Multi-stage positioning needle holder for digestive endoscope

Abstract

The utility model discloses a multi-stage positioning needle holder for a digestive endoscope. The multi-stage positioning needle holder comprises a handle, an outer tube, a tooth surface grabbing block and a multi-stage positioning mechanism. The tooth surface grabbing blocks of the device are designed to be diamond-shaped tooth blocks, micro-tooth structures are arranged on the surfaces of the tooth surface grabbing blocks, the clamping force on foreign matter is enhanced, and slipping is avoided. In addition, the grabbing blocks can be properly inclined and are fixed in a graded mode through the multi-stage positioning mechanism, flexible operation in a complex digestive tract environment is guaranteed, patient injuries are reduced, and the secondary injury risk is reduced. The handle is connected with the outer tube through the rotary joint, so that a doctor can easily adjust the angle of the needle holder, the operation difficulty and muscle fatigue are reduced, and the operation safety and success rate are improved.

Description

Technical Field

[0001] This utility model relates to the field of medical tool technology, and in particular to a multi-level positioning needle holder for digestive endoscopes. Background Technology

[0002] Digestive endoscopy is widely used in the treatment of gastrointestinal diseases, including the resection of early cancers and submucosal tumors, the removal of foreign bodies, and other minimally invasive procedures.

[0003] However, in these surgeries, endoscopists often face the challenges of suturing and repairing large wounds, which are technically difficult, time-consuming, and carry a high risk of patient injury. Traditional titanium clip suturing can not suture the intrinsic muscle layer, leading to increased postoperative bleeding, prolonged hospital stays, and large wounds requiring numerous clips, resulting in high costs. Needle holders or foreign body forceps are key tools for suturing large wounds in endoscopic surgery, primarily used to hold and fix the needle for surgical suturing techniques. Currently, foreign body forceps are often used instead in endoscopic procedures; however, existing foreign body forceps have certain limitations in this operation. For example:

[0004] 1. Poor operational flexibility: Existing foreign body forceps are typically designed as fixed structures, lacking the ability to be flexibly adjusted. In narrow or complex anatomical environments of the digestive tract, the angle and gripping force of the needle holder are difficult to control precisely. Furthermore, they require prolonged fixation by an assistant, which not only increases the difficulty of the operation but may also prolong the surgical time.

[0005] 2. Insufficient gripping stability: Traditional foreign body forceps mostly have flat or simple toothed gripping surfaces, which can easily lead to unstable gripping or slippage when gripping suture needles. This not only increases the risk of repeated operations during surgery but may also cause additional damage to the patient.

[0006] 3. Increased risk of secondary injury: Traditional foreign body forceps are difficult to operate precisely in the complex digestive tract environment, often requiring multiple attempts to successfully grasp the target tissue. These multiple attempts not only prolong the operation time but also increase the patient's pain and the risk of postoperative complications.

[0007] Therefore, how to improve the ease of operation and safety of the needle holder in digestive endoscopy and reduce secondary harm to patients has become the technical problem to be solved by this utility model. Utility Model Content

[0008] The technical problem solved by this utility model is to address the deficiencies in the prior art by providing a multi-level positioning needle holder for digestive endoscopy, thereby solving the problems of complex operation and insufficient safety of existing foreign body forceps mentioned in the background art.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0010] A multi-level positioning needle holder for digestive endoscopy includes a handle, an outer tube, a toothed gripper, and a multi-level positioning mechanism.

[0011] One end of the handle is connected to the outer tube via a multi-stage positioning mechanism, and one end of the outer tube is connected to a toothed gripper.

[0012] The toothed gripper includes a first flat-headed inclined gripper and a second flat-headed inclined gripper. The first flat-headed inclined gripper and the second flat-headed inclined gripper each contain mutually opposing inclined surfaces. Rhomboid toothed blocks are evenly distributed on the inclined surfaces. The toothed gripper is fixed to the other end of the outer tube by a multi-stage positioning mechanism.

[0013] The multi-level positioning mechanism includes an annular fixed seat and a graded buckle that cooperates with the annular fixed seat. The annular fixed seat is fixedly connected to the other end of the outer tube, and the graded buckle is set on the handle to grade and fix the toothed gripper in different bending states.

[0014] The specific implementation of the graded buckle setting on the handle for graded fixing of the toothed gripper in different bending states is as follows: one end of two linkage rods is fixedly connected to two grippers included in the graded fixing toothed gripper, and the other end of the linkage rod is fixedly connected to one end of the positioning rod, while the other end of the positioning rod is pressed against the annular fixing seat; when the handle is connected to the annular mounting seat through the graded buckle, the different positions of the graded buckle and the annular mounting seat achieve different clamping forces to change the different bending states of the graded fixing toothed gripper.

[0015] As a further embodiment of this utility model, it also includes a positioning rod and two linkage rods. The surface of the rhomboid toothed block is provided with a micro-tooth structure, which is used to improve the stability of the needle holder when holding foreign objects to prevent the foreign objects from slipping off.

[0016] As a further embodiment of this utility model, the graded buckle includes two or more limiting protrusions, which are fixed on the handle. The inner side of the annular fixing seat is provided with a limiting groove that cooperates with the limiting protrusions. One of the limiting protrusions in the graded buckle is engaged with the annular fixing seat through the limiting groove.

[0017] As a further embodiment of this utility model, the limiting protrusion and the handle are an integral structure.

[0018] As a further embodiment of this utility model, the limiting protrusion and each corner of the handle are respectively provided with a rounded transition.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This utility model adopts a diamond-shaped toothed block design with micro-tooth structures on the surface of the toothed block, which can effectively enhance the clamping force on foreign objects and prevent them from slipping during operation. At the same time, the toothed gripper's ability to tilt and grade fixation ensures flexible adaptation in complex digestive tract environments, reducing damage to the patient's digestive tract and thus significantly reducing the risk of secondary injury during surgery.

[0021] 2. By setting a rotating joint at the connection between the handle and the outer tube, the doctor can easily adjust the angle of the needle holder without frequently changing hand gestures. This not only reduces the difficulty of operation, but also effectively relieves muscle fatigue caused by long-term surgery, and improves the safety and success rate of surgery.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 for Figure 1 Enlarged schematic diagram of part A.

[0026] Figure 3 for Figure 2 Enlarged schematic diagram of part B.

[0027] The reference numerals and names in the figure are as follows:

[0028] 1. Handle, 2. Outer tube, 3. Toothed gripper, 4. Multi-stage positioning mechanism, 5. Diamond toothed block, 6. Ring-shaped fixing seat, 7. Graded buckle, 8. Micro-tooth structure, 9. Linkage rod, 10. First flat-headed inclined gripper, 11. Second flat-headed inclined gripper, 12. Positioning rod, 13. Ring rod, 15. and fastener, 16. Detailed Implementation

[0029] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Please see Figure 1 —3, In this embodiment of the present invention, a multi-level positioning needle holder for a digestive endoscope includes a handle 1, an outer tube 2, a toothed gripper 3, and a multi-level positioning mechanism 4; one end of the handle 1 is connected to the outer tube 2, and one end of the outer tube 2 is connected to the toothed gripper 3; the toothed gripper 3 includes a first flat-headed inclined gripper 11 and a second flat-headed inclined gripper 12, the first flat-headed inclined gripper 11 and the second flat-headed inclined gripper 12 respectively include mutually opposing inclined surfaces, and rhomboid teeth 6 are evenly distributed on the inclined surfaces; the toothed gripper 3 is fixed to the other end of the outer tube 2 by the multi-level positioning mechanism 4; the multi-level positioning mechanism 4 includes an annular fixing seat 7 and a graded buckle 8 that cooperates with the annular fixing seat 7; the annular fixing seat 7 is fixedly connected to the other end of the outer tube 2, and the graded buckle 8 is set on the handle 1 for graded fixing of different bending states of the toothed gripper 3.

[0031] The specific implementation of the graded buckle 8 on the handle 1 for graded fixing of the toothed gripper 3 in different bending states is as follows: one end of two linkage rods 10 is fixedly connected to two grippers included in the graded fixing toothed gripper 3, and the other end of the linkage rod 10 is fixedly connected to one end of the positioning rod 13, and the other end of the positioning rod 13 is pressed against the annular fixing seat 7; when the handle 1 is connected to the annular fixing seat 7 by the graded buckle 8, the different positions of the graded buckle 8 and the annular fixing seat 7 achieve different clamping forces to change the different bending states of the graded fixing toothed gripper 3.

[0032] The linkage rod 10 and the positioning rod 13 are rotatably connected. The design of the step-locking buckle 8 and the annular fixing seat 7 allows the bending state of the toothed gripper 3 to be precisely controlled by adjusting the position of the step-locking buckle 8. Specifically, when the step-locking buckle 8 on the handle 1 engages with the limiting groove of the annular fixing seat 7 at different positions, the action is transmitted to the positioning rod 13 through the linkage rod 10, thereby changing the force applied by the positioning rod 13 to the toothed gripper 3.

[0033] One end of the linkage rod 10 is fixedly connected to the two grippers of the graded fixed tooth surface gripper 3, and the other end is connected to the positioning rod 13. The positioning rod 13 is tightly attached to the inner side of the annular fixing seat 7. When the graded latch 8 is engaged in different positions, the linkage rod 10 is forced to rotate or move, thereby pulling or pushing the positioning rod 13, causing the two grippers of the tooth surface gripper 3 to bend to different degrees. Since the positioning rod 13 and the linkage rod 10 are connected by a rotational fit, this design allows the grippers to be adjusted in angle while maintaining stability. This force transmission mechanism, achieved through the engagement of the graded latch 8 and the annular fixing seat 7 at different positions, ensures that the tooth surface gripper 3 can achieve the required bending state through simple adjustments in different operating environments, thereby better adapting to various complex endoscopic operation requirements.

[0034] The surface of the rhomboid toothed block 6 is provided with a micro-tooth structure 9, which is used to improve the stability of the needle holder when gripping foreign objects to prevent the foreign objects from slipping. The graded buckle 8 includes two or more limiting protrusions, which are fixed to the handle 1. The inner annular side of the annular fixing seat 7 is provided with a limiting groove that mates with the limiting protrusions. One of the limiting protrusions in the graded buckle 8 is engaged with the annular fixing seat 7 through the limiting groove. The limiting protrusions and the handle 1 are an integral structure. The corners of the limiting protrusions and the handle 1 are respectively provided with arc transitions; and the handheld end of the handle 1 has an annular handheld component, which is composed of an annular rod 15 and a fastener 16. The two ends of the annular rod 15 and the fastener 16 are fastened together by the fastener 16.

[0035] In the extended implementation, the gripper surface is equipped with rhomboid teeth 6 and micro-tooth structures 9, significantly enhancing the clamping force and making it suitable for foreign body removal and suturing of large wounds during endoscopic surgery. The rotary joint design of the handle 1 and the outer tube 2 allows doctors to easily adjust the instrument angle, reducing operational difficulty and fatigue.

[0036] For example, in the clinical operating room of the endoscopy center of the gastroenterology department of a top-tier hospital, a middle-aged male patient was diagnosed with a submucosal mass (stromal tumor) in the stomach and needed to undergo endoscopic full-thickness resection. Due to the deep location of the mass, the wound would be large after full-thickness resection, making traditional endoscopic titanium clip suturing difficult during the procedure and resulting in a high rate of postoperative bleeding complications.

[0037] Against this backdrop, the multi-level positioning needle holder for digestive endoscopy of this invention was introduced and applied in this surgery. After the surgery began, the surgeon used the endoscope to clamp the needle with the holder and guide it to the wound site. Because the needle holder features a diamond-shaped toothed block 6 design with micro-tooth structures 9 on its surface, it significantly enhances the gripping force and stability of the needle. The surgeon can flexibly control the angle and direction of the needle holder through the outer tube 2, precisely adjusting the needle direction to align with the wound at a suitable angle for suturing, thereby effectively improving the success rate and safety of the surgery.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] 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 exemplary 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.

Claims

1. A multi-level positionable needle holder for a digestive endoscope, characterized by: Handle, outer tube, tooth surface grab block and multi-stage positioning mechanism are included. One end of the handle is connected with the outer tube through the multi-stage positioning mechanism, and one end of the outer tube is connected with the tooth surface grab block. The tooth surface grab block includes a first flat head inclined surface grab block and a second flat head inclined surface grab block, and each of the first flat head inclined surface grab block and the second flat head inclined surface grab block includes mutually opposite inclined surfaces, and the inclined surfaces are uniformly distributed with rhombic tooth blocks. The multi-stage positioning mechanism includes an annular fixing seat and a staged buckle matched with the annular fixing seat, the annular fixing seat is fixedly connected to the other end of the outer tube, and the staged buckle is arranged on the handle for grading fixing different bending states of the tooth surface grab block. The specific implementation mode of the staged buckle arranged on the handle for grading fixing different bending states of the tooth surface grab block is that one end of two linkage rods is respectively fixedly connected to two grab blocks included by the staged fixing tooth surface grab block, the other end of the linkage rod is fixedly connected to one end of a positioning rod, and the other end of the positioning rod is abutted against the annular fixing seat.

2. The multi-level positionable needle holder for digestive endoscopes according to claim 1, wherein When the handle is connected with the annular mounting seat through the staged buckle, the abutting force is changed by the connection of different positions of the staged buckle with the annular mounting seat to change the different bending states of the staged fixing tooth surface grab block.

3. The multi-level positionable needle holder for digestive endoscopes of claim 1, wherein, The positioning rod and the two linkage rods are further included, the surface of the rhombic tooth block is provided with a micro-tooth structure, and the micro-tooth structure is used to improve the stability of the needle holder when holding foreign matters to avoid the foreign matters from slipping off.

4. The multi-level positionable needle holder for digestive endoscopes according to claim 3, wherein The staged buckle includes two or more limiting protrusions, the limiting protrusions are fixed on the handle, the inner side of the annular fixing seat is provided with limiting clamping grooves matched with the limiting protrusions, and one of the limiting protrusions in the staged buckle is connected with the annular fixing seat through the limiting clamping grooves.

5. The multi-level positionable needle holder for digestive endoscopes according to claim 3, wherein The limiting protrusions and the handle are in an integral structure. Each corner of the limiting protrusions and the handle is provided with a circular arc transition.

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