Support structure between inner and outer sheaths of surgical forceps

Abstract

The utility model discloses a kind of support structures between inner and outer sheaths of surgical forceps, to provide a kind of support structures between inner and outer sheaths of surgical forceps, which can realize relative rotation between inner and outer sheaths. It includes: outer tube;Inner tube, the inner tube is placed in outer tube;Support assembly, the inner side of the support assembly is connected with inner tube, the outer side of the support assembly is rotatably connected with the inside of outer tube, the inner tube is detachably connected with outer tube by support assembly;Screw component, the screw component is installed on outer tube, and one end of the screw component is connected with support assembly. The utility model has the beneficial effects that relative rotation between inner and outer sheaths can be realized, support between inner tube and outer tube can be carried out, the position of inner tube can be limited, support assembly can be rotated, the stability of rotating rod can be guaranteed, and rotating ring is facilitated to rotate.

Description

Technical Field

[0001] This utility model relates to the technical field of surgical forceps, and in particular to a support structure between the inner and outer sheaths of surgical forceps. Background Technology

[0002] In the field of minimally invasive surgery, surgical forceps are crucial surgical instruments, and their design and performance directly affect the success of the surgery and the patient's recovery. Existing surgical forceps typically have complex support structures between the inner and outer sheaths, resulting in high manufacturing costs and numerous problems in practical use. Firstly, existing support structures are not flexible enough in terms of adjustment, and the relative rotation between the inner and outer sheaths is not smooth enough.

[0003] Chinese Patent Publication No. CN203029334U, published on July 3, 2013, discloses a sheath tube for abdominal surgical forceps, comprising a hollow insulating tube, an outer tube, and an outer tube connector, as well as a hollow spring tube assembly with a joint buckle. The spring tube assembly is characterized by having a spring tube connector, a first spring, a second spring, a third spring, a first spring piece, a second spring piece, and a spring piece connector. The spring tube connector is welded to the first spring piece, the first and third spring pieces are respectively welded to the first spring piece, the first spring piece and the spring piece connector are respectively welded to the second spring piece, the outer tube is bonded to the insulating tube, and the other end of the outer tube is welded to the third spring piece. The drawback of this invention is the lack of a rotating structure between the inner and outer sheaths of the surgical forceps, which significantly limits the flexibility of the forceps. Utility Model Content

[0004] The present invention aims to overcome the shortcomings of existing surgical forceps, which lack a rotating structure between the inner and outer sheaths and greatly limit the flexibility of the surgical forceps. It provides a support structure between the inner and outer sheaths of surgical forceps that allows relative rotation between the inner and outer sheaths.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A support structure between the inner and outer sheaths of a surgical forceps, comprising: outer tube; Inner tube, wherein the inner tube is placed inside the outer tube; A support assembly, wherein the inner side of the support assembly is connected to the inner tube, the outer side of the support assembly is rotatably connected to the inside of the outer tube, and the inner tube is detachably connected to the outer tube through the support assembly; A screwing assembly is mounted on the outer tube and is connected to one end of a support assembly.

[0006] The outer tube and the inner tube are supported by a support assembly, which enables relative rotation between them. The inner tube is installed inside the outer tube by the support assembly, which allows the inner and outer tubes to be separated for individual operation and easy assembly / disassembly. After installation, the support assembly can be rotated by a screwing component installed on the outer tube, which in turn rotates the inner tube, achieving relative rotation between the inner and outer tubes. This achieves the goal of enabling relative rotation between the inner and outer sheaths.

[0007] Preferably, the support assembly includes a support plate, an inner ring, and an outer ring. Several support plates are arranged circumferentially, several inner rings are evenly installed on one side of the support plates, and several outer rings are evenly installed on the other side of the support plates. The inner rings are fitted against the outer surface of the inner tube, and the outer rings are fitted against the inner surface of the outer tube. The inner rings are connected to the inner tube, and the outer rings are rotatably connected to the outer tube. The support plate of the support assembly connects the inner and outer rings together, and the inner rings are connected to the inner tube. The support assembly then fixes the inner tube inside the outer tube. Because the support assembly is rotatably connected to the outer tube via the outer rings, this design provides support between the inner and outer tubes.

[0008] Preferably, a limiting ring is installed on the inner side of the outer tube, and the limiting ring contacts the end face of the support plate. A rotating ring is installed on the support plate, and the limiting ring has a rotating groove that matches the rotating ring. When the inner tube is installed inside the outer tube, as the inner tube and support assembly are pushed in, the end of the support assembly fits against the limiting ring installed on the inner wall of the outer tube, limiting the position of the inner tube. Simultaneously, to ensure smooth rotation of the inner tube, the rotating ring installed on the support plate is inserted into the rotating groove of the limiting ring. The smooth rotation process is achieved through the cooperation of the rotating ring and the rotating groove. This design effectively limits the position of the inner tube.

[0009] Preferably, the screwing assembly includes a rotating ring and a rotating rod. The inner side of the rotating ring fits against the outer side of the outer ring. The inner side of the rotating ring is provided with a meshing groove. The bottom surface of the meshing groove is provided with a first rotating groove. One end of the rotating rod is placed in the meshing groove. A first rotating block is installed on the end of the rotating rod placed in the meshing groove. The rotating rod is rotatably connected to the rotating ring through the cooperation of the first rotating block and the first rotating groove. A first crown gear is installed on one side of the meshing groove. A first gear is installed on the rotating rod. The first gear meshes with the first crown gear. The other end of the rotating rod passes through the outer tube and is placed inside the outer tube. A second crown gear is installed on the support assembly. A second gear is installed on the rotating rod. The second gear meshes with the second crown gear. The screwing assembly is mounted on the outer tube to drive the inner tube to rotate. The rotation of the rotating ring on the outer tube drives the rotating rod to rotate. The rotating rod passes through the outer tube and is restricted to its own rotation by the outer tube. The crown gear 1 installed in the meshing groove on the rotating ring meshes with gear 1. Due to the meshing of the two, when the rotating rod rotates around the axis of the outer tube, the meshing of crown gear 1 with gear 1 changes the transmission direction, driving the rotating rod to rotate. The rotating rod is mounted on the rotating ring through the cooperation of rotating block 1 installed at the top and rotating groove 1. When the rotating ring rotates, rotating block 1 moves in rotating groove 1 without affecting the rotation of the rotating ring. The rotation of the rotating rod is transmitted to crown gear 2, which meshes with it, through gear 2, thereby driving the support assembly to rotate, realizing the rotation of the support assembly inside the outer tube. This design allows the support assembly to rotate.

[0010] Preferably, the outer tube is provided with an exit groove, which corresponds to the rotating rod. A rotating block two is installed at one end of the rotating rod that passes through the exit groove, and a rotating groove two is installed on the inner tube. The rotating rod is rotatably connected to the inner tube through the cooperation of the rotating block two and the rotating groove two. In order to realize the disassembly and assembly of the inner tube and the outer tube, the lower end of the rotating rod extends through the exit groove when it enters the outer tube. When installing the screwing assembly, the rotating assembly can move along the exit groove. At the same time, the lower end of the rotating rod is connected to the inner tube through the rotating block two. The cooperation of the rotating block two and the rotating groove two to connect with the inner tube can support the lower end of the rotating rod and ensure the stability of the rotating rod. This design can ensure the stability of the rotating rod.

[0011] Preferably, the rotating ring is equipped with friction blocks, and a plurality of friction blocks are provided in a circumferential arrangement. A retaining ring is provided on the outer surface of the outer tube, and the retaining ring contacts the rotating ring. The uniformly distributed friction blocks on the rotating ring facilitate rotation, while the retaining ring on the outer tube restricts the position of the rotating ring and increases stability during rotation. This design facilitates the rotation of the rotating ring.

[0012] The beneficial effects of this utility model are: it can realize relative rotation between the inner and outer sheaths, can provide support between the inner and outer tubes, can limit the position of the inner tube, can rotate the support assembly, can ensure the stability of the rotating rod, and facilitates the rotation of the rotating ring. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1 Schematic diagram of the inner tube and support components; Figure 3 yes Figure 1 Schematic diagram of the structure of the inner and outer tubes; Figure 4 yes Figure 1 A schematic diagram of the screw-on assembly.

[0014] In the diagram: 1. Outer tube; 11. Limiting ring; 12. Rotating groove; 13. Exit groove; 14. Retaining ring; 2. Inner tube; 21. Rotating groove two; 3. Support assembly; 31. Support plate; 33. Inner ring; 34. Outer ring; 35. Rotating ring; 36. Crown gear two; 4. Twisting assembly; 41. Rotating ring; 411. Friction block; 42. Rotating rod; 43. Meshing groove; 44. Rotating groove one; 45. Rotating block one; 46. Crown gear one; 47. Gear one; 48. Gear two; 49. Rotating block two. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0016] like Figure 1 In this embodiment, a support structure between the inner and outer sheaths of a surgical forceps includes: Outer tube 1; Inner tube 2, which is placed inside outer tube 1; Support component 3, the inner side of support component 3 is connected to inner tube 2, the outer side of support component 3 is rotatably connected to the inside of outer tube 1, and inner tube 2 is detachably connected to outer tube 1 through support component 3; Tightening assembly 4 is installed on outer tube 1 and is connected to one end of support assembly 3.

[0017] The support assembly 3 includes a support plate 31, an inner ring 33, and an outer ring 34. The support plate 31 has several rings distributed circumferentially. The inner ring 33 has several rings evenly installed on one side of the support plate 31. The outer ring 34 has several rings evenly installed on the other side of the support plate 31. The inner ring 33 is attached to the outer side of the inner tube 2, and the outer ring 34 is attached to the inner side of the outer tube 1. The inner ring 33 is connected to the inner tube 2, and the outer ring 34 is rotatably connected to the outer tube 1.

[0018] A limiting ring 11 is installed on the inner side of the outer tube 1. The limiting ring 11 contacts the end face of the support plate 31. A rotating ring 41 is installed on the support plate 31. The limiting ring 11 is provided with a rotating groove 12. The rotating ring 41 matches the rotating groove 12.

[0019] The screwing assembly 4 includes a rotating ring 41 and a rotating rod 35. The inner side of the rotating ring 41 fits against the outer side of the outer ring 34. The inner side of the rotating ring 41 is provided with a meshing groove 43. The bottom surface of the meshing groove 43 is provided with a rotating groove 44. One end of the rotating rod 35 is placed in the meshing groove 43. A rotating block 45 is installed on the end of the rotating rod 35 placed in the meshing groove 43. The rotating rod 35 is rotatably connected to the rotating ring 41 through the cooperation of the rotating block 45 and the rotating groove 44. A crown gear 46 is installed on one side of the meshing groove 43. A gear 47 is installed on the rotating rod 35. The gear 47 meshes with the crown gear 46. The other end of the rotating rod 35 passes through the outer tube 1 and is placed inside the outer tube 1. A crown gear 36 is installed on the support assembly 3. A gear 48 is installed on the rotating rod 35. The gear 48 meshes with the crown gear 36.

[0020] The outer tube 1 is provided with an exit groove 13, which corresponds to the rotating rod 35. A rotating block 49 is installed at one end of the rotating rod 35 that passes through the exit groove 13. A rotating groove 21 is installed on the inner tube 2. The rotating rod 35 is rotatably connected to the inner tube 2 through the cooperation of the rotating block 49 and the rotating groove 21.

[0021] Friction blocks 411 are installed on the rotating ring 41. Several friction blocks 411 are provided and are distributed in a circular pattern. A retaining ring 14 is provided on the outer side of the outer tube 1, and the retaining ring 14 is in contact with the rotating ring 41.

[0022] When installing the inner tube 2 and the outer tube 1, push the inner tube 2 and the support assembly 3 into the outer tube 1. The support assembly 3 moves inside the outer tube 1 until it fits against the limiting ring 11. The rotating ring 41 at one end of the support plate 31 is inserted into the rotating groove 12 of the limiting ring 11 to ensure that the support assembly 3 can carry the inner tube 2 to rotate inside the outer tube 1. The inner ring 33 of the support assembly 3 is connected to the inner tube 2, and the outer ring 34 is rotatably connected to the outer tube 1 to stably support the inner tube 2 inside the outer tube 1.

[0023] During the installation of the inner tube 2, the rotating rod 42 on the inner tube 2 enters the exit groove 13, realizing the rotational connection between the rotating ring 35 and the outer tube 1. Then, under the restriction of the retaining ring 14, the rotating ring 41 is screwed on. When the rotating ring 41 rotates, the rotating rod 41 is restricted within the exit groove 13 and will not rotate with it. Since the upper end of the rotating rod 42 is connected to the rotating ring 41 through the cooperation of the rotating block 45 and the rotating groove 44, and the other end is connected to the inner tube 2 through the cooperation of the rotating block 49 and the rotating groove 21, it is ensured that the rotating rod 42 can only rotate on its own. The rotation of the rotating ring 41 drives the crown gear 46 in the meshing groove 43 to rotate. Through the meshing with the gear 47, the rotating rod 42 rotates. The rotation of the rotating rod 42 drives the gear 48 to rotate. Through the meshing of the gear 48 and the crown gear 36, the support assembly 3 rotates, thereby realizing the rotation of the inner tube 2 within the outer tube 1.

Claims

1. A support structure between the inner and outer sheaths of a surgical forceps, characterized in that, include: Outer tube (1); Inner tube (2), wherein the inner tube (2) is placed inside the outer tube (1); The inner side of the support component (3) is connected to the inner tube (2), and the outer side of the support component (3) is rotatably connected to the inner side of the outer tube (1). The inner tube (2) is detachably connected to the outer tube (1) through the support component (3). A screwing assembly (4) is installed on the outer tube (1) and is connected to one end of the support assembly (3).

2. The support structure between the inner and outer sheaths of a surgical forceps according to claim 1, characterized in that, The support assembly (3) includes a support plate (31), an inner ring (33) and an outer ring (34). The support plate (31) has several rings that are circumferentially distributed. The inner ring (33) has several rings that are evenly installed on one side of the support plate (31). The outer ring (34) has several rings that are evenly installed on the other side of the support plate (31). The inner ring (33) is attached to the outer side of the inner tube (2). The outer ring (34) is attached to the inner side of the outer tube (1). The inner ring (33) is connected to the inner tube (2). The outer ring (34) is rotatably connected to the outer tube (1).

3. The support structure between the inner and outer sheaths of a surgical forceps according to claim 2, characterized in that, A limiting ring (11) is installed on the inner side of the outer tube (1). The limiting ring (11) is in contact with the end face of the support plate (31). A rotating ring (41) is installed on the support plate (31). A rotating groove (12) is provided on the limiting ring (11). The rotating ring (41) matches the rotating groove (12).

4. The support structure between the inner and outer sheaths of a surgical forceps according to claim 2, characterized in that, The screwing assembly (4) includes a rotating ring (41) and a rotating rod (35). The inner side of the rotating ring (41) is in contact with the outer side of the outer ring (34). The inner side of the rotating ring (41) is provided with a meshing groove (43). The bottom surface of the meshing groove (43) is provided with a rotating groove (44). One end of the rotating rod (35) is placed in the meshing groove (43). A rotating block (45) is installed at the end of the rotating rod (35) placed in the meshing groove (43). The rotating rod (35) is connected to the rotating groove (44) through the rotating block (45). The gear is connected to the rotating ring (41) for rotation. A crown gear (46) is installed on one side of the meshing groove (43). A gear (47) is installed on the rotating rod (35). The gear (47) meshes with the crown gear (46). The other end of the rotating rod (35) passes through the outer tube (1) and is placed inside the outer tube (1). A crown gear (36) is installed on the support assembly (3). A gear (48) is installed on the rotating rod (35). The gear (48) meshes with the crown gear (36).

5. The support structure between the inner and outer sheaths of a surgical forceps according to claim 4, characterized in that, The outer tube (1) is provided with an exit groove (13), which corresponds to the rotating rod (35). A rotating block (49) is installed at one end of the rotating rod (35) that passes through the exit groove (13). A rotating groove (21) is installed on the inner tube (2). The rotating rod (35) is rotatably connected to the inner tube (2) through the cooperation of the rotating block (49) and the rotating groove (21).

6. The support structure between the inner and outer sheaths of a surgical forceps according to claim 4, characterized in that, The rotating ring (41) is equipped with friction blocks (411), and there are several friction blocks (411) arranged in a circular pattern. The outer side of the outer tube (1) is provided with a retaining ring (14), and the retaining ring (14) is in contact with the rotating ring (41).

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