CN219439322U

CN219439322U - Wire grabbing pliers

Info

Publication number: CN219439322U
Application number: CN202223490009.4U
Authority: CN
Inventors: 陈侯磬; 江长青; 惠明; 罗鹏; 欧阳建安; 陈国飞; 郭伟明; 谢小肖; 何光联
Original assignee: Union Shenzhen Hospital of Huazhong University of Science and Technology
Current assignee: Union Shenzhen Hospital of Huazhong University of Science and Technology
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-08-01
Anticipated expiration: 2032-12-23

Abstract

The utility model belongs to the field of medical equipment, and provides a wire grabbing clamp, which comprises the following components: two clamp arms which are hinged in a crossed manner through a pin shaft; one end of each clamp arm is provided with an operation part, the middle part is provided with a shaft hole for the pin shaft to be inserted, and the other end is provided with a wire grabbing part; the line grabbing parts comprise extension sections, the extension sections of the two line grabbing parts are arranged oppositely, cross-shaped grooves are formed in the end faces of the extension sections, the two cross-shaped grooves are arranged oppositely, and a plurality of convex ribs are arranged on the two cross-shaped grooves; the part of the end surface of the extension section outside the cross-shaped groove is provided with a plurality of gripping teeth which are arranged at intervals; wherein the gripping teeth on the end surfaces of the two extension sections are engaged in a staggered manner. According to the wire grabbing clamp provided by the embodiment of the utility model, when wire grabbing operation is carried out, a suture can be clamped into one or more notches, so that the wire grabbing clamp can be firmly grabbed under the condition that the suture is perpendicular to, parallel to or obliquely crossed with the length direction of the clamp arm, the stability of wire grabbing is improved, and the application range is expanded.

Description

Wire grabbing pliers

Technical Field

The utility model belongs to the field of medical instruments, and particularly relates to a wire grabbing clamp.

Background

The arthroscopic surgery is to insert a lens metal tube with an illumination device into a joint cavity through a small incision, enlarge the internal structure of the joint cavity on a monitor, observe the pathological conditions and parts in the joint cavity, and simultaneously perform comprehensive inspection and cleaning of the pathological parts under television monitoring.

When arthroscopic surgery is implemented, suturing is often needed, and the operation such as grabbing, pulling and the like on a suture is very difficult due to the narrow operation space.

In order to solve the above problems, a wire grasping forceps has been developed, which can be used to penetrate into an operation area and grasp a suture by a grasping head provided at an end thereof.

However, when grasping a suture using existing suture grasping forceps, it is necessary to accurately grasp the relative position of the grasping head and the suture, and when it is difficult to make the grasping head perform a grasping operation in a direction perpendicular to the suture, the suture is often not firmly grasped. Therefore, the existing wire grabbing pliers have the problems of small application range and poor grabbing effect.

Disclosure of Invention

The utility model provides a pair of wire grabbing pliers, which aims to solve the problems that when the existing wire grabbing pliers are used for grabbing a suture, the relative position of a grabbing head and the suture needs to be accurately mastered, and when the grabbing head is difficult to grab in the direction perpendicular to the suture, the suture cannot be firmly grabbed, so that the application range is small and the grabbing effect is poor.

In a first aspect, the present utility model provides a wire stripper comprising:

two clamp arms which are hinged in a crossed manner through a pin shaft;

one end of each clamp arm is provided with an operation part, the middle part of each clamp arm is provided with a shaft hole for inserting the pin shaft, and the other end of each clamp arm is provided with a wire grabbing part;

the wire grabbing parts comprise extension sections, the extension sections of the two wire grabbing parts are arranged oppositely, and cross-shaped grooves are formed in the end faces of the extension sections;

a plurality of gripping teeth which are arranged at intervals are arranged at the part outside the cross-shaped groove on the end surface of the extension section;

wherein the tooth tips of the grabbing teeth on the end surfaces of the two extension sections are meshed in a staggered manner.

Optionally, the cross-shaped groove comprises a semi-cylindrical transverse groove and a semi-cylindrical vertical groove which are arranged in a crossing way and communicated with each other.

Optionally, a plurality of convex ribs are arranged in the semicircular column type transverse groove and the semicircular column type vertical groove.

Optionally, the length direction of the convex ribs is consistent with the diameter direction of the semi-cylindrical transverse groove and the semi-cylindrical vertical groove.

Optionally, the plurality of ribs are arranged at intervals along the central axis direction of the semi-cylindrical transverse groove and the semi-cylindrical vertical groove.

Optionally, a fillet transition surface is arranged on the inner wall of the joint of the semi-cylindrical transverse groove and the semi-cylindrical vertical groove.

Optionally, the diameters of the semi-cylindrical transverse groove and the semi-cylindrical vertical groove are smaller than or equal to 0.35mm. Optionally, an avoidance groove is arranged between the shaft hole of each clamp arm and the extension section.

According to the wire grabbing pliers provided by the embodiment of the utility model, the two pliers arm operation parts are operated to be close to each other, so that the two wire grabbing parts are also close to each other until the staggered grabbing teeth on the end surfaces of the two extension parts are meshed, and the two extension parts are utilized to clamp the suture, so that the suture is grabbed; be equipped with the cross recess on the terminal surface of extension, when grabbing the line operation, the suture can block into one of them or more notch for grab the line pincers and can be firmly snatched under the circumstances that suture and the length direction of pincers arm are perpendicular, parallel or the skew, thereby can need not to adjust the gesture of grabbing the line pincers in forcing the space of zebra and can grab the line operation, promoted the stability of grabbing the line, expanded application scope, satisfied more use needs.

Drawings

FIG. 1 is a perspective view of a wire taker provided by the present utility model;

FIG. 2 is a perspective view of one jawarm of the wire grasping forceps provided by the utility model;

fig. 3 is an enlarged view at III in fig. 2.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model. Furthermore, it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "left," "right," "horizontal," "top," "bottom," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize applications of other processes and/or usage scenarios for other materials.

Example 1

Referring to fig. 1-3, the present embodiment provides a wire grabbing clamp, which includes:

two jawarms 100 cross-hinged by pins 140;

one end of each clamp arm 100 is provided with an operation part 110, the middle part is provided with a shaft hole for inserting a pin shaft 140, and the other end is provided with a wire grabbing part 120;

the wire grabbing parts 120 comprise extension sections 121, the extension sections 121 of the two wire grabbing parts 120 are oppositely arranged, and cross-shaped grooves 122 are formed in the end faces of the extension sections 121;

the part of the end surface of the extension section 121 except the cross-shaped groove 122 is provided with a plurality of gripping teeth 123 which are arranged at intervals;

wherein the tips of the gripping teeth 123 on the end faces of the two extension sections 121 are in a staggered engagement.

In this embodiment, the two jawarms 100 may be identical components, the wire grabbing pliers are assembled by the two jawarms 100, specifically, the assembling process may be regarded as that one of the two jawarms 100 is stationary, the other of the two jawarms 100 is obtained by copying with the one of the two jawarms 100 as a template, the other of the two jawarms 100 is rotated 180 ° about its longitudinal direction as a central axis, and then the other of the two jawarms 100 is moved, so that the shaft hole provided in the middle of the other of the two jawarms 100 is aligned with the shaft hole provided in the middle of the stationary jawarms 100 concentrically, and the pin 140 simultaneously penetrates through the two shaft holes, and at this time, the two of the two jawarms 100 form cross-hinge.

The following description will take one of the jawarms 100 as an example. The jawarm 100 may be a continuous member that is generally in the shape of a dogleg, and in particular, the jawarm 100 may be divided into three sections, wherein a central section is provided with a shaft hole into which the pin 140 is inserted, a distal section extends at an angle to a central section to form the grasping portion 120, and similarly, a proximal section extends at an angle to a central section to form the operating portion 110, and the distal grasping portion 120 is generally parallel to the proximal operating portion 110, thereby optimizing the torque design and enabling the operator to better grasp the amount of force applied when grasping the wire using the operating portion 110.

The wire grasping portion 120 includes an extension section 121 perpendicular to the jawarm 100, and the extension section 121 is formed to extend in a direction approaching the other jaw, that is, when the two wire grasping portions 120 approach each other, end surfaces of the two extension sections 121 thereon may finally form abutment. The extending section 121 is used for contacting and positioning and grabbing a suture, specifically, when the suture grabbing pliers are used, an operator holds the operating section 110, moves the suture grabbing section 120 to a position where forward projection of the end face of the extending section 121 can cover the suture, at this time, external force is applied to enable the two operating sections 110 to be close to each other, the two suture grabbing sections 120 at the far end are driven to be close to each other until staggered grabbing teeth 123 on the end faces of the two extending sections 121 are meshed, clamps the suture between the two operating sections, and enables the suture to be snapped, so that positioning and grabbing of the suture are achieved.

Further, the end surface of the extension section 121 is provided with a cross-shaped groove 122, specifically, the center of the cross-shaped groove 122 is located approximately at the geometric center of the end surface of the extension section 121, in this embodiment, the extension section 121 is described as a cuboid, it can be understood that the end surface of the cuboid extension section 121 is rectangular or square, the rectangular or square has two opposite sides parallel to the length direction of the jawarm 100, and in the cross-shaped groove 122, the groove in the transverse direction vertically penetrates through the two opposite sides; similarly, the rectangle or square has two opposite sides perpendicular to the length of the jawarm 100, and the vertical groove extends perpendicularly through the two opposite sides in the cross-shaped groove 122. The shape of the grooves may be set according to practical use requirements, for example, cylindrical grooves, prismatic grooves, gourd-shaped grooves, etc., and are not particularly limited herein.

When the suture grasping forceps are used for grasping the suture, the suture can be clamped into the cross-shaped groove 122 and firmly grasped. Specifically, the same suture can be clamped into any one of the grooves in the transverse direction or the vertical direction, and can also be clamped into two grooves in the transverse direction and the vertical direction at the same time. For example, when grasping, the suture is in a configuration substantially perpendicular to the length of the jawarm 100, and the suture can be snapped into the grooves on both parallel pairs of sides simultaneously; when the suture is in a configuration substantially parallel to the length of the jawarm 100, the suture may be snapped into a groove on only one side of the distal end; when the suture is positioned at an angle to the length of the jawarm 100, the suture may be simultaneously snapped into one of the grooves on one side of the distal end and the grooves on the two parallel pairs. Therefore, when the suture is grabbed, the gesture of the suture grabbing part 120 does not need to be adjusted according to the position of the suture, so that the suture can be firmly grabbed in a cramped space, namely, the suture grabbing part 120 is difficult to move, the stability of the suture grabbing is improved, the application range is expanded, and more use requirements are met.

According to the wire grabbing pliers provided by the embodiment of the utility model, the two wire grabbing parts 120 can be mutually close until the grabbing teeth 123 on the end surfaces of the two extension parts are meshed by operating the two pliers arms 100 and the operating parts 110 to mutually close, so that the suture is clamped by the grabbing teeth 123 on the end surfaces of the two extension parts, and the suture is grabbed; the end face of the extension section 121 is provided with the cross-shaped groove 122, when the thread grabbing operation is performed, the suture can be clamped into one or more notches, so that the thread grabbing pliers can be firmly grabbed under the condition that the suture is perpendicular, parallel or oblique to the length direction of the pliers arm 100, the thread grabbing operation can be performed without adjusting the posture of the thread grabbing pliers in a narrow space, the stability of the thread grabbing operation is improved, the application range is expanded, and more use requirements are met.

Example two

Referring to fig. 1-3, the cross-shaped groove 122 of the present embodiment includes a semi-cylindrical transverse groove 1221 and a semi-cylindrical vertical groove 1222 that are disposed in a crossing manner and are mutually communicated.

It will be readily appreciated that the axis of the semi-cylindrical transverse slot 1221 is generally perpendicular to the axis of the semi-cylindrical vertical slot 1222, and that the junction of the semi-cylindrical transverse slot 1221 and the semi-cylindrical vertical slot 1222 is generally at the midpoint of the two, since in use, most of the time, the suture is grasped using the distal-most end of the grasping forceps, in some embodiments, the semi-cylindrical transverse slot 1221 may be offset distally by a distance relative to the midpoint of the semi-cylindrical vertical slot 1222 so that the suture is more easily snapped into it.

In this embodiment, the semi-cylindrical transverse groove 1221 and the semi-cylindrical vertical groove 1222 are semi-cylindrical grooves formed on the end surface of the extension section 121, that is, the bottom surface and the side wall of the grooves are continuous cambered surfaces, so as to adapt to the appearance shape of the suture, so that the suture can be better attached to the bottom surface and the side wall of the grooves when being clamped, and the firmness and the stability of the thread grabbing are improved.

In the present embodiment, "horizontal" and "vertical" refer to the relative positions of the semi-cylindrical transverse groove 1221 and the semi-cylindrical vertical groove 1222 that are substantially perpendicular to each other, and are not to be considered as being converted into the semi-cylindrical vertical groove 1222 when the semi-cylindrical transverse groove 1221 is not always in a direction parallel to the direction of gravity, i.e., the "vertical" direction, because the semi-cylindrical transverse groove 1221 is not always in a direction parallel to the direction of gravity in the actual use or the placed state of the wire pliers.

In some embodiments, the cross-shaped groove 122 includes intersecting V-shaped transverse grooves and V-shaped vertical grooves. When the suture line is clamped into the V-shaped groove, the side wall of the V-shaped groove can generate larger friction force on the contact surface with the suture line, so that the suture line is more firm to grasp.

Example III

Referring to fig. 1-3, a plurality of ribs 124 are disposed in each of the semi-cylindrical transverse slot 1221 and the semi-cylindrical vertical slot 1222 of the present embodiment.

According to the wire grabbing pliers provided by the embodiment of the utility model, the plurality of convex ribs 124 are arranged in the semicircular column transverse grooves 1221 and the semicircular column vertical grooves 1222, so that when a sewing wire is clamped into the grooves, the sewing wire is difficult to slide under the action of friction force generated between the sewing wire and the convex ribs 124, and the wire grabbing stability is further improved.

Example IV

Referring to fig. 1-3, the length direction of the ribs 124 of the present embodiment is identical to the diameter direction of the semi-cylindrical transverse grooves 1221 and the semi-cylindrical vertical grooves 1222.

Further, the ribs 124 are arranged along the central axis of the semi-cylindrical transverse slot 1221 and the semi-cylindrical vertical slot 1222 at intervals.

It will be readily appreciated that the length of the ribs 124 in the semi-cylindrical transverse slot 1221 is substantially perpendicular to the length of the ribs 124 in the semi-cylindrical vertical slot 1222.

According to the wire grabbing pliers provided by the embodiment of the utility model, the length direction of the convex ribs 124 is consistent with the diameter directions of the semi-cylindrical transverse grooves 1221 and the semi-cylindrical vertical grooves 1222, and the convex ribs 124 are arranged at intervals along the central axis directions of the semi-cylindrical transverse grooves 1221 and the semi-cylindrical vertical grooves 1222, when a suture is clamped in the length direction of the groove, the suture is difficult to slide along the length direction of the suture under the action of friction force generated between the suture and the grabbing teeth 123, so that the firmness of the grabbing wire is ensured; when a plurality of sutures are clamped into the same groove, the sutures can be bent into the gaps between the gripping teeth 123, so that the space is saved, and more sutures can be accommodated in the groove.

Example five

Referring to fig. 1-3, the inner wall of the connection between the semi-cylindrical transverse slot 1221 and the semi-cylindrical vertical slot 1222 of the present embodiment is provided with a rounded transition surface.

It is easy to understand that the connection between the semi-cylindrical transverse groove 1221 and the semi-cylindrical vertical groove 1222 is the cross-shaped groove 122, and four right angles in the cross are all through the fillet transition surface at each right angle, so that sharp edges and corners are cancelled, breakage and even fracture caused by friction between the suture and the edges and corners are avoided, surgical accidents are caused, the condition of damaging human body is caused, the success rate of surgery is improved, and the safety of surgery is ensured.

Example six

Referring to fig. 1-3, the diameters of the semi-cylindrical transverse slot 1221 and the semi-cylindrical vertical slot 1222 of the present embodiment are less than or equal to 0.35mm.

In this embodiment, the suture grasping forceps are suitable for sutures with various sizes, especially for sutures with diameters of about 0.35mm, and the diameters of the semi-cylindrical transverse groove 1221 and the semi-cylindrical vertical groove 1222 are smaller than or equal to 0.35mm, that is, smaller than or equal to the diameters of the sutures, so that the sutures can be firmly grasped in the grooves, and the situations that the sutures are not firmly fixed due to oversized grooves and slip in the grooves, and the surgical effect is affected, are avoided.

Example seven

Referring to fig. 1-3, an avoidance groove 130 is provided between the shaft hole and the extension 121 of each jawarm 100 in the present embodiment.

According to the wire grabbing pliers provided by the embodiment of the utility model, the avoidance groove 130 is formed between the shaft hole of each pliers arm 100 and the extension section 121, and the two pliers arms 100 are in cross hinge connection, so that the two avoidance grooves 130 form an avoidance space, and the wire grabbing pliers can avoid the traction wire to grab the wire through the avoidance space when an operation is carried out, so that the traction wire is prevented from being clamped when the wire grabbing pliers grab the suture, and the safety of the operation is ensured.

Example eight

Referring to fig. 1-3, an anti-slip layer is disposed on an outer surface of the operating portion 110.

According to the wire grabbing pliers provided by the embodiment of the utility model, the anti-slip layer is arranged on the outer surface of the operating part 110, so that when an operator grips the operating part 110 to grab a wire, the anti-slip layer can increase friction force, so that the gripping is more stable, and the situation that the wire grabbing pliers slide down to cause danger is avoided.

In the description of the present specification, reference to the terms "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, the foregoing description of the preferred embodiment of the utility model is provided for the purpose of illustration only, and is not intended to limit the utility model to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. A wire-grabbing clamp, comprising:

two clamp arms which are hinged in a crossed manner through a pin shaft;

the line grabbing parts comprise extension sections, the extension sections of the two line grabbing parts are arranged oppositely, cross-shaped grooves are formed in the end faces of the extension sections, the two cross-shaped grooves are arranged oppositely, and a plurality of convex ribs are arranged on the two cross-shaped grooves;

wherein the gripping teeth on the end surfaces of the two extension sections are engaged in a staggered manner.

2. The wire grasping forceps according to claim 1, wherein the cross-shaped groove includes a semi-cylindrical transverse groove and a semi-cylindrical vertical groove which are disposed in a crossing manner and are communicated with each other.

3. The wire grasping forceps according to claim 2, wherein the length direction of the plurality of ribs is identical to the diameter direction of the semi-cylindrical transverse groove and the semi-cylindrical vertical groove.

4. The wire grasping forceps according to claim 3, wherein the plurality of ribs are arranged at intervals along a central axis direction of the semi-cylindrical horizontal groove and the semi-cylindrical vertical groove.

5. The wire grabbing clamp as claimed in claim 2, wherein the inner wall of the junction of the semi-cylindrical transverse slot and the semi-cylindrical vertical slot is provided with a rounded transition surface.

6. The wire taker according to any one of claims 2 to 5, wherein the diameter of the semi-cylindrical transverse groove and the semi-cylindrical vertical groove is less than or equal to 0.35mm.

7. The wire grasping forceps according to claim 1, wherein the cross-shaped groove comprises a V-shaped transverse groove and a V-shaped vertical groove which are arranged in a crossing manner and are communicated with each other.

8. The wire grasping forceps according to claim 1, wherein a relief groove is provided between the shaft hole and the extension section of each of the forceps arms.