A wire thruster assembly

Abstract

The present invention provides a wire pusher assembly, belonging to the technical field of medical devices, comprising: a pusher body having a propulsion cavity inside for radially limiting a wire and an interlocking shaft connection structure on the side; a slider adapted to slide on the pusher body in a direction parallel to the axis of the propulsion cavity, and the slider having a connection structure for clamping the wire; a push rod for pushing the slider to slide in a chute inside the pusher body, and the push rod being a stable three-bar structure; an alignment tool having a limit groove for accommodating the wire and a limit block for preventing the wire from coming out, and after the rear end of the alignment tool is adapted to be connected to the pusher body, the limit groove is opposite to the propulsion cavity; for the wire pusher assembly of the present invention, the wire is radially restricted through the propulsion cavity of the pusher body, and the wire will not be bent during the propulsion process, thereby improving the convenience and reliability of pushing the wire into the pulse generator.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a wire pusher assembly. Background Art

[0002] With the development of neuromodulation technology, nerve stimulator technologies represented by deep brain stimulators, vagus nerve stimulators, spinal cord stimulators, and sacral nerve stimulators have been continuously applied and popularized. Correspondingly, the process requirements for wire products involved in stimulator systems have also been continuously improved. Since wires with smaller stiffness are beneficial to the activities of patients, can reduce the discomfort of the wire implantation site of patients, and can improve the service life of the wires, it is the current and future trend to make the wires have smaller stiffness and be more fatigue-resistant.

[0003] As the wire becomes softer and softer, the operation of inserting the wire into the top cover of an Implantable Pulse Generator (IPG) will become difficult. Currently, during the process of inserting the wire into the IPG top cover, generally, a doctor holds the wire by hand and inserts it into the IPG top cover. Among them, the position where the doctor holds the wire, the magnitude of the wire clamping force, the magnitude of the wire pushing force, the distance of each push, the depth of the push, etc. are all uncertain factors, so the influence of the doctor's hand on the wire cannot be determined, and different operation methods result in different experiences for doctors.

[0004] For example, during the operation, if the position where the wire is held is too long from the end face of the IPG top cover, it may cause the wire to be difficult to insert during the process of inserting the wire into the top cover due to large bending deformation, and even cause permanent deformation of the wire, thereby affecting the function of the pulse generator. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the wire is difficult to insert when the wire is inserted into the IPG top cover in the prior art, so as to provide a wire pusher assembly that can improve the convenience and reliability of wire insertion.

[0006] To solve the above technical problem, the present invention provides a wire pusher assembly, including: a pusher body having a pushing cavity inside for radially limiting a wire, and the wire is adapted to be axially translated and pushed inside the pushing cavity;

[0007] A slider, cooperatively connected with the pusher body, the slider is adapted to slide on the pusher body in a direction parallel to the axis of the pushing cavity, and the slider has a connection structure for clamping the wire; the pusher body has a chute for limiting the sliding path of the slider;

[0008] The push rod is fixedly connected to the slider and the push handle. The push rod has a stable three-rod structure and stably pushes the slider along the direction of the chute inside the thruster body.

[0009] The alignment tool has a limiting groove for accommodating the wire and a limiting block for preventing the wire from coming out. The rear end of the alignment tool is adapted to be connected to the thruster body. After connection, the limiting groove on the alignment tool is opposite to the propulsion cavity inside the thruster body.

[0010] Optionally, the thruster body and the alignment tool are detachably connected.

[0011] Optionally, the alignment tool has a socket, and the thruster body has a protruding plate that cooperates with the socket. The thruster body and the alignment tool are snap-connected by inserting the protruding plate into the socket.

[0012] Optionally, the cross-section of the protruding plate is a U-shaped structure, the protruding plate has a neck that indents inward, and the socket has a rib that engages with the neck.

[0013] Optionally, the socket has a cover plate that extends inward, and the sides of the protruding plate respectively abut against the lower surface of the cover plate.

[0014] Optionally, the limiting groove on the alignment tool is a semi-open groove.

[0015] Optionally, the front end of the limiting groove on the alignment tool is closed.

[0016] Optionally, the thruster body includes a lower shell and an upper shell that can be separated, and the propulsion cavity is formed between the upper shell and the lower shell.

[0017] Optionally, an upper slider and a lower slider are respectively arranged on the upper shell and the lower shell. There is a propulsion block on the upper slider. When the lower shell and the upper shell are buckled, the upper slider and the lower slider are inserted and connected to each other, and the combination of the upper slider and the lower slider is driven by the propulsion block.

[0018] Optionally, an upper slider and a lower slider are respectively arranged on the upper shell and the lower shell. When the lower shell and the upper shell are buckled, the upper slider and the lower slider approach each other to squeeze the wire. A first push handle and a second push handle are arranged outside the thruster body. The first push handle and the second push handle are respectively connected to the upper slider and the lower slider, and the upper slider and the lower slider are driven to move synchronously by simultaneously pushing the first push handle and the second push handle.

[0019] Optionally, the interlocking rotating shaft connection structure includes: at least two sets of first structures on one side edge of the upper shell and at least two sets of second structures on the lower shell that cooperate with the at least two sets of first structures; each set of the first structures includes a first connecting plate or two first connecting plates arranged in parallel at intervals, and on the first connecting plate, there are rotating shafts coaxially extending towards both sides of this set of first structures; each set of the second structures includes two second connecting plates arranged in parallel at intervals, and on the second connecting plates, there are coaxial insertion holes for inserting the rotating shafts respectively, so that after the rotating shafts are inserted into the insertion holes, the upper shell and the lower shell can rotate along the axial direction of the rotating shafts. Optionally, on the side edges of the lower shell and the upper shell away from the rotating shafts, there are respectively offset turning wings.

[0020] The technical solution of the present invention has the following advantages:

[0021] 1. When the wire pusher assembly provided by the present invention is used for the operation of inserting a wire into the upper shell of a pulse generator, the wire is radially restricted through the pushing cavity of the pusher body, and only a part of the head of the wire is left for the overall insertion into the top cover of the pulse generator. Then, the wire is pushed towards the pulse generator through the slider in the pushing cavity. Since the wire is radially limited in the pushing cavity, the wire will not be bent during the pushing process, thereby improving the convenience and reliability of pushing the wire into the pulse generator.

[0022] The direct reason that it is difficult to push into the pulse generator in the prior art is that the resistance of the wire during the insertion into the IPG top cover exceeds the supporting force of a wire of a certain length. On the one hand, the reaction force of the resistance suffered by the wire is consumed by the deformation of the wire itself, and it is difficult to feedback the resistance; on the other hand, the thrust applied to the wire is also consumed by the deformation of the wire itself, and it is difficult to transmit the thrust. Therefore, the wire pusher assembly provided by the present invention restricts the radial deformation of the wire through the pushing cavity, so that the thrust acting on the wire can be completely used for the pushing of the wire, and the feel of inserting the wire is improved.

[0023] 2. The wire pusher assembly provided by the present invention, through the cooperation of the alignment tool and the pusher body, can limit the distance of the wire exposed from the pusher body, thereby controlling the length when the wire is pushed as a whole, and ensuring the accuracy of the position of the wire pushed into the pulse generator.

[0024] 3. The wire pusher assembly provided by the present invention, the pusher body can be separated, and the pusher body can divide the pushing cavity into two halves through separation. When separating the pusher body and the wire, the wire can be separated radially, thereby avoiding the problem that the wire is taken out of the top cover of the pulse generator by the pusher body during separation. Description of the Drawings

[0025] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is a perspective view of the wire pusher assembly according to an embodiment of the present invention;

[0027] Figure 2 is Figure 1 an exploded view of;

[0028] Figure 3 is a top view of the wire pusher assembly according to an embodiment of the present invention;

[0029] Figure 4 is a bottom view of the wire pusher assembly according to an embodiment of the present invention;

[0030] Figure 5 is a left view of the wire pusher assembly according to an embodiment of the present invention;

[0031] Figure 6 is a right view of the wire pusher assembly according to an embodiment of the present invention;

[0032] Figure 7 is a top view of the assembly according to an embodiment of the present invention;

[0033] Figure 8 is Figure 7 a cross-sectional view taken along line A-A in;

[0034] Figure 9 is Figure 7 a cross-sectional view taken along line B-B in;

[0035] Figure 10 is Figure 7 a cross-sectional view taken along line C-C in;

[0036] Figure 11 is an axonometric top-down perspective view of the lower housing according to an embodiment of the present invention;

[0037] Figure 12 is an axonometric bottom-up perspective view of the lower housing according to an embodiment of the present invention;

[0038] Figure 13 is an axonometric top-down perspective view of the upper housing according to an embodiment of the present invention;

[0039] Figure 14 is an axonometric bottom-up perspective view of the upper housing according to an embodiment of the present invention;

[0040] Figure 15It is a perspective view of the push handle slider according to an embodiment of the present invention;

[0041] Figure 16 It is a left view of the push handle slider according to an embodiment of the present invention;

[0042] Figure 17 It is a perspective view of the wire pusher according to an embodiment of the present invention;

[0043] Figure 18 It is a perspective view of the alignment tool according to an embodiment of the present invention;

[0044] Figures 19 - 25 It is a schematic diagram of the usage process according to an embodiment of the present invention;

[0045] Figures 26 - 27 It is a schematic structural diagram of two alternative solutions according to an embodiment of the present invention.

[0046] Explanation of reference numerals:

[0047] 1, wire pusher; 2, alignment tool; 3, wire; 4, pusher body; 5, lower shell; 6, upper shell; 7, rotating shaft; 8, slider; 9, jaw; 10, propulsion chamber; 11, limiting groove; 12, turning wing; 13, chute; 14, upper slideway; 15, lower slideway; 16, positioning groove; 17, positioning boss; 18, card slot; 19, buckle; 20, push rod; 21, push handle; 22, support groove; 23, socket; 24, extending plate; 25, neck; 26, rib; 27, cover plate; 28, limiting block; 29, pulse generator; 30, torsion spring; 31, clamping handle; 32, lock; 34, lower slider; 35, propulsion block; 36, first push handle; 37, second push handle. Detailed implementation manners

[0048] Next, the technical solutions of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0049] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0051] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0052] This embodiment provides a wire pusher assembly, as Figure 1 shown, including: a wire pusher 1 and an alignment tool 2. The wire pusher 1 and the alignment tool 2 are detachably connected. After the wire 3 extending from the pusher body 4 is positioned by the alignment tool 2, the alignment tool 2 can be removed, so as to facilitate inserting the wire 3 exposed from the pusher body 4 into the top cover of the pulse generator 29. Specifically, in this embodiment, the alignment tool 2 and the wire pusher 1 are detachably connected by snap connection, and they can also be connected by other conventional connection forms in the art, such as being connected by fasteners, and the fasteners include screws. In addition, as an alternative embodiment, the alignment tool 2 and the wire pusher 1 can also be rotatably connected.

[0053] The wire pusher assembly of this embodiment is used to insert the wire 3 into the top cover of the pulse generator 29. The inserted part of the wire 3 is divided into an "easy-to-insert" section with connection contacts and a "difficult-to-insert" section without connection contacts. During the process of pushing the wire 3 by using the wire pusher 1 provided in this embodiment, it is correspondingly divided into two stages: pushing the wire 3 as a whole by the wire pusher 1 and pushing the wire 3 by the slider 8 of the push handle 21. Among them, when pushing the wire 3 as a whole by the wire pusher 1, the wire pusher 1 clamps the wire 3 and exposes the head part of the wire 3 from the wire pusher 1. Specifically, the exposed length of the wire 3 can be limited by the alignment tool 2, so as to ensure that the length of the wire 3 pushed into the pulse generator 29 is controllable during the overall pushing process.

[0054] As Figure 1As shown, the alignment tool 2 is provided with a limit groove 11, the front end of the limit groove 11 is closed, and is used to limit the top end of the wire 3. The limit groove 11 on the alignment tool 2 is a semi-open groove, which is convenient for observing the position of the wire 3 extending into the limit groove 11, so as to ensure the accuracy of the length of the wire 3 extending out of the thruster body 4. The limit block 28 on the alignment tool is used in conjunction with the limit groove 11. When installing the wire, especially the wire wound and placed during the first-stage operation, it can prevent the wire from popping out from the opening direction of the U-shaped semi-open groove due to wire rebound. In addition, as an alternative embodiment, the alignment tool 2 can be omitted, and only the wire thruster 1 can be used. When in use, the exposed part of the wire 3 can be restricted by on-site measurement. In this embodiment, the wire can be an electrode wire or an extension wire; among them, the extension wire is a component of the brain pacemaker system and is used to transmit the electrical pulse signal generated by the implantable neurostimulator to the electrode wire.

[0055] As Figure 2 shown, the wire thruster 1 includes: a thruster body 4 and a slider 8 cooperatively connected to the thruster body 4. The slider 8 is at least partially slidably disposed within the thruster body 4. A jaw 9 for clamping the wire 3 is provided on the slider 8. The jaw 9 is slidably disposed within the propulsion chamber 10 of the thruster body 4, and the jaw 9 clamps the wire 3 thereto. The jaw 9 on the slider 8 refers to Figure 15 、 Figure 16 the structure shown.

[0056] As Figure 2 shown, the interior of the thruster body 4 has a propulsion chamber 10 for radially limiting the wire 3, and the wire 3 is adapted to be axially translated and advanced within the propulsion chamber 10. In addition, the jaw 9 of the slider 8 also slides within the propulsion chamber 10, and the length of the jaw 9 of the slider 8 is less than the length of the propulsion chamber 10, so as to ensure that the jaw 9 drives the wire 3 to move; the remaining part of the propulsion chamber 10 can radially limit the wire 3 to ensure that the wire 3 will not bend significantly. In addition, as an alternative embodiment, the slider 8 can also be slidably disposed outside the thruster body 4, and the jaw 9 on the slider 8 can also clamp the wire 3 outside the thruster body 4.

[0057] As Figure 2 shown, the thruster body 4 includes: a lower shell 5 and an upper shell 6 that can be separated, and the propulsion chamber 10 is formed between the upper shell 6 and the lower shell 5. Specifically, as Figure 11 、 Figure 14As shown, the lower case 5 has a lower slideway 15, and the upper case 6 has an upper slideway 14. After the upper slideway 14 and the lower slideway 15 are combined relatively, a complete propulsion cavity 10 is formed. When the lower case 5 and the upper case 6 are opened, it is convenient to load or unload the wire 3. And, preferably, both the upper slideway and the lower slideway can be set to two in parallel, so that two propulsion cavities 10 are formed after the lower case 5 and the upper case 6 are combined, which can be used for the installation of double-channel wires 3. In addition, as an alternative implementation, the above channels can also be single-channel or other multi-channels to meet the actual use needs.

[0058] As Figure 3 , Figure 11 , Figure 14 and Figure 19 shown, the rotational connection between the upper case 6 and the lower case 5 does not require a third part and is rotatably connected through a rotating shaft 7 on the body of the upper case 6; specifically, at least two groups of first structures are provided on one side edge of the upper case 6, and each group of the first structures includes a first connecting plate or two first connecting plates arranged in parallel at intervals. The first connecting plate is perpendicular to one side edge of the upper case 6, and a rotating shaft 7 extending coaxially toward both sides of the group of first structures is provided on the first connecting plate. At least two groups of second structures matching the at least two groups of first structures are provided on the lower case 5. Each group of the second structures includes two second connecting plates arranged in parallel at intervals. The second connecting plate is perpendicular to one side edge of the upper case 6, and coaxial insertion holes for inserting the rotating shaft 7 are respectively provided on the second connecting plates, so that after the rotating shaft 7 is inserted into the insertion holes, the upper case 6 and the lower case 5 can rotate along the axial direction of the rotating shaft 7. At the same time, grooves for the rotating shaft 7 to be snapped into are respectively provided on the two second connecting plates, and the rotating shaft 7 is snapped into the grooves, so as to facilitate the interlocking connection between the upper case 6 and the lower case 5. Preferably, each group of second structures includes two of the grooves. The grooves are respectively arranged at the inner outer corners of the two second connecting plates in a staggered manner, and the openings of the grooves face the plane parallel to one side surface of the upper case 6 and have an angle difference of 180°. On the side edges of the lower case 5 and the upper case 6 far from the rotating shaft 7, that is, on the other side edge opposite to the above-mentioned one side edge, turning wings 12 are respectively provided in a staggered manner. During operation, by respectively pulling the two turning wings 12 with the thumb and the index finger, the lower case 5 and the upper case 6 can be conveniently opened, so that the wire 3 is accommodated inside the propeller body 4.

[0059] As Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, inside the thruster body 4, the jaws 9 of the slider 8 are slidably received within the propulsion chamber 10, and the slider 8 can slide within the thruster body 4 along the propulsion chamber 10. Moreover, after connecting the alignment tool 2 to the thruster body 4, the limiting groove 11 on the alignment tool 2 is opposite to the propulsion chamber 10 of the thruster body 4.

[0060] As Figure 10 , Figure 11 , Figure 13 As shown, on both sides and in the middle of the propulsion chamber 10 within the thruster body 4, there are respectively provided the sliding grooves 13 for restricting the sliding path of the slider 8. The lower housing 5 has a positioning groove 16 facing the upper housing 6, and the positioning groove 16 is used to cooperate with the positioning boss 17 on the upper housing 6. As Figure 4 , Figure 10 , Figure 12 shown, between the slider 8 and the sliding groove 13 of the thruster body 4, at least at one end away from the alignment tool 2, there is a limiting structure for limiting the slider 8. When the slider 8 is slid to the end away from the alignment tool 2, it can be temporarily restricted on this limiting structure, so as to ensure that the position of the slider 8 will not move randomly when the operator is operating. In this embodiment, limiting structures for limiting the slider 8 are provided at both ends of the slider 8 and the sliding groove 13. Specifically, the limiting structure includes: clamping grooves 18 provided on both sides of the slider 8 and clamping buckles 19 provided on the sliding groove 13 respectively for cooperating with the clamping grooves 18. When the slider 8 is translated and advanced within the sliding groove 13 to reach the frontmost or rearmost end, through the cooperation of the clamping buckles 19 and the clamping grooves 18, the slider 8 is temporarily clamped, thus facilitating the operator to perform the next operation and preventing the slider 8 from sliding randomly.

[0061] As Figure 11 , Figure 13 shown, the upper housing 6 has a positioning boss 17 for inserting into the positioning groove 16. When closing the cover, the positioning boss 17 is inserted into the positioning groove 16 to ensure the fitting of the lower housing 5 and the upper housing 6 when closing the cover.

[0062] As Figure 15 , Figure 16As shown, the slider 8 is connected to a push rod 20, one end of which extends out of the propeller body 4, and the end of the push rod 20 is connected to a push handle 21, and the handle surface of the push handle 21 is provided with anti-slip grooves. When the slider 8 is operated, the slider 8 can be driven to slide in the propeller body 4 by pushing the handle surface of the push handle 21. As a preferred embodiment, the slider 8, the push rod 20 and the push handle 21 can be used as an integrally formed structure. In addition, as a preferred embodiment, the push rod 20 is set as a stable three-rod structure. The push handle 21 is provided with a support groove 22, the center line of which is parallel to the axis of the propulsion cavity 10 of the propeller body 4, and the support groove 22 is suitable for supporting the wire 3 extending out of the propeller body 4.

[0063] like Figure 17 , Figure 18 As shown, the alignment tool 2 has a socket 23, and the thruster body 4 has a protruding plate 24 that cooperates with the socket 23. The thruster body 4 and the alignment tool 2 are snap-connected by inserting the protruding plate 24 into the socket 23. In addition, as a preferred embodiment, the cross-section of the protruding plate 24 is a U-shaped structure, so as to improve the accuracy of the connection between the alignment tool 2 and the thruster body 4. In addition, the protruding plate 24 has an inwardly retracted neck 25, and the socket 23 has a convex rib 26 that snaps with the neck 25. Through the cooperation of the convex rib 26 and the neck 25, the alignment tool 2 and the thruster body 4 can be snap-connected. In addition, as a preferred embodiment, Figure 20 As shown, the socket 23 has a cover plate 27 extending inward, and the side edges of the protruding plate 24 are respectively abutted against the lower surface of the cover plate 27, thereby further improving the connection accuracy between the alignment tool 2 and the thruster body 4. A limit block 28 is provided at the upper front end of the limit groove 11 to limit the wire from escaping from the U-shaped opening direction of the limit groove 11, thereby improving the convenience and reliability of installing the wire.

[0064] like Figures 19 - 25 FIG. 2 is a schematic diagram showing the operation of advancing the guide wire 3 by using the guide wire advancer assembly of this embodiment. Specifically, Figure 19 As shown, first, dock the thruster body 4 and the alignment tool 2 so that the thrust cavity 10 of the thruster body 4 and the limit groove 11 of the alignment tool 2 are opposite to each other; then, pull the slider 8 on the thruster body 4 outward to the rear end, rotate the upper shell 6 to open, and place the wire 3 in the thrust cavity 10 of the thruster body 4, the jaws 9 of the slider 8 and the limit groove 11 of the alignment tool 2, and ensure that the end of the wire 3 with the connection contact segment is aligned and flush with the front end surface of the limit groove 11 of the alignment tool 2. Figure 20 As shown, the upper shell 6 of the propeller body 4 is then rotated downward to engage with the lower shell 5.Figure 21 , Figure 22 As shown, the alignment tool 2 is removed from the thruster body 4, and part of the wire 3 is exposed from the front end of the thruster body 4. The exposed part of the wire 3 is pushed into the top cover of the pulse generator 29 through the thruster body 4. As Figure 23 shown, inside the pulse generator 29, the total distance allowed for the wire 3 to be inserted is d. After the part of the wire 3 exposed from the front end of the thruster body 4 is inserted into the top cover of the pulse generator 29 as a whole, the distance that the wire 3 is inserted into the pulse generator 29 is d1. At this time, the remaining distance allowed for the wire 3 to be inserted into the pulse generator 29 is d2. At this time, the distance allowed for the slider 8 to move forward in the thruster body 4 is also d2. In this way, after the wire 3 is further pushed forward by the slider 8, the wire 3 can accurately enter the pulse generator 29 to ensure that the wire 3 is pushed in place inside the pulse generator 29. As Figure 26 shown, by pushing the push handle 21 forward, the slider 8 drives the wire 3 to be further inserted into the pulse generator 29. As Figure 27 shown, the upper shell 6 of the thruster body 4 is rotated and opened, and the wire 3 is separated from the thruster body 4 in the radial direction to prevent the wire 3 from moving axially and ensure the accuracy of the position of the wire 3 inside the pulse generator 29.

[0065] In addition, as an alternative embodiment, as Figure 26 shown, the rotating shaft 7 is a separate part, and a torsion spring 30 is arranged on the rotating shaft 7. The torsion spring 30 has an elastic force for driving the upper shell 6 and the lower shell 5 to open or close. Specifically, in this embodiment, the torsion spring 30 has an elastic force for driving the upper shell 6 and the lower shell 5 to close. An opening structure is also arranged on the upper shell 6 and the lower shell 5, which can specifically be the clamping handle 31 as Figure 26 shown, or other conventional structures. In addition, as Figure 26 shown, the wire thruster provided in this embodiment has partial sliders inside the upper shell 6 and the lower shell 5 respectively. An upper slider is arranged inside the upper shell 6, and a protrusion or groove is arranged on the upper slider. A lower slider 34 is arranged inside the lower shell 5, and a groove or protrusion corresponding to the protrusion or groove of the upper slider is arranged on the lower slider 34. When the upper shell 6 and the lower shell 5 are buckled, the upper slider inside the upper shell 6 and the lower slider 34 inside the lower shell 5 are inserted and connected to each other. Thus, through the pushing block 35 connected to the upper slider on the upper shell 6, the combination of the upper slider and the lower slider can be synchronously driven. Among them, the connection between the pushing block 35 and the upper slider can be a direct connection, or in order to improve the accuracy of pushing, a structure of a gear and a rack can be adopted for connection. In this embodiment, the torsion spring 30 can more conveniently maintain the clamping state of the thruster on the wire 3; through the setting of the master and slave sliders, the pushing operation is arranged on the upper shell 6, which can be more convenient for the operator to operate with one hand.

[0066] As another alternative embodiment, as Figure 27 shown, the wire pusher provided in this embodiment is provided with a latch 32 on the other side of the upper housing 6 and the lower housing 5 away from the rotating shaft 7. After the upper housing 6 and the lower housing 5 are buckled, they are locked and connected through the latch 32. In addition, the wire pusher of this embodiment also has partial sliders in the upper housing 6 and the lower housing 5 respectively. When the upper housing 6 and the lower housing 5 are buckled, the upper slider in the upper housing 6 and the lower slider 34 in the lower housing 5 approach each other to squeeze the wire. On the outer side of the pusher body, two push handles are arranged in parallel. Among them, the first push handle 36 is connected to the upper slider, the second push handle 37 is connected to the lower slider, and the first push handle 36 and the second push handle 37 have flush handle surfaces. By simultaneously pushing the two handle surfaces, the upper slider and the lower slider can be driven to move synchronously. In this embodiment, through the design of the latch 32 and the upper and lower push handles, effective clamping of the wire can be formed, and it is not easy for the pusher to open and drop the wire.

[0067] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the embodiments. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the embodiments here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A wire pusher assembly, characterized in that, comprising: A pusher body (4) having a pusher cavity (10) inside for radially limiting a wire (3), and having an interlocking shaft connection structure on the side. The wire (3) is adapted to be translated axially within the pusher cavity (10). The pusher body (4) includes a lower shell (5) and an upper shell (6) that can be separated. The interlocking shaft connection structure includes a shaft (7), and the shaft (7) is fixedly connected to the body of the upper shell (6); A slider (8) cooperatively connected with the pusher body (4). The slider (8) is adapted to slide on the pusher body (4) in a direction parallel to the axis of the pusher cavity (10). The slider (8) has a connection structure for clamping the wire (3). The pusher body (4) has a chute (13) for limiting the sliding path of the slider (8); A push rod (20) fixedly connected to the slider (8) and a push handle (21). The push rod is a stable three-rod structure for stably pushing the slider (8) along the direction of the chute (13); An alignment tool (2). The pusher body (4) and the alignment tool (2) are detachably connected. The alignment tool (2) has a limit groove (11) for accommodating the wire (3) and a limit block (28) for preventing the wire (3) from coming out. The rear end of the alignment tool (2) is adapted to be connected to the pusher body (4). After connection, the limit groove (11) on the alignment tool (2) is opposite to the pusher cavity (10) inside the pusher body (4).

2. The wire pusher assembly according to claim 1, characterized in that, The alignment tool (2) has a socket (23), and the pusher body (4) has an extension plate (24) cooperating with the socket (23). The pusher body (4) and the alignment tool (2) are snap-connected by inserting the extension plate (24) into the socket (23).

3. The wire pusher assembly according to claim 2, characterized in that, The cross-section of the extension plate (24) is a U-shaped structure. The extension plate (24) has a neck (25) indented inward, and the socket (23) has a rib (26) for snap-fitting with the neck (25).

4. The wire pusher assembly according to claim 3, characterized in that, The socket (23) has a cover plate (27) extending inward, and the sides of the extension plate (24) are respectively abutted against the lower surface of the cover plate (27).

5. The wire pusher assembly according to claim 1, characterized in that, The limit groove (11) on the alignment tool (2) is a semi-open groove.

6. The wire pusher assembly according to claim 1, characterized in that, The front end of the limit groove (11) on the alignment tool (2) is closed for alignment during wire (3) installation. A limit block (28) is provided at the upper part of the front end of the limit groove (11) for preventing the wire (3) from coming out from the opening direction of the limit groove (11).

7. The wire thruster assembly according to claim 1, characterized in that, the thruster body (4) includes: a lower housing (5) and an upper housing (6) that can be separated, and a propulsion cavity (10) is formed between the upper slideway (14) of the upper housing (6) and the lower slideway (15) of the lower housing (5).

8. The wire thruster assembly according to claim 7, characterized in that, the interlocking shaft connection structure includes: at least two sets of first structures on one side edge of the upper housing (6) and at least two sets of second structures on the lower housing (5) that cooperate with the at least two sets of first structures; each set of the first structures includes a first connecting plate or two first connecting plates arranged in parallel at intervals, and a rotating shaft (7) coaxially extending toward both sides of the set of first structures is provided on the first connecting plate; each set of the second structures includes two second connecting plates arranged in parallel at intervals, and coaxial insertion holes for inserting the rotating shaft (7) are respectively provided on the second connecting plates, so that after the rotating shaft (7) is inserted into the insertion holes, the upper housing (6) and the lower housing (5) can rotate along the axial direction of the rotating shaft (7).

9. The wire thruster assembly according to claim 7, characterized in that, the lower housing (5) and the upper housing (6) respectively have deflected turning wings (12) arranged in a staggered manner on the side edges away from the rotating shaft (7).

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