Clip applier base

Abstract

The utility model discloses a clip applier base, which relates to the field of medical auxiliary instruments and comprises mounting seats fixedly connected with two clip heads respectively, one end of each mounting seat is rotatably connected with a group of connecting rods, the number of each group of connecting rods is two, and the two connecting rods are parallel to each other. The other ends of the two sets of connecting rods are jointly and rotationally connected with a fixing base, a driving mechanism is arranged at the end, away from the connecting rods, of the fixing base and used for driving the two tong heads to move close to each other, and the two tong heads are arranged in parallel in the close-to-each other process. The driving mechanism is arranged to be matched with the rotating shaft to realize synchronous approaching movement of the two forceps heads, so that uniform clamping force is formed on a blood vessel, and the probability of blood vessel damage is reduced; under the condition of no external force, the forceps head keeps the maximum opening and closing angle, so that the blood vessel is conveniently clamped; the tong heads cannot move under the action of external force, so that the clamping stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary devices, and in particular to a clamping clamp base. Background Technology

[0002] Application clamps are instruments used to assist in the installation of ligation clips on blood vessels, primarily for clamping small blood vessels. For example, Chinese Patent CN108261220A discloses one such instrument, whose key technical features include a clamp handle, clamp tube, inner core rod, clamp base, and clamping head. The clamping head consists of a left clamp head and a right clamp head hinged at one end. When the left and right clamp heads move closer together, the area near the hinge point in the blood vessel experiences the greatest force first, making it prone to breakage. Areas further away from the hinge point experience less force, resulting in uneven force distribution and affecting hemostasis. Therefore, we propose an application clamp base to change the way the clamping heads move relative to each other, ensuring more even force distribution across the clamped area. Utility Model Content

[0003] The main purpose of this utility model is to provide a clamping clamp base that can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A clamping pliers base includes mounting seats that are fixedly connected to two clamp heads respectively. Each mounting seat has a set of connecting rods rotatably connected to one end. Each set of connecting rods has two rods, and the two connecting rods are arranged parallel to each other. The other ends of the two sets of connecting rods are rotatably connected to a fixed seat. The fixed seat has a driving mechanism at the end away from the connecting rods. The driving mechanism is used to drive the two clamp heads to move closer to each other, and the two clamp heads are arranged parallel to each other during the process of moving closer to each other.

[0006] Preferably, each of the two adjacent links in the two sets of links is equipped with a rotating shaft arranged in a vertical direction. A worm gear is fixedly sleeved on the circumferential surface of the rotating shaft, and a worm is meshed between the two worm gears. The worm is movably connected to the fixed seat.

[0007] Preferably, a rotatable rotating shaft is installed at one end of the worm gear.

[0008] Preferably, the circumferential surface of the rotating shaft is provided with a driving groove, which is composed of two symmetrically arranged arc grooves connected end to end; the rotating shaft extends into the interior of the driving mechanism.

[0009] Preferably, the driving mechanism includes a fixed tube fixedly connected to a fixed base, a movable tube slidably connected to the fixed tube along its axis, the movable tube being movably sleeved on a rotating shaft, and a driving block slidably connected to a driving groove installed on the inner wall of the movable tube.

[0010] Preferably, a retaining seat is installed at one end of the movable tube near the rotating shaft, and a spring is sleeved on the circumferential surface of the rotating shaft, with both ends of the spring connected to a fixed seat and a retaining seat, respectively.

[0011] Preferably, the inner wall of the fixed tube is provided with a guide groove along its axial direction, and the card seat is slidably assembled with the guide groove.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. By setting a set of connecting rods, the mounting base and the fixing base form a parallelogram structure. The clamp head is fixedly connected to the mounting base. Then, by setting a drive mechanism in conjunction with the rotating shaft, the two clamp heads move synchronously closer to each other, thereby clamping the blood vessel. The clamping force is uniform, reducing the probability of blood vessel damage.

[0014] 2. By setting a spring to create tension on the movable tube, the driving block is fixed in the driving groove without external force, so that the clamp head maintains the maximum opening and closing angle, which is convenient for clamping blood vessels.

[0015] 3. The opening and closing motion of the pliers head is achieved by setting a worm gear and worm wheel structure, and the pliers head cannot move when subjected to external force, thus ensuring the stability of clamping. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the entire base structure proposed in this embodiment;

[0017] Figure 2 This is a schematic diagram of the installation structure of the entire base proposed in this embodiment;

[0018] Figure 3 This is a schematic cross-sectional view of the clamp tube in this embodiment;

[0019] Figure 4 This is a schematic diagram of the connecting rod installation structure in this embodiment;

[0020] Figure 5 This is a schematic diagram of the three-dimensional path of the drive slot in this embodiment;

[0021] Figure 6 This is a cross-sectional structural diagram of the drive mechanism in this embodiment;

[0022] Figure 7 This is a schematic cross-sectional view of the fixed tube in this embodiment;

[0023] Figure 8 This is a schematic cross-sectional view of the movable tube in this embodiment.

[0024] In the diagram: 1. Fixed base; 2. Connecting rod; 3. Mounting base; 4. Clamp head; 5. Drive mechanism; 6. Clamp tube; 7. Inner core rod; 21. Rotating shaft; 22. Worm gear; 23. Worm; 24. Rotating shaft; 25. Drive groove; 51. Fixed tube; 52. Movable tube; 53. Drive block; 54. Spring; 511. Guide groove; 521. Card seat; 522. Internal thread. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] like Figures 1-8 As shown, a clamping clamp base includes a mounting base 3 fixedly connected to two clamp heads 4. The clamping of blood vessels is achieved by the two clamp heads 4 moving closer together. However, in practical applications, the two clamp heads 4 often move closer together like scissors, resulting in greater force on the area near the hinge point of the clamped blood vessel, making it prone to damage, while the area away from the hinge point experiences less force, leading to uneven clamping force and affecting the hemostasis effect. Therefore, in this invention, each mounting base 3 is rotatably connected to a set of connecting rods 2 at one end. Each set of connecting rods 2 has two rods, and the two connecting rods 2 are arranged parallel to each other. The other end of both sets of connecting rods 2 is rotatably connected to a fixed base 1. The fixed base 1, away from the connecting rods 2, is provided with a driving mechanism 5. The driving mechanism 5 is used to drive the two clamp heads 4 to move closer together, and during the process of moving closer together, the two clamp heads 4 are arranged parallel to each other.

[0029] By having two clamp heads 4 move closer to each other while remaining parallel to each other, the blood vessel is clamped, resulting in uniform clamping force and reducing the probability of blood vessel rupture.

[0030] In this system, each of the two adjacent connecting rods 2 is equipped with a vertically arranged rotating shaft 21. A worm gear 22 is fixedly fitted onto the circumference of each rotating shaft 21, and a worm 23 meshes between the two worm gears 22. The worm 23 is movably connected to the fixed base 1. The rotation of the worm 23 drives the two opposing worm gears 22 to rotate synchronously in opposite directions, thus causing the two sets of connecting rods 2 to move closer together.

[0031] In order for the base to be compatible with the existing application clamp, that is, to drive the rotation of the worm 23 by the axial movement of the inner core rod 7 in the clamp tube 6, this embodiment is achieved by the drive mechanism 5 in conjunction with the rotating shaft 24. Specifically, a rotatable rotating shaft 24 is installed at one end of the worm 23; a drive groove 25 is opened on the circumferential surface of the rotating shaft 24, and the drive groove 25 is composed of two symmetrically arranged arc grooves connected end to end; the rotating shaft 24 extends into the drive mechanism 5; the drive mechanism 5 includes a fixed tube 51 fixedly connected to the fixed base 1, a movable tube 52 is axially slidably connected to the fixed tube 51, the movable tube 52 is movably sleeved on the rotating shaft 24, and a drive block 53 is installed on the inner wall of the movable tube 52 and slidably connected to the drive groove 25; an internal thread 522 is provided at the end of the movable tube 52 away from the rotating shaft 24, and the movable tube 52 is fixedly connected to the inner core rod 7 through the internal thread 522. When the inner core rod 7 moves along the axial direction of the clamp tube 6, the inner core rod 7 drives the movable tube 52 to move, the movable tube 52 drives the drive block 53 to move, and the drive groove 25 drives the rotating shaft 24 to rotate.

[0032] When the drive block 53 is in the drive groove 25 near the end of the rotating shaft 24, the two clamp heads 4 are in their maximum open / closed state. At this time, the distance between the fixed handle and the movable handle in the application clamp is at its maximum. To facilitate the doctor's gripping force on the movable handle, causing the inner core rod 7 to move linearly away from the movable tube 52, in this embodiment, a retainer 521 is installed at the end of the movable tube 52 near the rotating shaft 24, and a spring 54 is sleeved on the circumferential surface of the rotating shaft 24. The two ends of the spring 54 are connected to the fixed seat 1 and the retainer 521, respectively. The elastic force of the spring 54 keeps the movable tube 52 in a position close to the rotating shaft 24, that is, the two clamp heads 4 maintain the maximum opening / closing angle, which facilitates the placement of blood vessels between the two clamp heads 4 and improves practicality.

[0033] Based on the above scheme, if the movable tube 52 rotates, it will affect the rotation of the rotating shaft 24. Therefore, the inner wall of the fixed tube 51 is provided with a guide groove 511 along its axial direction. The card seat 521 is slidably assembled with the guide groove 511, so that the movable tube 52 can only move linearly along the axial direction of the fixed tube 51.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A clamping clamp base, comprising mounting bases (3) respectively fixedly connected to two clamp heads (4), characterized in that: Each mounting base (3) is rotatably connected to a set of connecting rods (2) at one end. Each set of connecting rods (2) has two rods, and the two connecting rods (2) are arranged parallel to each other. The other ends of the two sets of connecting rods (2) are rotatably connected to a fixed base (1). The fixed base (1) is provided with a driving mechanism (5) at the end away from the connecting rods (2). The driving mechanism (5) is used to drive the two clamp heads (4) to move closer to each other. During the process of moving closer to each other, the two clamp heads (4) are arranged parallel to each other.

2. The clamp base according to claim 1, characterized in that: In the two sets of connecting rods (2), each of the two adjacent connecting rods (2) is equipped with a rotating shaft (21) arranged in the vertical direction. A worm wheel (22) is fixedly sleeved on the circumferential surface of the rotating shaft (21). A worm (23) is meshed between the two worm wheels (22). The worm (23) is movably connected to the fixed seat (1).

3. The clamp base according to claim 2, characterized in that: One end of the worm (23) is equipped with a rotatable rotating shaft (24).

4. The clamp base according to claim 3, characterized in that: The circumferential surface of the rotating shaft (24) is provided with a drive groove (25), which is composed of two symmetrically arranged arc grooves connected end to end; the rotating shaft (24) extends into the drive mechanism (5).

5. A clamping clamp base according to claim 4, characterized in that: The drive mechanism (5) includes a fixed tube (51) fixedly connected to the fixed seat (1), and a movable tube (52) is axially slidably connected to the fixed tube (51). The movable tube (52) is movably sleeved on the rotating shaft (24), and a drive block (53) is installed on the inner wall of the movable tube (52) and is slidably connected to the drive groove (25).

6. A clamping clamp base according to claim 5, characterized in that: The movable tube (52) is fitted with a retainer (521) at one end near the rotating shaft (24). A spring (54) is sleeved on the circumferential surface of the rotating shaft (24). The two ends of the spring (54) are connected to the fixed seat (1) and the retainer (521) respectively.

7. A clamping clamp base according to claim 5, characterized in that: The inner wall of the fixed tube (51) is provided with a guide groove (511) along its axial direction, and the guide groove (511) is slidably assembled with the card seat (521).

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