Snare with secure handle

Abstract

The utility model discloses a snare with safe and firm handle relates to medical instrument technical field, including handle rod spare, handle rod spare front end fixed mounting has the connecting end, is fixedly installed with the steel cable pipeline on the connecting end, is fixedly installed with the limit stop on handle rod spare, is installed with the drive assembly on handle rod spare, and the drive assembly includes handle slip ring slidingly installed on handle rod spare, two first ring is fixedly installed on handle slip ring, handle slip ring is fixedly installed with the connecting seat, is fixedly installed with the steel cable body on the connecting seat, and the steel cable body is movably installed in the steel cable pipeline, and the handle rod spare rear end is provided with adjusting mechanism. This snare with safe and firm handle, through the cooperation of drive assembly and adjusting mechanism, can adjust the initial distance between first ring and second ring, make handle suitable for different size palm, promote the comfort of use.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a snare with a safe and secure handle. Background Technology

[0002] A snare is a medical device used in minimally invasive surgery. It is typically made of flexible metal wire (such as nickel-titanium alloy) in a ring or spiral shape and connected to a handle control device.

[0003] In the prior art, patent announcement number CN222899279U discloses an adjustable electric snare, including a handle rod, a handle slip ring, an outer tube, a snare, and a pull cable. A rotary knob is installed at the front end of the handle rod, and a traction handle is provided on the rotary knob. The traction handle is rotatably engaged with the rotary knob, and a traction wire is connected to the traction handle. A through hole is opened in the side wall of the outer tube, and the front end of the traction wire extends out from the front end of the outer tube after passing through the through hole. The front end of the traction wire is fixedly connected to the front end of the snare. When the traction handle rotates, the traction wire actuates the snare to bend.

[0004] When using a snare device, fingers are hooked onto rings, and by applying force with the fingers, a steel cable is pulled, causing the snare to move into the pipe to grab or cut. Because of significant individual differences in hand size—some hands are relatively small, while others are larger—the issue of hand-size compatibility becomes particularly prominent when gripping the handle. Specifically, the initial spacing between the rings on the handle is fixed, lacking flexibility and adjustability, and cannot be adjusted according to the user's actual hand size. Therefore, users with smaller or larger hands often find the handle uncomfortable, and may even experience finger compression or over-extension, severely impacting the user experience. Summary of the Invention

[0005] The purpose of this invention is to provide a snare with a secure and sturdy handle to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a snare with a secure and sturdy handle, comprising a handle rod, a connecting end fixedly installed at the front end of the handle rod, a steel cable pipe fixedly installed at the connecting end, a limit stop fixedly installed on the handle rod, a driving assembly installed on the handle rod, the driving assembly including a handle slip ring slidably installed on the handle rod, two first finger rings fixedly installed on the handle slip ring, a connecting seat fixedly installed inside the handle slip ring, a steel cable body fixedly installed on the connecting seat, and the steel cable body movably installed inside the steel cable pipe, and an adjustment mechanism provided at the rear end of the handle rod.

[0007] Preferably, the drive assembly further includes a power slot fixedly mounted on the handle slip ring and component notches opened on both sides of the handle slip ring, and a snare body is fixedly mounted at the end of the steel cable body.

[0008] Preferably, the handle rod has a notch, and the connecting seat extends into the handle rod through the notch.

[0009] Preferably, the first ring is movably mounted on the outside of the handle rod via a handle slip ring, the connecting seat is movably mounted inside the handle rod via a handle slip ring, the steel cable body is fixed to the handle slip ring via the connecting seat, and the end of the steel cable body is connected to the power socket.

[0010] Preferably, the adjustment mechanism includes a movable slide groove on the handle rod, an adjustment slide bar slidably installed in the movable slide groove, an anti-slip block fixedly installed at one end of the adjustment slide bar, an end cap fixedly installed at the other end of the adjustment slide bar, a second finger ring fixedly installed on the end cap, positioning frames fixedly installed on both sides of the handle rod, locking screws threaded onto the positioning frames, and the adjustment slide bar slidably installed in the positioning frames. The handle rod is provided with scale lines, and the scale lines are vertically aligned with the anti-slip block.

[0011] Preferably, the positioning frame has a screw hole, and the locking screw is connected to the positioning frame body through the screw hole.

[0012] Preferably, the adjusting slide bar is slidably mounted on the handle rod via a movable slide groove, and the adjusting slide bar is restricted within the positioning frame by a locking screw.

[0013] Compared with the prior art, the beneficial effects of this utility model are: During operation, the operator must firmly grasp the second ring with their thumb, while simultaneously securing the first ring with their middle and index fingers. The force applied by the fingers drives the handle slip ring to move towards the rear end of the handle rod. As the handle slip ring moves backward, it pulls the steel cable body into the steel cable conduit. With the inward movement of the steel cable body, the snare body also moves into the steel cable conduit, thus enabling the snare body to perform grasping or cutting operations.

[0014] In this application, after tightening the locking screw, the adjusting slide is fixed in the positioning frame. By loosening the locking screw, the user can move the adjusting slide within the movable groove, thereby adjusting the initial distance between the first and second finger rings to accommodate different hand sizes and enhance grip comfort. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the drive component of this utility model; Figure 4 This is a schematic diagram of the adjustment mechanism of this utility model; Figure 5 This is a schematic diagram of the power connector of this utility model.

[0016] The diagram shows the following components: 1. Handle rod; 2. Connecting end; 3. Steel cable pipe; 4. Limiting block; 5. Drive assembly; 501. Sleeve body; 502. Connecting seat; 503. Power socket; 504. First finger ring; 505. Handle slip ring; 506. Component notch; 507. Steel cable body; 508. Locking screw; 509. Power connector; 6. Adjustment mechanism; 601. Movable slide; 602. Scale line; 603. Adjusting slide bar; 604. Positioning frame; 605. End cap; 606. Second finger ring; 607. Locking screw; 608. Anti-detachment block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a snare with a safe and secure handle, including a handle rod 1, a connecting end 2 fixedly installed at the front end of the handle rod 1, a steel cable pipe 3 fixedly installed on the connecting end 2, a limit stop 4 fixedly installed on the handle rod 1, a drive assembly 5 installed on the handle rod 1, and an adjustment mechanism 6 provided at the rear end of the handle rod 1. Through the cooperation of the drive assembly 5 and the adjustment mechanism 6, the initial distance between the first finger ring 504 and the second finger ring 606 can be adjusted, so that the handle is suitable for different sizes of hands and improves the comfort of use.

[0019] like Figure 2 , Figure 3 and Figure 5As shown, the drive assembly 5 includes a handle slip ring 505 slidably mounted on the handle rod 1. Two first finger rings 504 are fixedly mounted on the handle slip ring 505. A connecting seat 502 is fixedly mounted inside the handle slip ring 505. A steel cable body 507 is fixedly mounted on the connecting seat 502, and the steel cable body 507 is movably mounted inside the steel cable pipe 3. The drive assembly 5 also includes a power slot 503 fixedly mounted on the handle slip ring 505 and component notches 506 opened on both sides of the handle slip ring 505. A loop body 501 is fixedly mounted at the end of the steel cable body 507. A notch is opened on the handle rod 1. The connecting seat 502 extends into the handle rod 1 through the notch. The first finger rings 504 are movably mounted on the outside of the handle rod 1 through the handle slip ring 505. The connecting seat 502 is movably mounted inside the handle rod 1 through the handle slip ring 505.

[0020] Specifically, during use, the operator needs to firmly grip the second finger ring 606 on the handle with their thumb, while simultaneously using their middle and index fingers to firmly grip the first finger ring 504. Through the coordinated force of these three fingers, the handle slip ring 505 can be effectively driven to move along the handle rod 1. When the handle slip ring 505 begins to move towards the rear end of the handle rod 1, it pulls the connected steel cable body 507, causing it to move into the steel cable conduit 3. As the steel cable body 507 moves into the steel cable conduit 3, it further drives the connected snare body 501 to move inwards along with it, thus successfully completing the gripping or cutting function.

[0021] Furthermore, the bottom of the power connector 509 has a hole for fixing the connecting tube and a threaded hole for fixing the locking screw 508. After the connecting tube is inserted into the hole of the power connector 509, the locking screw 508 can be used to apply the corresponding torque from the bottom through the thread to fix the connecting tube in the power connector 509. This threaded fixing method is more secure and safe, avoiding the risk of instruments becoming unusable due to the connecting tube falling off due to improper fixing in clinical practice.

[0022] like Figure 2 and Figure 4 As shown, the adjustment mechanism 6 includes a movable slide groove 601 on the handle rod 1. An adjustment slide bar 603 is slidably installed in the movable slide groove 601. An anti-detachment block 608 is fixedly installed at one end of the adjustment slide bar 603, and an end cap 605 is fixedly installed at the other end of the adjustment slide bar 603. A second finger ring 606 is fixedly installed on the end cap 605. Positioning frames 604 are fixedly installed on both sides of the handle rod 1. A locking screw 607 is threaded on the positioning frame 604, and the adjustment slide bar 603 is slidably installed in the positioning frame 604. The handle rod 1 is provided with a scale line 602, and the scale line 602 is aligned vertically with the anti-detachment block 608. A screw hole is provided on the positioning frame 604, and the locking screw 607 is connected to the positioning frame 604 through the screw hole.

[0023] Specifically, after tightening the locking screw 607, the adjusting slide 603 is effectively and securely fixed within the internal structure of the positioning bracket 604, ensuring its position does not shift unexpectedly. Furthermore, when the user needs to adjust the handle, the locking screw 607 can be easily loosened. Once loosened, the user can freely move the adjusting slide 603 within the movable groove 601. This movement allows for flexible adjustment of the initial distance between the first ring 504 and the second ring 606. This adjustment mechanism is designed to accommodate different hand sizes, significantly improving user comfort and grip experience.

[0024] Working principle: During use, the thumb hooks onto the second ring 606, and the middle and index fingers hook onto the first ring 504 respectively. Applying force with these fingers moves the handle slip ring 505 towards the rear end of the handle rod 1. This movement pulls the steel cable body 507 into the steel cable conduit 3. The movement of the steel cable body 507 into the conduit 3 then moves the snare body 501 into the conduit 3, allowing the snare body 501 to perform the gripping or cutting function. Tightening the locking screw 607 fixes the adjusting slide bar 603 within the positioning frame 604. The user can then loosen the locking screw 607, allowing the adjustment slide bar 603 within the movable slide groove 601 to adjust the initial distance between the first ring 504 and the second ring 606, making the handle suitable for different hand sizes and improving user comfort.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A snare with a secure handle, comprising a handle rod (1), a connecting end (2) fixedly mounted on the front end of the handle rod (1), a steel cable pipe (3) fixedly mounted on the connecting end (2), and a limit stop (4) fixedly mounted on the handle rod (1), characterized in that: A drive assembly (5) is installed on the handle rod (1). The drive assembly (5) includes a handle slip ring (505) that is slidably installed on the handle rod (1). Two first finger rings (504) are fixedly installed on the handle slip ring (505). A connecting seat (502) is fixedly installed inside the handle slip ring (505). A steel cable body (507) is fixedly installed on the connecting seat (502). The steel cable body (507) is movably installed inside the steel cable pipe (3). An adjustment mechanism (6) is provided at the rear end of the handle rod (1).

2. The snare with a secure handle according to claim 1, characterized in that: The drive assembly (5) also includes a power slot (503) fixedly installed on the handle slip ring (505) and component notches (506) opened on both sides of the handle slip ring (505). A snare body (501) is fixedly installed at the end of the steel cable body (507). A locking screw (508) is threaded on the bottom of the handle slip ring (505). A power connector (509) is connected inside the power slot (503).

3. A snare with a secure and sturdy handle according to claim 2, characterized in that: The handle rod (1) has a notch, and the connecting seat (502) extends into the handle rod (1) through the notch.

4. A snare with a secure and sturdy handle according to claim 3, characterized in that: The first ring (504) is movably installed on the outside of the handle rod (1) via the handle slip ring (505), the connecting seat (502) is movably installed inside the handle rod (1) via the handle slip ring (505), the steel cable body (507) is fixed at the handle slip ring (505) via the connecting seat (502), and the end of the steel cable body (507) is connected to the power slot (503).

5. A snare with a secure and sturdy handle according to claim 4, characterized in that: The adjustment mechanism (6) includes a movable slide groove (601) on the handle rod (1), an adjustment slide bar (603) is slidably installed in the movable slide groove (601), an anti-detachment block (608) is fixedly installed at one end of the adjustment slide bar (603), an end cap (605) is fixedly installed at the other end of the adjustment slide bar (603), a second finger ring (606) is fixedly installed on the end cap (605), positioning frames (604) are fixedly installed on both sides of the handle rod (1), a locking screw (607) is threaded on the positioning frame (604), and the adjustment slide bar (603) is slidably installed in the positioning frame (604). The handle rod (1) is provided with a scale line (602), and the scale line (602) is aligned vertically with the anti-detachment block (608).

6. A snare with a secure and sturdy handle according to claim 5, characterized in that: The positioning frame (604) has a screw hole, and the locking screw (607) is connected to the positioning frame body (604) through the screw hole.

7. A snare with a secure and sturdy handle according to claim 6, characterized in that: The adjusting slide bar (603) is slidably mounted on the handle rod (1) via the movable slide groove (601), and the adjusting slide bar (603) is restricted within the positioning frame (604) by the locking screw (607).

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