A slip ring assembly for a hemostatic clip

Abstract

The utility model relates to the technical field of hemostatic clamp, especially a slip ring assembly of hemostatic clamp, including operating rod, coaxial cover set on the knob of operating rod, fixedly connected in the inner peripheral bearing of knob, the connecting block of coaxial setting in operating rod, two symmetrical settings insert stick, its fixedly connected in fixed plate outer wall and fixedly set in the push block of insert stick outer wall, operating rod outer wall is opened with two removal holes along the axial symmetry, the knob forms the screw thread cooperation with operating rod. By rotating the knob, make the knob spiral movement along operating rod outer wall, when the knob moves, drive fixed plate along the inner wall sliding of removal hole through the bearing, when fixed plate moves, promote the insert stick movement, make the end of insert stick insert into the sliding slot, produce extrusion to the clamping block through the push block, until the clamping block is pushed out from the card slot, at this moment, through the sliding slip ring, can make the chuck quick release, reduce the operation difficulty.

Description

Technical Field

[0001] This utility model relates to the field of hemostatic clip technology, and more specifically, to a slip ring assembly for a hemostatic clip. Background Technology

[0002] In the field of minimally invasive surgery, hemostatic clips are important instruments used to clamp blood vessels or tissue wounds. Their core function relies on the precise opening and closing control and reliable locking of the clip arms. Traditional hemostatic clips typically use a slip ring assembly to drive the movement of the clip arms, and the clamping action is achieved through the linkage between the operating lever and an external control mechanism.

[0003] In the prior art announcement document CN209018848U, a handle assembly for a hemostatic clip is disclosed. In this patent, because the locking teeth are wedge-shaped and there is no bevel transition on the rear side, when the locking teeth are inserted into the locking groove, the rear side of the locking groove exerts a force on the rear side of the locking teeth to make them tilt upwards, which hinders the forward movement of the slip ring and makes it difficult for the locking teeth to disengage from the locking groove. Although it can effectively fix the slip core, this connection method not only increases the difficulty of operation when releasing the hemostatic clip, but also affects the efficiency of surgery. Utility Model Content

[0004] Based on the aforementioned technical problem that the wedge-shaped locking teeth, lacking a beveled transition on the rear side, cause the locking teeth to tilt upwards when they are inserted into the slot, hindering the forward movement of the slip ring and making it difficult for the locking teeth to disengage from the slot, although effectively fixing the slip core, this connection method not only increases the difficulty of operation when releasing the hemostatic clip but also affects the efficiency of surgery, this utility model proposes a slip ring assembly for the hemostatic clip. By rotating the knob, the end of the insertion rod is inserted into the slip groove, and the pushing block squeezes the locking block until it is pushed out of the slot, which enables the clip to be released quickly and reduces the difficulty of operation.

[0005] The present invention proposes a slip ring assembly for a hemostatic clip, comprising an operating rod, a connecting block, an insert rod, a push block, a knob, and a bearing; the outer wall of the operating rod has two symmetrically arranged moving holes along the axial direction.

[0006] The knob is coaxially sleeved on the operating lever, and the knob and the operating lever form a threaded engagement.

[0007] The bearing is fixedly connected to the inner circumference of the knob, and the inner ring of the bearing is fixedly connected to a radially extending fixing plate. The two ends of the fixing plate are slidably connected to the moving hole.

[0008] The connecting block is coaxially disposed inside the operating rod, and two axially extending slots are symmetrically opened on the outer periphery of the connecting block. Each slot has a sliding groove extending radially outward through its groove wall.

[0009] Two insert rods are symmetrically arranged, the insert rods are fixedly connected to the outer wall of the fixed plate, and the insert rods are slidably connected to the inner wall of the slide groove; the push block is fixedly arranged on the outer wall of the insert rod, and the push block is slidably connected to the inner wall of the slide groove.

[0010] Preferably, a positioning cap is fixedly connected to the distal end of the operating rod, a spring tube is coaxially fixed to the inner circumference of the positioning cap, the axial extension of the spring tube passes through the distal end of the operating rod, a pull rod shaft is fixedly connected to the distal end of the connecting block, the distal end of the pull rod shaft is fixedly connected to the extension end of the spring tube, and a fixing ring is fixedly connected to the outer circumference of the operating rod.

[0011] Preferably, the inner wall of the operating rod has two axially extending mounting cavities symmetrically formed, and each mounting cavity has a telescopic groove on both side walls.

[0012] Preferably, each of the mounting cavities is provided with a movable locking block, the protrusion of the locking block engaging with the slot on the connecting block, and two connecting ears symmetrically fixed to the outer wall of the locking block, the extension ends of the connecting ears extending into the telescopic groove on the corresponding side and slidingly engaging with the groove wall.

[0013] Preferably, a return spring is connected between the outer wall of the card block and the inner wall of the mounting cavity, and the two axial ends of the return spring are respectively connected to the spring seat on the outer wall of the card block and the fixing seat on the inner wall of the mounting cavity.

[0014] Preferably, the outer wall of the operating rod has two radially penetrating guide sliding holes symmetrically formed, the outer periphery of the operating rod is fitted with an axially sliding slip ring, the inner periphery of the slip ring is fixedly connected with a slide rod that passes through the guide sliding holes, and the slide rod is fixedly connected to the connecting block.

[0015] Preferably, the outer periphery of the knob is provided with anti-slip texture, which includes spaced axial protrusions and annular grooves.

[0016] Preferably, the far end of the push block is provided with a guide slope, and the inclination direction of the guide slope forms a 30° angle with the extension direction of the groove.

[0017] The beneficial effects of this utility model, achieved through the above technical solution, are as follows:

[0018] 1. By rotating the knob, the knob moves spirally along the outer wall of the operating rod. When the knob moves, the bearing drives the fixing plate to slide along the inner wall of the moving hole. When the fixing plate moves, it pushes the insertion rod to move, so that the end of the insertion rod is inserted into the slide groove. The push block squeezes the locking block until the locking block is pushed out of the locking groove. At this time, the chuck can be quickly released by sliding the slip ring, reducing the difficulty of operation.

[0019] 2. The end of the connecting block presses against the locking block, at which point the locking block moves into the mounting cavity and presses against the return spring. Under the elastic force of the return spring, the locking block is locked into the slot on the connecting block, thereby fixing the connecting block and improving the stability and safety during the clamping process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the installation structure of the insertion rod of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the connecting block of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the card block of this utility model.

[0025] In the diagram: 1. Operating lever; 2. Positioning cap; 3. Bourdon tube; 4. Fixing ring; 5. Guide slide hole; 6. Pull rod shaft; 7. Connecting block; 8. Slide rod; 9. Slot; 10. Slide groove; 11. Mounting cavity; 12. Telescopic groove; 13. Locking block; 14. Connecting ear; 15. Return spring; 16. Insert rod; 17. Push block; 18. Knob; 19. Bearing; 20. Fixing plate; 21. Moving hole; 22. Slip ring. Detailed Implementation

[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. In this utility model, unless otherwise expressly specified and limited, the term "fixed connection" should be interpreted broadly. For example, "fixed connection" can mean fixed installation, detachable connection, or integral; it can mean mechanical connection or electrical connection; it can mean direct connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] like Figures 1-4 As shown, a slip ring assembly for a hemostatic clip is characterized by comprising an operating rod 1, a connecting block 7, an insert rod 16, a push block 17, a knob 18, and a bearing 19, wherein two moving holes 21 are symmetrically opened along the axial direction on the outer wall of the operating rod 1.

[0028] The knob 18 is coaxially sleeved on the operating lever 1, and the knob 18 and the operating lever 1 form a threaded engagement.

[0029] The bearing 19 is fixedly connected to the inner circumference of the knob 18. The inner ring of the bearing 19 is fixedly connected to a radially extending fixing plate 20. The two ends of the fixing plate 20 are slidably connected to the moving hole 21.

[0030] The connecting block 7 is coaxially arranged inside the operating lever 1. Two axially extending slots 9 are symmetrically opened on the outer periphery of the connecting block 7. Each slot 9 has a sliding groove 10 extending radially outward through its groove wall.

[0031] Two insert rods 16 are symmetrically arranged, and the insert rods 16 are fixedly connected to the outer wall of the fixed plate 20. The insert rods 16 are slidably connected to the inner wall of the slide groove 10. The push block 17 is fixedly set on the outer wall of the insert rods 16 and is slidably connected to the inner wall of the slide groove 10. By rotating the knob 18, the knob 18 moves spirally along the outer wall of the operating rod 1. When the knob 18 moves, the fixed plate 20 is driven to slide along the inner wall of the moving hole 21 through the bearing 19. When the fixed plate 20 moves, it pushes the insert rods 16 to move, so that the end of the insert rods 16 is inserted into the slide groove 10. The push block 17 squeezes the locking block 13 until the locking block 13 is pushed out of the locking groove 9. At this time, the chuck can be quickly released by sliding the slip ring 22, reducing the difficulty of operation.

[0032] In some embodiments, such as Figure 1 and Figure 2 As shown, a positioning cap 2 is fixedly connected to the far end of the operating lever 1, a spring tube 3 is coaxially fixed to the inner circumference of the positioning cap 2, the axial extension of the spring tube 3 passes through the far end of the operating lever 1, a pull rod shaft 6 is fixedly connected to the far end of the connecting block 7, the far end of the pull rod shaft 6 is fixedly connected to the extension end of the spring tube 3, and a fixing ring 4 is fixedly connected to the outer circumference of the operating lever 1.

[0033] In some embodiments, such as Figure 3 and Figure 5 As shown, the inner wall of the operating lever 1 has two axially extending mounting cavities 11 symmetrically opened. Each mounting cavity 11 has a telescopic groove 12 on both sides. Each mounting cavity 11 is provided with a movable locking block 13. The protrusion of the locking block 13 engages with the locking groove 9 on the connecting block 7. The outer wall of the locking block 13 has two symmetrically fixed connecting ears 14. The extension ends of the connecting ears 14 extend into the telescopic groove 12 on the corresponding side and slide with the groove wall. A return spring 15 is connected between the outer wall of the locking block 13 and the inner wall of the mounting cavity 11. The two axial ends of the return spring 15 are connected to the spring seat on the outer wall of the locking block 13 and the fixed seat on the inner wall of the mounting cavity 11, respectively.

[0034] The axial extension of the mounting cavity 11 and the transverse passage of the telescopic groove 12 form a cross-shaped guide channel, so that the protrusion of the locking block 13 can only move along the preset trajectory, ensuring precise alignment with the locking groove 9.

[0035] In some embodiments, such as Figure 1 and Figure 3As shown, two radially penetrating guide sliding holes 5 are symmetrically opened on the outer wall of the operating rod 1. An axially sliding slip ring 22 is sleeved on the outer periphery of the operating rod 1. A sliding rod 8 that passes through the guide sliding hole 5 is fixedly connected to the inner periphery of the slip ring 22. The sliding rod 8 is fixedly connected to the connecting block 7.

[0036] In some embodiments, such as Figure 3 As shown, the outer periphery of the knob 18 is provided with anti-slip texture, which includes spaced axial protrusions and annular grooves;

[0037] The anti-slip texture design increases the friction of knob 18, making it easier for operators to rotate.

[0038] In some embodiments, such as Figure 3 As shown, the far end of the push block 17 is provided with a guide slope, and the inclination direction of the guide slope forms a 30° angle with the extension direction of the slide groove 10.

[0039] The angled design facilitates the push block 17 to press against the card block 13, reducing the resistance when the push block 17 moves.

[0040] Working principle: The sliding ring 22 slides along the outer wall of the operating rod 1. The sliding ring 22 drives the sliding rod 8 to slide along the inner wall of the guide sliding hole 5. The sliding rod 8 drives the connecting block 7 to move, so that the end of the connecting block 7 presses against the locking block 13. At this time, the locking block 13 moves into the mounting cavity 11 and presses against the return spring 15. Under the elastic force of the return spring 15, the locking block 13 is locked into the slot 9 on the connecting block 7, so as to stably fix the connecting block 7.

[0041] When the connecting block 7 moves, it drives the pull rod shaft 6 to move. The pull rod shaft 6 then pulls the clamp to close via the spring tube 3, thus achieving clamping.

[0042] When it is necessary to release, rotate the knob 18 to make the knob 18 move spirally along the outer wall of the operating rod 1. When the knob 18 moves, the bearing 19 drives the fixing plate 20 to slide along the inner wall of the moving hole 21. When the fixing plate 20 moves, it pushes the insertion rod 16 to move, so that the end of the insertion rod 16 is inserted into the slide groove 10. The push block 17 squeezes the locking block 13 until the locking block 13 is pushed out of the locking groove 9. At this time, the chuck can be released by sliding the slip ring 22.

[0043] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A slider ring assembly for a hemostatic clip, characterized by include: The operating lever (1) has two symmetrical moving holes (21) on its outer wall along the axial direction; A knob (18) is coaxially sleeved on the operating lever (1), and the knob (18) and the operating lever (1) form a threaded engagement; A bearing (19) is fixedly connected to the inner circumference of the knob (18). The inner ring of the bearing (19) is fixedly connected to a radially extending fixing plate (20). The two ends of the fixing plate (20) are slidably connected in the moving hole (21). A connecting block (7) is coaxially arranged inside the operating lever (1). The outer periphery of the connecting block (7) is symmetrically provided with two axially extending slots (9). The groove wall of each slot (9) is provided with a sliding groove (10) extending radially outward. Two symmetrically arranged insert rods (16) are fixedly connected to the outer wall of the fixing plate (20), and the insert rods (16) are slidably connected to the inner wall of the slide groove (10); A push block (17) is fixedly installed on the outer wall of the insert rod (16), and the push block (17) is slidably connected to the inner wall of the slide groove (10).

2. The slip ring assembly of the hemostatic clip according to claim 1, characterized in that: The operating lever (1) is fixedly connected to a positioning cap (2) at its distal end. A spring tube (3) is coaxially fixed to the inner circumference of the positioning cap (2). The axial extension of the spring tube (3) passes through the distal end of the operating lever (1). A pull rod shaft (6) is fixedly connected to the distal end of the connecting block (7). The distal end of the pull rod shaft (6) is fixedly connected to the extension end of the spring tube (3). A fixing ring (4) is fixedly connected to the outer circumference of the operating lever (1).

3. The slip ring assembly of the hemostatic clip according to claim 2, characterized in that: The inner wall of the operating lever (1) has two axially extending mounting cavities (11) symmetrically opened, and each mounting cavity (11) has a telescopic groove (12) on both sides.

4. The slip ring assembly of the hemostatic clip according to claim 3, characterized in that: Each of the mounting cavities (11) is provided with a movable locking block (13). The protrusion of the locking block (13) engages with the locking groove (9) on the connecting block (7). Two connecting ears (14) are symmetrically fixed on the outer wall of the locking block (13). The extension end of the connecting ear (14) extends into the telescopic groove (12) on the corresponding side and slides with the groove wall.

5. The slip ring assembly of the hemostatic clip according to claim 4, characterized in that: A return spring (15) is connected between the outer wall of the card block (13) and the inner wall of the mounting cavity (11). The two axial ends of the return spring (15) are respectively connected to the spring seat on the outer wall of the card block (13) and the fixing seat on the inner wall of the mounting cavity (11).

6. The slip ring assembly of the hemostatic clip according to claim 5, characterized in that: The outer wall of the operating rod (1) has two radially penetrating guide sliding holes (5) symmetrically opened. The outer periphery of the operating rod (1) is fitted with an axially sliding slip ring (22). The inner periphery of the slip ring (22) is fixedly connected with a slide rod (8) that passes through the guide sliding hole (5). The slide rod (8) is fixedly connected to the connecting block (7).

7. The slip ring assembly of the hemostatic clip according to claim 6, characterized in that: The outer periphery of the knob (18) is provided with anti-slip texture, which includes spaced axial protrusions and annular grooves.

8. The slip ring assembly of the hemostatic clip according to claim 7, characterized in that: The far end of the push block (17) is provided with a guide slope, and the inclination direction of the guide slope forms a 30° angle with the extension direction of the slide groove (10).

Images