Force transfer structure of continuous clip applier

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a force transmission structure of a continuous clip applier. The utility model provides a continuous clip applier force transmission structure which aims at solving the problem that in the prior art, a novel clip applier structure needs to be designed urgently to further reduce the diameter of an outer rod, and comprises a control part, a clip head part, a ligation clip conveying channel, a clip pushing force transmission mechanism and a clip head force transmission mechanism. The ligation clamp conveying channel adopts the design that a hollow flat special-shaped steel framework serves as a core framework, the clamp pushing force transmission mechanism and the clamp head force transmission mechanism are combined and installed in the mode of being tightly attached to or embedded into the ligation clamp conveying channel, and meanwhile connection of the force transmission mechanisms, the clamp conveying mechanism and the clamp head part is integrated through the U-shaped fixing inserting groove. The space utilization rate is improved, and the effect that the structural size is smaller under the same function is achieved. Meanwhile, flat steel wires are adopted as components such as the clamp push rod and the like, the components are connected in an inserting mode, a matched and applicable new force transmission scheme is developed, and the size is further reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a force transmission structure of a continuous firing clip applicator. Background Art

[0002] Most of the existing continuous firing ligating clip applicators adopt sheet metal parts with relatively regular shapes as the skeleton rods for accommodating the clip pushing mechanism and the force transmission structure, etc., and adopt general steel wires as the force transmission device, which occupies a large volume. Therefore, a very large outer rod is required for socket assembly, and it cannot meet the sizes of clip applicators required for some more minimally invasive surgeries. Therefore, it is urgent to design a new clip applicator structure to further reduce the diameter of the outer rod.

[0003] For example, the Chinese invention patent discloses a continuous firing clip applicator [Application No.: CN202111376487.X]. This invention provides a continuous firing clip applicator, including a clip applicator housing, a clamp head push rod connected to the clip applicator housing and a clamp head provided at one end of the clamp head push rod. Moving the clamp head push rod can drive the clamp head to open or close. A cartridge mounting structure is provided on the clip applicator housing, and a first feeding mechanism and a second feeding mechanism are also provided. The driving handle pushes the pushing structure into the first feeding space through the first feeding mechanism, and the driving handle pushes the pushing structure into the second feeding space through the second feeding mechanism. In this invention, when the tissue clip is pushed out, the amplitude of the automatic springing open action of the tissue clip can be effectively reduced, and then it is slowly clamped to complete closure by using the second feeding mechanism. Therefore, it is more suitable for tissue clips that will automatically spring open when ejected.

[0004] Although this invention improves the feeding efficiency of the tissue clip, it still does not solve the problem that minimally invasive surgeries require smaller sizes of clip applicators. Summary of the Invention

[0005] The purpose of the utility model is to solve the above problems and provide a force transmission structure of a continuous firing clip applicator.

[0006] A force transmission structure of a continuous firing clip applicator provided by the utility model includes a control part, a clamp head part, a ligating clip conveying channel, a clip pushing force transmission mechanism and a clamp head force transmission mechanism. The ligating clip conveying channel is connected to the control part through the clip pushing force transmission mechanism, and the clamp head part is connected to the control part through the clamp head force transmission mechanism. The force transmission structure of a continuous firing clip applicator provided by the utility model further includes a U-shaped fixed slot, and there is a groove at the connecting end of the fixed slot. The ligating clip conveying channel is a hollow flat-shaped special-shaped steel skeleton with a single-sided open clip outlet at one end. The ligating clip conveying channel is inserted into the groove of the fixed slot, and one side of the ligating clip conveying channel is attached to the fixed clamp head force transmission mechanism, and the other side is attached to the fixed clip pushing force transmission mechanism.

[0007] Preferably, the clamp head includes a clamp strip portion and a pressing head portion, the clamp strip portions are respectively connected to one side of the pressing head portion, the clamp strip portion has a convex column protruding outward, the clamp head force transmission mechanism includes a sliding sleeve with a sliding groove, the sliding sleeve is slidably connected to the fixed slot, the convex column is inserted into the sliding groove, and the two sides of the clamp strip portion are squeezed by the sliding sleeve 5a as the relative position with the sliding sleeve changes, driving the pressing head portion to open and close.

[0008] Preferably, the clamping strip parts gradually move closer together in a direction away from the pressure head part, and the sliding sleeve is provided with a pressing groove, and the sliding sleeve is pushed so that the pressing groove presses the clamping strip parts down to close the pressure head part, and vice versa to release the clamping strip parts to open the pressure head part.

[0009] Preferably, the force transmission mechanism of the clamp head further comprises a clamp head push rod, the clamp head push rod has a flat steel wire structure, and the sliding sleeve is plugged into the clamp head push rod by a plug-in slot on the side close to the clamp head push rod. The clamp head push rod is pushed to push the sliding sleeve to squeeze the clamp strip part to close the pressure head part, and vice versa, due to the anti-deformation ability of the pressure head part, when the clamp head push rod has no thrust, the sliding sleeve is rebounded by the component force of the anti-deformation restoring force, and the pressure head part of the clamp head part opens.

[0010] Preferably, the ligation clamp delivery channel is provided with an insertion hole, the outside of the ligation clamp delivery channel is inserted into a flat fixing plate through the insertion hole to form a flat groove, and the clamp head push rod is fitted and fixed in the flat groove.

[0011] Preferably, the push-clip force transmission mechanism comprises a clip push rod, the ligation clip delivery channel has a push-mouth slot, and the protrusion is inserted into the push-mouth slot to advance the ligation clip for delivery.

[0012] Preferably, the control part comprises a special-shaped clamp head push rod with a flat slot on the head and a special-shaped clip push rod with a flat slot on the head, and the ligation clip delivery channel comprises a junction part and a special-shaped clamp head push rod in the control part, the clamp head push rod is plugged with the special-shaped clamp head push rod in the junction part, and the clip push rod is plugged with the special-shaped clip push rod.

[0013] Preferably, the control part comprises a rotating fixed sleeve and a large rotating wheel, the rotating fixed sleeve is arranged on the ligation clip conveying channel, and the large rotating wheel is fixedly connected to the rotating fixed sleeve.

[0014] Preferably, the ligation clamp delivery channel is welded with a flat raised positioning strip, and the clamp push rod passes through the raised strips in sequence and is fixed to the side wall of the ligation clamp delivery channel.

[0015] As a conventional arrangement, a sleeve, i.e., an outer rod, is disposed outside the fixing slot, and all components between the operating portion and the clamp head are located inside the sleeve.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. The utility model uses a special-shaped steel frame as a ligation clip delivery channel, and the force transmission structure of the clamp head and the push-clamp force transmission mechanism adopt flat steel wire plugging and other methods, which greatly improves the space utilization rate. On the premise of maintaining the existing technical functions, the outer rod diameter is greatly reduced, and it is suitable for application on smaller specifications of clamp applicators. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a partial exploded view of the utility model;

[0020] Figure 3 It is a partial exploded view of the utility model;

[0021] Figure 4 for Figure 1 A partial exploded view from another perspective;

[0022] Figure 5 This is a schematic diagram of the ligation clip delivery channel structure;

[0023] Figure 6 It is an exploded view of part of the structure of the utility model;

[0024] Figure 7 It is an exploded view of part of the structure of the utility model;

[0025] In the figure: operating part 1, clamp head part 2, ligation clip delivery channel 3, push clamp force transmission mechanism 4, clamp head force transmission mechanism 5, fixed slot 6, flat fixed plate 7, special-shaped clamp head push rod 1a, special-shaped clamp push rod 1b, clamp strip part 2a, convex column 2a1, pressing head part 2b, clamp outlet 3a, plug hole 3b, push outlet slot 3c, junction part 3d, clamp push rod 4a, protruding part 4a1, sliding sleeve 5a, sliding groove 5a1, pressing groove 5a2, plug-in empty groove 5a3, clamp head push rod 5b, groove 6a, flat groove 7a, rotating fixed sleeve 8, large rotating wheel 9, flat raised positioning strip 10, sleeve 11. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] The utility model is a force transmission structure of a continuous clamp applicator. Figure 1 , 3, as shown in FIGS. 4 and 5, it includes a control part 1, a clamp head part 2, a ligating clip conveying channel 3, a clip pushing force transmission mechanism 4 and a clamp head force transmission mechanism 5. The ligating clip conveying channel 3 is connected to the control part 1 through the clip pushing force transmission mechanism 4, and the clamp head part 2 is connected to the control part 1 through the clamp head force transmission mechanism 5. It is characterized in that: it further includes a U-shaped fixed slot 6. The connecting end of the fixed slot 6 has a groove 6a. The ligating clip conveying channel 3 is a hollow flat special-shaped steel skeleton with a single-sided open clip outlet 3a at one end. The ligating clip conveying channel 3 is inserted into the groove 6a of the fixed slot 6. One side of the ligating clip conveying channel 3 is attached to the fixed clamp head force transmission mechanism 5, and the other side is attached to the fixed clip pushing force transmission mechanism 4.

[0028] In the present utility model, during use, the groove 6a in the U-shaped fixed slot 6 is connected to the ligating clip conveying channel 3 and has a clip outlet, that is, the clip outlet 3a, at the other end. By adopting the design of a hollow flat special-shaped steel skeleton for the ligating clip conveying channel 3 as the core skeleton connecting various parts, the clamp head force transmission mechanism 5 and the clip pushing force transmission mechanism 4 can be closely attached to the ligating clip conveying channel 3 and partially inserted into its internal space, greatly saving the occupied space.

[0029] Preferably, as Figure 2 , 3 shown, the clamp head part 2 includes a clip bar part 2a and a pressing head part 2b. The clip bar part 2a is respectively connected to one side of the pressing head part 2b. The clip bar part 2a has a protruding column 2a1 protruding outward. The clamp head force transmission mechanism 5 includes a sliding sleeve 5a with a sliding groove 5a1. The protruding column 2a1 is inserted into the sliding groove 5a1 to play a role in limiting the sliding sleeve 5a. The sliding sleeve 5a is slidably connected to the fixed slot 6 for movement. Both sides of the clip bar part 2a are squeezed at different positions by the sliding sleeve 5a as the relative position between the sliding sleeve 5a changes, thereby driving the pressing head part 2b to open and close.

[0030] Preferably, as Figure 4 shown, the clip bar part 2a gradually converges in the direction away from the pressing head part 2b. The sliding sleeve is provided with a pressing groove 5a2. Pushing the sliding sleeve 5a makes the pressing groove 5a2 press down on the clip bar part 2a to close the pressing head part 2b, and conversely, releasing it makes the pressing head part 2b open.

[0031] As a preference, as Figure 4 shown, the clamp head force transmission mechanism 5 further includes a clamp head push rod 5b. The clamp head push rod 5b is a flat steel wire structure. One side of the sliding sleeve 5a close to the clamp head push rod b is inserted into the clamp head push rod 5b through a plugging empty groove 5a3. Pushing the clamp head push rod 5b to push the sliding sleeve 5a to squeeze the clip bar part 2a to close the pressing head part 2b. Conversely, because of the anti-deformation ability of the pressing head part 2b, when there is no thrust on the clamp head push rod 5b, the sliding sleeve 5a is bounced back by the component force of the anti-deformation restoring force, and the pressing head part 2b of the clamp head part 2 opens.

[0032] As a preference, as Figure 2 and Figure 5 As shown, the ligation clamp delivery channel 3 is provided with an insertion hole 3b, and a flat fixing plate 7 is inserted through the insertion hole 3b outside the ligation clamp delivery channel 3 to form a flat groove 7a, and the clamp head push rod 5b is fitted and fixed in the flat groove 7a.

[0033] Preferably, Figure 4 and Figure 7 As shown, the clamp pushing force transmission mechanism 4 includes a clamp pushing rod 4a, and the ligation clamp delivery channel 3 has a pushing slot 3c. The clamp pushing rod 4a is inserted into the pushing slot 3c through the protrusion 4a1 to push the ligation clamp for delivery.

[0034] Preferably, Figure 5 , 6 As shown, the operating part 1 has a special-shaped clamp head push rod 1a with a flat slot on the head and a special-shaped clip push rod 1b with a flat slot on the head, the ligation clip delivery channel 3 includes a junction 3d in the operating part 1, the special-shaped clamp head push rod 1a, the clamp head push rod 5b is plugged with the special-shaped clamp head push rod 1a in the junction 3d, and the clip push rod 4a is plugged with the special-shaped clip push rod 1b.

[0035] It is easy to imagine that, except for the pliers head push rod 5b, the above-mentioned special-shaped pliers head push rod 1a, special-shaped clamp push rod 1b, and clamp push rod 4a can all adopt flat steel wire to further save space.

[0036] By plugging in, the space cost of power transmission of different components is reduced.

[0037] Preferably, Figure 6 As shown, the control part 1 includes a rotating fixed sleeve 8 and a large rotating wheel 9. The rotating fixed sleeve 8 is arranged on the ligation clip delivery channel 3. The large rotating wheel 9 is fixedly connected to the rotating fixed sleeve 8. Rotating the large rotating wheel 9 can make the rotating fixed sleeve 8 drive the ligation clip delivery channel 3 to rotate, thereby driving the clamp head 2 to rotate.

[0038] As a preference, Figure 4 As shown, the ligation clamp conveying channel 3 is welded with a flat protruding positioning strip 10, and the clamp push rod 4a passes through the protrusions in sequence and is fixed to the side wall of the ligation clamp conveying channel 3.

[0039] As a common setting, Figure 2 As shown, a sleeve 11 is disposed outside the fixing slot 6 , and all components between the operating part 1 and the clamp head 2 are located inside the sleeve 11 .

[0040] The working principle of this embodiment is as follows: The ligation clip delivery channel 3 adopts a design with a hollow flat special-shaped steel skeleton as the core skeleton to undertake the function of integrating each force transmission structure. The clip pushing force transmission mechanism 4 and the force transmission mechanism of the forceps head 5 are combined and installed by being closely attached to or embedded in the ligation clip delivery channel 3. At the same time, each force transmission mechanism is integrated through the U-shaped fixing slot 6. The connection between the clip delivery mechanism and the forceps head part 2, such as the sliding sleeve 5a for controlling the opening and closing of the forceps head part 2, is embedded in the fixing slot 6 for sliding connection, and at the same time, the space inside the clip outlet 3a is utilized for movement, making efficient use of the internal space. Further, the long-distance force transmission structures of various force transmission mechanisms, such as the special-shaped forceps head push rod 1a, special-shaped clip push rod 1b, clip push rod 4a, and forceps head push rod 5b, all adopt a form of mutual insertion of flat special-shaped steel wires to change the old transmission connection, and a new transmission scheme such as using the sliding sleeve 5a of the new structure to control the opening and closing of the forceps head 1 is used, which can further reduce the outer diameter of the matching outer rod (i.e., the sleeve 11 in this specification).

[0041] For other functional implementation schemes not specifically introduced in this specification, please refer to the invention patent with the application number CN202111376487.X.

[0042] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0043] Although terms such as the control part 1, the forceps head part 2, the ligation clip delivery channel 3, the clip pushing force transmission mechanism 4, the force transmission mechanism of the forceps head 5, the fixing slot 6, the flat fixing plate 7, the special-shaped forceps head push rod 1a, the special-shaped clip push rod 1b, the clip strip part 2a, the convex column 2a1, the pressing head part 2b, the clip outlet 3a, the jack 3b, the push port slot 3c, the交接部3d, the clip push rod 4a, the protruding part 4a1, the sliding sleeve 5a, the sliding groove 5a1, the pressing groove 5a2, the insertion empty slot 5a3, the forceps head push rod 5b, the groove 6a, the flat groove 7a, the rotary fixing sleeve 8, the large runner 9, the flat convex positioning strip 10, the sleeve 11 are used more frequently in this article, the possibility of using other terms is not excluded. Using these terms is only for more convenient description and explanation of the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A force transmission structure for a continuous-fire clip applicator, comprising a control unit (1), a clamp head (2), a ligation clip delivery channel (3), a clamp push force transmission mechanism (4) and a clamp head force transmission mechanism (5), wherein the ligation clip delivery channel (3) is connected to the control unit (1) via the clamp push force transmission mechanism (4), and the clamp head (2) is connected to the control unit (1) via the clamp head force transmission mechanism (5); characterized in that : It also includes a U-shaped fixed slot (6). The connecting end of the fixed slot (6) has a groove (6a). The ligature clip conveying channel (3) is a hollow flat-shaped special-shaped steel skeleton with a single-sided open clip outlet (3a) at one end. The ligature clip conveying channel (3) is inserted into the groove (6a) of the fixed slot (6). One side of the ligature clip conveying channel (3) is attached to the fixed force transmission mechanism of the clamping head (5), and the other side is attached to the fixed clip pushing force transmission mechanism (4).

2. The force transmission structure of the continuous clip applier according to claim 1, characterized in that: The clamping head part (2) includes a clip bar part (2a) and a pressing head part (2b). The clip bar part (2a) is respectively connected to one side of the pressing head part (2b). The clip bar part (2a) has a protruding column (2a1) protruding outward. The clamping head force transmission mechanism (5) includes a sliding sleeve (5a) with a sliding groove (5a1). The sliding sleeve (5a) is slidably connected to the fixed slot (6). The protruding column (2a1) is inserted into the sliding groove (5a1). Both sides of the clip bar part (2a) are driven by the sliding sleeve (5a) to squeeze the pressing head part (2b) to perform an opening and closing movement as the relative position with the sliding sleeve (5a) changes.

3. The force transmission structure of the continuous clip applier according to claim 2, characterized in that: The clip bar part (2a) gradually approaches along the direction away from the pressing head part (2b). The sliding sleeve is provided with a pressing groove (5a2). Pushing the pressing groove (5a2) of the sliding sleeve (5a) downward presses the clip bar part (2a) to close the pressing head part (2b), and vice versa to release to open the pressing head part (2b).

4. The force transmission structure of the continuous clip applier according to claim 2, characterized in that: The clamping head force transmission mechanism (5) further includes a clamping head push rod (5b). The clamping head push rod (5b) is a flat steel wire structure. One side of the sliding sleeve (5a) close to the clamping head push rod (5b) is inserted into the clamping head push rod (5b) through a socket groove (5a3).

5. The force transmission structure of the continuous clip applier according to claim 4, characterized in that: The ligature clip conveying channel (3) is provided with a socket hole (3b). A flat fixing plate (7) is inserted into the ligature clip conveying channel (3) through the socket hole (3b) to form a flat groove (7a). The clamping head push rod (5b) is fixedly attached to the flat groove (7a).

6. The force transmission structure of the continuous clip applier according to claim 1, characterized in that: The clip pushing force transmission mechanism (4) includes a clip push rod (4a). The ligature clip conveying channel (3) has a push port slot (3c). The clip push rod (4a) is inserted into the push port slot (3c) through a protruding part (4a1) to push the ligature clip for conveying.

7. The force transmission structure of the continuous clip applier according to claim 5, characterized in that: Inside the control part (1), there is a special-shaped clamping head push rod (1a) with a flat slot at the head and a special-shaped clip push rod (1b) with a flat slot at the head. The ligature clip conveying channel (3) includes a交接部 (3d) inside the control part (1), the special-shaped clamping head push rod (1a). The clamping head push rod (5b) is inserted into the special-shaped clamping head push rod (1a) at the交接部 (3d), and the clip push rod (4a) is inserted into the special-shaped clip push rod (1b).

8. The force transmission structure of the continuous clip applier according to claim 4, characterized in that: The control part (1) includes a rotating fixed sleeve (8) and a large rotating wheel (9). The rotating fixed sleeve (8) is arranged on the ligature clip conveying channel (3), and the large rotating wheel (9) is fixedly connected to the rotating fixed sleeve (8).

9. The force transmission structure of the continuous clip applier according to claim 6, characterized in that: The ligature clip conveying channel (3) is welded with a flat protruding positioning strip (10). The clip push rod (4a) passes through the protrusion in sequence and is fixed to the side wall of the ligature clip conveying channel (3).

10. The force transmission structure of the continuous clip applier according to claim 6, characterized in that: The fixed slot (6) is provided with a sleeve (11) outside, and all components between the control part (1) and the clamp head (2) are located inside the sleeve.

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