Continuous clip applier capable of reducing rotation friction force of main shaft

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a running clip applier capable of reducing the rotating friction force of a main shaft. The utility model aims at solving the problems that in the prior art, friction force is large, a rotating wheel is difficult to shift by fingers, and clinical operation is affected, and provides a continuous-shooting clip applier capable of reducing rotating friction force of a main shaft, and the continuous-shooting clip applier comprises an outer shell and a handle connected to the outer shell in a rotating mode. A rotating wheel used for driving the main shaft to rotate is connected to the main shaft, a lubricating assembly used for reducing friction force is further arranged between the outer shell and the main shaft, one end of the lubricating assembly is arranged on the outer surface of the main shaft in a pressed mode, and the other end of the lubricating assembly is arranged on the inner surface of the outer shell in a pressed mode. The lubricating assembly is additionally arranged between the outer shell and the main shaft to replace a clamp spring structure in the prior art, sliding friction between the clamp spring and the outer shell is changed into rolling friction of the bearing, and the purpose of reducing rotation driving force is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a continuous-fire clamp that can reduce the rotational friction of the spindle. Background Technology

[0002] Surgical clamps are medical instruments used to clamp blood vessels, tissues, or other structures, primarily for hemostasis or closure of conduits; they are also known as hemostatic forceps. To meet the clinical need for adjustable clamping angles, the main shaft of the clamp is typically designed to rotate, and this rotation is achieved by turning a wheel with a finger. However, in existing clamp technology, the main shaft rotates via a sliding fit between a retaining spring and the outer shell. After clamping, the axial force creates significant pressure between the retaining spring and the outer shell, increasing friction and making it difficult to turn the wheel with a finger, thus affecting clinical operation.

[0003] For example, a Chinese invention patent discloses a continuous-fire clamp [application number: CN 201910733751.7]. This invention patent includes a push handle, a tube rod, and a clamp head installed at the front end of the tube rod. Its distinguishing feature is that it further includes a feeding device, a push-pull rod, and a storage bin disposed within the tube rod. The feeding device includes a conveying component and a driving component for moving the conveying component. A shaft is provided near the front end of the tube rod for fixing the clamp head. The conveying component has a strip-shaped groove, with at least one pair of protruding anti-reverse clamps on both sides of the groove. The shaft passes through the strip-shaped groove and is fixed at both ends to the tube rod. The diameter of the end of each anti-reverse clamp is smaller than the diameter of the shaft. After the conveying component pushes the clamp to close, the shaft is elastically clamped between the two anti-reverse clamps to prevent the conveying component from retracting. The storage bin includes a front bin and a rear bin. The front bin extends to the opening of the clamp head. An upper lip and a lower lip are provided at the connection between the front bin and the rear bin. The lower lip plates are respectively located at the upper and lower parts of the front compartment, and are spaced apart from the top and bottom of the front compartment. The left and right sides of the rear compartment have strip-shaped side grooves. The front compartment and the rear compartment are integrally formed, and the rear end of the rear compartment is threaded to the front end of the push-pull rod. The clamp head includes a pair of opposing clamp arms. The inner side of the clamp arms is provided with a guide groove. The guide groove is an extension of the front compartment. The bottom of the guide groove is provided with an anti-disengagement hole near the top. The outer side of the closing clamp has a protrusion. The conveying component pushes the closing clamp to slide into the guide groove from the opening of the front compartment. The closing clamp opens under its own tension, so that the protrusion on the outer wall of the closing clamp is locked in the anti-disengagement hole. The conveying component includes a top rod and a hollow cavity. The push-pull rod is placed inside the hollow cavity. The front end of the hollow cavity has side strips extending along the axial direction of the hollow cavity. The side strips pass through the side grooves.

[0004] Although this invention patent has the advantage of preventing the transmission component from retracting during normal use of the rapid-fire clamp and preventing accidental operation that causes the drive component to push the transmission component forward or backward, it still does not solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to address the above-mentioned problems by providing a continuous-fire clamp that can reduce the rotational friction of the spindle.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A type of continuous-fire clamp that can reduce spindle rotational friction includes a housing and a handle rotatably connected to the housing. One end of the spindle is located inside the housing, and the other end extends outside the housing and is provided with a clamp head. A rotating wheel for driving the spindle to rotate is connected to the spindle. A lubrication component for reducing friction is also provided between the housing and the spindle. One end of the lubrication component is pressed against the outer surface of the spindle, and the other end is pressed against the inner surface of the housing.

[0008] In the aforementioned type of continuous-fire clamp that can reduce spindle rotational friction, the lubrication assembly includes a bearing, a first limiting structure disposed on the spindle, and a second limiting structure disposed on the housing. The first limiting structure is attached to the inner ring side of the bearing, and the second limiting structure is attached to the outer ring side of the bearing.

[0009] In the aforementioned type of continuous-fire clamp that can reduce spindle rotational friction, the first limiting structure includes two limiting rings fixedly connected to the spindle surface, the inner ring of the bearing is fitted between the two limiting rings and the limiting rings abut against the side of the inner ring of the bearing.

[0010] In the aforementioned type of continuous-fire clamp that can reduce spindle rotational friction, the second limiting structure includes a limiting groove recessed into the housing, and the outer ring of the bearing is fitted into the limiting groove.

[0011] In the aforementioned type of continuous-fire clamp that can reduce spindle rotational friction, the axis of the bearing coincides with the axis of the spindle.

[0012] In the aforementioned type of continuous-fire clamp that can reduce spindle rotational friction, the outer housing is further provided with a clearance hole that penetrates the outer housing, and the rotating wheel extends to the outside of the outer housing through the clearance hole.

[0013] In the aforementioned type of continuous-fire clamp that can reduce spindle rotational friction, the spindle is further provided with several columnar connecting rods, which extend radially along the spindle and have one end inserted into the rotating wheel.

[0014] In the aforementioned type of continuous firing clamp that can reduce spindle rotational friction, the columnar connecting rods are provided in three parts and are evenly distributed circumferentially along the axis of the spindle.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] 1. This utility model replaces the snap ring structure in the prior art by adding a lubrication component between the outer shell and the main shaft, and changes the sliding friction between the snap ring and the outer shell to the rolling friction of the bearing, thereby reducing the rotational driving force.

[0017] 2. This utility model has a simple structure, is easy to operate, and is suitable for large-scale promotion and use. Attached Figure Description

[0018] Figure 1 This is an exploded view of the present invention;

[0019] Figure 2 This is the front view of the present invention;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] In the figure: 1. Outer shell; 2. Handle; 3. Spindle; 4. Clamping head; 5. Rotary wheel; 6. Lubrication assembly; 7. Clearance hole; 8. Columnar connecting rod; 61. Bearing; 62. First limiting structure; 63. Second limiting structure; 64. Limiting ring; 65. Limiting groove. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Combination Figure 1-3 As shown, a type of continuous-fire clamp that can reduce the rotational friction of the spindle includes a housing 1 and a handle 2 rotatably connected to the housing 1. One end of the spindle 3 is located inside the housing 1, and the other end extends to the outside of the housing 1 and is provided with a clamp head 4. A rotating wheel 5 for driving the spindle 3 to rotate is connected to the spindle 3. A lubrication assembly 6 for reducing friction is also provided between the housing 1 and the spindle 3. One end of the lubrication assembly 6 is pressed on the outer surface of the spindle 3, and the other end is pressed on the inner surface of the housing 1.

[0024] In this invention, during use, the user rotates the main shaft 3 by turning the rotating wheel 5. The friction between the main shaft 3 and the outer casing 1 is reduced by the lubrication assembly 6. Therefore, this invention achieves the purpose of reducing the rotational driving force by adding a lubrication assembly 6 between the outer casing 1 and the main shaft 3 to replace the snap ring structure in the prior art, changing the sliding friction between the snap ring and the outer casing 1 to the rolling friction of the bearing.

[0025] like Figure 1 As shown, the lubrication assembly 6 includes a bearing 61, a first limiting structure 62 disposed on the spindle 3, and a second limiting structure 63 disposed on the outer casing 1. The first limiting structure 62 is attached to the inner ring side of the bearing 61, and the second limiting structure 63 is attached to the outer ring side of the bearing 61.

[0026] Specifically, the first limiting structure 62 includes two limiting rings 64 fixedly connected to the surface of the main shaft 3. The inner ring of the bearing 61 is fitted between the two limiting rings 64, and the limiting rings 64 abut against the side of the inner ring of the bearing 61. The second limiting structure 63 includes a limiting groove 65 recessed into the housing 1, and the outer ring of the bearing 61 is fitted into the limiting groove 65.

[0027] Preferably, the centerline of the bearing 61 coincides with the centerline of the spindle 3. This ensures the stability of the spindle 3 during rotation.

[0028] like Figure 3 As shown, the outer shell 1 is also provided with a clearance hole 7 that penetrates the outer shell 1, and the rotating wheel 5 extends to the outside of the outer shell 1 through the clearance hole 7. This facilitates the operation of the rotating wheel 5 by medical staff during surgery.

[0029] like Figure 1 As shown, the main shaft 3 is also provided with several columnar connecting rods 8, which extend radially along the main shaft 3 and have one end inserted into the rotating wheel 5. This connection method ensures the stability of the main shaft 3 after it is connected to the rotating wheel 5, and also facilitates the assembly of parts during the assembly process.

[0030] Preferably, the columnar connecting rods 8 are provided in three parts and are evenly distributed circumferentially along the axis of the main shaft 3. This ensures that the force transmitted from the rotating wheel 5 to the main shaft 3 is evenly distributed and relatively stable.

[0031] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0032] Although this document frequently uses terms such as outer casing 1, handle 2, spindle 3, pliers head 4, rotating wheel 5, lubrication assembly 6, clearance hole 7, columnar connecting rod 8, bearing 61, first limiting structure 62, second limiting structure 63, limiting ring 64, and limiting groove 65, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A series of clamps for reducing spindle rotational friction, comprising a housing (1) and a handle (2) rotatably connected to the housing (1), wherein one end of a spindle (3) is located inside the housing (1), and the other end extends to the outside of the housing (1) and is provided with a clamp head (4), and a rotating wheel (5) for driving the spindle (3) to rotate is connected to the spindle (3), characterized in that: A lubrication assembly (6) for reducing friction is provided between the outer shell (1) and the main shaft (3). One end of the lubrication assembly (6) is pressed on the outer surface of the main shaft (3), and the other end is pressed on the inner surface of the outer shell (1).

2. The continuous-fire clamping pliers as described in claim 1, characterized in that: The lubrication assembly (6) includes a bearing (61), a first limiting structure (62) disposed on the main shaft (3) and a second limiting structure (63) disposed on the outer casing (1). The first limiting structure (62) is attached to the inner ring side of the bearing (61), and the second limiting structure (63) is attached to the outer ring side of the bearing (61).

3. The continuous-fire clamping pliers that can reduce spindle rotational friction as described in claim 2, characterized in that: The first limiting structure (62) includes two limiting rings (64) fixedly connected to the surface of the main shaft (3), the inner ring of the bearing (61) is fitted between the two limiting rings (64) and the limiting rings (64) abut against the side of the inner ring of the bearing (61).

4. The continuous-fire clamping pliers as described in claim 2, characterized in that: The second limiting structure (63) includes a limiting groove (65) recessed into the outer shell (1), and the outer ring of the bearing (61) is fitted into the limiting groove (65).

5. A rapid-fire clamping pliers for reducing spindle rotational friction as described in claim 2, characterized in that: The centerline of the bearing (61) coincides with the centerline of the spindle (3).

6. The continuous-fire clamping pliers as described in claim 1, characterized in that: The outer shell (1) is also provided with a clearance hole (7) that passes through the outer shell (1), and the rotating wheel (5) extends to the outside of the outer shell (1) through the clearance hole (7).

7. A continuous-fire clamping pliers for reducing spindle rotational friction as described in claim 1, characterized in that: The main shaft (3) is also provided with several columnar connecting rods (8), which extend radially along the main shaft (3) and one end of the columnar connecting rod (8) is inserted into the rotating wheel (5).

8. A rapid-fire clamping pliers for reducing spindle rotational friction as described in claim 7, characterized in that: The columnar connecting rod (8) has three rods and is evenly distributed circumferentially along the axis of the main shaft (3).

Images