the passive element are fixed in a track provided along the first direction, when an external force directly drives the active element, via the swing arm and the fixed element, the swing arm swinging around the fixed element, so that the passive element is driven to move along the first direction over the third distance. Since the passive element is farther from the circle center (fixed element) with respect to the active element when the active element moves the second distance, the passive element located in the outer circle moves the third distance larger than the second distance, thereby achieving the result of stroke amplification.The various technical features of the above-described embodiments may be combined arbitrarily, and not all possible combinations of the various technical features of the above-described embodiments are described in order to keep the description simple; however, as long as there is no contradiction in the combinations of these technical features, they should be considered to be within the scope of the present description as recorded herein.The above-described embodiments express only some embodiments of the present application which are described in a relatively specific and detailed manner, but should not be understood as limiting the scope of the patent application. It should be noted that some modifications and improvements will be possible for a person skilled in the art without departing from the concept of the present application, all of which fall within the scope of the present application. The scope of the patent application is therefore defined by the appended claims.

Claims

A medical device adjustment module, characterized in that the adjustment module comprises: an operation unit disposed in a housing of the medical device, the operation unit being movable by an external force by a first distance; and a transmission unit connected to the operation unit, the transmission unit comprising an active element, a fixed element, and a passive element, the active element being respectively connected to the fixed element and the passive element via a transmission, the passive element being connected to a work module, the fixed element being fixedly disposed in the housing; wherein the active element is connected to the actuator via a transmission and moves along the fixed element over a second distance under the actuation of the actuator, wherein the passive element is capable of moving over a third distance under the actuation of the actuator, wherein the third distance is greater than the first distance and greater than the second distance.The medical device adjustment module of claim 1, characterized in that the passive element and the fixed element are racks of different lengths, the passive element and the fixed element are arranged in parallel and spaced apart, and the active element is a gear that meshes with the racks, respectively; wherein the total length of the fixed element defines an upper limit of the second distance and the total length of the passive element defines the upper limit of the third distance.The medical device adjustment module of claim 2, wherein the third distance is at least twice the second distance.The medical device adjustment module according to claim 2, characterized in that the adjustment module further comprises a holding unit and a rotating shaft disposed in the center line of the active element, one end of the holding unit being connected to the operation unit and the other end being connected to the rotating shaft of the active element, the operation unit being capable of sliding along the housing along a first direction over the first distance, the active element rotating around the rotating shaft and moving on the fixed element along the first direction over the second distance.The medical device adjustment module according to claim 4, characterized in that the holding unit comprises a first holder and a second holder, the first holder surrounding the outer sides of the active element, the ends of the rotation shaft being connected to the first holder, and the second holder connecting the first holder to the operation unit.The medical device adjustment module of claim 2, wherein the fixed member is integrally formed with the housing.The medical device adjustment module according to claim 1, characterized in that the operation unit comprises an operation portion and an electric connector, the operation portion forming a receiving cavity connected to the housing, the electric connector being disposed in the receiving cavity, the electric connector being capable of following the movement of the operation portion and being electrically connected to the transmission unit.The medical device adjustment module according to claim 1, characterized in that the fixed member is used to fix an end of the active member, the active member and the passive member are capable of rotating synchronously about the fixed member, the passive member being disposed farther from the fixed member than the active member; the passive member is connected to the working module, and the passive member is capable of moving the third distance under the driving of the active member.Medical device, characterized in that an adjustment module according to one of claims 1 - 8 is used.The medical device of claim 9, characterized in that the medical device is a sling, the medical device further comprising a housing and a working module, the working module comprising a pull cord disposed in the housing and a sling body, the proximal end of the pull cord being connected to the passive element to cause the pull cord to follow the passive element in movement relative to the housing, and the distal end of the pull cord being connected to the sling body.

Images