CN219166509U - Suture tensioning device - Google Patents

Abstract

The present application relates to a suture tensioning device. The suture tensioning device comprises a guide rod, the suture tensioning device further comprises a first gear, a second gear, a connecting shaft and a driving handle, the first gear, the second gear, the connecting shaft and the driving handle are all arranged at the first end of the guide rod, the first gear and the second gear are meshed with each other, the driving handle is connected with the first gear to drive the first gear to rotate, the connecting shaft is connected with the second gear, and the connecting shaft can rotate to wind a wire belt guided by the guide rod. The suture tensioning device of the application is more labor-saving in operation compared with an existing structure.

Description

Suture tensioning device

Technical Field

The present application relates to the field of medical devices, and in particular to a suture tensioning device.

Background

Femoral/humeral implants often result in bone cleavage, resulting in failure of the procedure, and the use of strap binding or strap-to-plate bonding is one of the remedies.

The suture tensioning device can tension a suture tape attached to a tissue (such as a graft or a bone segment), one end of the suture tape is bound to the tissue when the suture tensioning device is used, the other end of the suture tape is connected with the suture tensioning device, the suture tape is tensioned through traction of the suture tensioning device, and a large tensioning force is required in the process of tensioning the suture tape so as to ensure fixation of the tissue.

In the existing suture tensioning device, the suture band is directly wound on the operating shaft of the handle, and an operator drives the operating shaft to rotate by rotating the handle, so that the suture band is tensioned. However, the operator needs a great force when turning the handle, which is inconvenient for the operator.

Disclosure of Invention

The utility model provides an aim at provides a suture overspeed device tensioner to solved current suture overspeed device tensioner, the tape winding is on the operating axis of handle directly, and the operator needs very big problem of strength when rotating the handle.

According to the application, there is provided a suture tensioning device, which comprises a guide bar, the suture tensioning device still includes first gear, second gear, connecting axle and actuating handle, first gear the second gear the connecting axle and actuating handle all sets up the first end of guide bar, first gear with second gear intermeshing, actuating handle connects first gear to the drive first gear is rotatory, the connecting axle is connected the second gear, the connecting axle can rotate in order to twine the winding warp the tape of guide bar guide.

In any of the above technical solutions, further, the driving handle includes a grip and a driving shaft, a first end of the driving shaft is connected to the first gear, a second end of the driving shaft is connected to the grip, and the driving shaft is perpendicular to the connecting shaft.

In any of the above technical solutions, further, the suture tensioning device further includes a rear case accommodating the first gear and the second gear, the connection shaft penetrates through a side wall of the rear case, a first end of the connection shaft is located outside the rear case, and the wire strap can be wound around the first end of the connection shaft.

In any of the above technical solutions, further, the suture tensioning device further includes a winding portion, the winding portion is connected to the first end of the connecting shaft, the ribbon can be wound around the winding portion, and the winding portion is provided with a hole portion.

In any of the above technical solutions, further, the suture tensioning device further includes an anti-rotation mechanism, the anti-rotation mechanism includes a telescopic member, the telescopic member passes through a side wall of the rear housing, the telescopic member can stretch out and draw back to limit rotation of the driving shaft, the rear housing has an extending direction, the extending direction of the rear housing is parallel to an axial direction of the driving shaft, the driving shaft passes through an end wall of the rear housing, and the axial direction of the driving shaft, the axial direction of the connecting shaft and the stretching direction of the telescopic member are perpendicular to each other.

In any of the above technical solutions, further, the rear housing is cylindrical, and the rear housing and the driving shaft are coaxially disposed.

In any of the above technical solutions, further, the anti-rotation mechanism further includes a first spring and a first limiting pin, the outer side portion of the driving shaft is provided with a plurality of protruding portions along the circumferential direction of the driving shaft, the protruding portions are equally spaced, the first end of the expansion piece is provided with a head portion, the second end of the expansion piece is located outside the rear shell, a first long-strip hole is formed in the middle of the expansion piece, the first limiting pin is slidably connected with the first long-strip hole, two ends of the first limiting pin are fixedly connected with the inner wall of the rear shell, the first spring is arranged between the first limiting pin and the head portion, and two adjacent protruding portions clamp the head portion when the first spring is in a reset state.

In any of the above technical solutions, further, the suture tensioning device further includes a front shell and a second spring, the front shell is cylindrical, the driving shaft passes through an end wall of the first end of the rear shell, the first end of the front shell is sleeved at the second end of the rear shell, the second spring is disposed in the front shell, the rear shell can compress the second spring, and a scale is disposed on an outer side portion of the rear shell or an outer side portion of the front shell.

In any of the above technical solutions, further, the suture tensioning device further includes a second limiting pin, two second elongated holes corresponding to each other are provided on the side wall of the rear shell, the second limiting pin is slidably connected with the two second elongated holes, and two ends of the second limiting pin are fixedly connected with the front shell.

In any of the above technical solutions, further, the first end of the guide rod is connected with the second end of the front shell, the second end of the guide rod is provided with a guide groove, the front shell is provided with a slot, and the center line of the guide groove, the center line of the slot and the center line of the hole are coplanar.

The beneficial effects of this application are:

according to the tightening device, the tensioning of the wire belt is achieved through the transmission fit of the first gear and the second gear, the direction of force can be changed through the application of the bevel gear, and compared with an existing structure, the tightening device reduces torque, saves more labor during operation, accelerates the tightening process and saves operation time.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic overall construction of a suture tensioning device according to an embodiment of the present application;

FIG. 2 illustrates a schematic installation of a first gear and a second gear according to an embodiment of the present application;

FIG. 3 shows a schematic view of the view of FIG. 1;

FIG. 4 shows a schematic cross-section A-A of FIG. 3;

fig. 5 shows a schematic view of the hidden front shell of fig. 1.

Icon: 100-a first gear; 200-a second gear; 301-connecting shafts; 302-a wire wrapping part; 3021-a hole portion; 401-a drive shaft; 402-handle; 501-telescoping member; 502-a first spring; 503-a first limiting pin; 504-handle; 505-head; 506-convex; 507-first elongated aperture; 600-backshells; 601-a first fixing hole; 602-a second stop pin; 603-a second elongate aperture; 700-front shell; 701-slotting; 702-a second fixing hole; 800-a guide rod; 801-a guide groove; 900-second spring.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatus, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the present disclosure. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but rather, obvious variations may be made upon an understanding of the present disclosure, other than operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided solely to illustrate some of the many possible ways of implementing the methods, devices, and/or systems described herein that will be apparent after a review of the disclosure of the present application.

In the entire specification, when an element (such as a layer, region or substrate) is described as being "on", "connected to", "bonded to", "over" or "covering" another element, it may be directly "on", "connected to", "bonded to", "over" or "covering" another element or there may be one or more other elements interposed therebetween. In contrast, when an element is referred to as being "directly on," directly connected to, "or" directly coupled to, "another element, directly on," or "directly covering" the other element, there may be no other element intervening therebetween.

As used herein, the term "and/or" includes any one of the listed items of interest and any combination of any two or more.

Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, component, region, layer or section discussed in examples described herein could also be termed a second member, component, region, layer or section without departing from the teachings of the examples.

For ease of description, spatially relative terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to another element would then be oriented "below" or "lower" relative to the other element. Thus, the term "above … …" includes both orientations "above … …" and "below … …" depending on the spatial orientation of the device. The device may also be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are intended to specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or groups thereof.

Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacture.

The features of the examples described herein may be combined in various ways that will be apparent after an understanding of the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the present disclosure.

The application provides a suture tensioning device to solve current suture tensioning device, the tape winding is on the operating shaft of handle directly, and the operator needs very big problem of strength when rotating the handle.

Femoral/humeral implants often result in bone cleavage, resulting in failure of the procedure, and the use of strap binding or strap-to-plate bonding is one of the remedies.

The suture tensioning device can tension a suture tape attached to a tissue (such as a graft or a bone segment), one end of the suture tape is bound to the tissue when the suture tensioning device is used, the other end of the suture tape is connected with the suture tensioning device, the suture tape is tensioned through traction of the suture tensioning device, and a large tensioning force is required in the process of tensioning the suture tape so as to ensure fixation of the tissue.

In the existing suture tensioning device, the suture band is directly wound on the operating shaft of the handle, and an operator drives the operating shaft to rotate by rotating the handle, so that the suture band is tensioned. However, the operator needs a great force when turning the handle, which is inconvenient for the operator.

In view of this, the present application provides a suture tensioning device, including guide bar 800, the suture tensioning device still includes first gear 100, second gear 200, connecting axle 301 and actuating handle, wherein, first gear 100, second gear 200, connecting axle 301 and actuating handle all set up the first end at guide bar 800, first gear 100 and second gear 200 intermeshing, actuating handle connects first gear 100 to drive first gear 100 rotation, connecting axle 301 connects second gear 200, connecting axle 301 can rotate in order to twine the tape that guides through guide bar 800.

When the suture tensioning device is used, an operator can lean against the bone structure of a patient at the second end of the guide rod, the bone plate is bound at one end of the wire belt, the other end of the wire belt is wound on the connecting shaft through the guide of the guide rod, and then the driving handle is operated to drive the first gear 100 to rotate, the rotation of the first gear 100 drives the second gear 200 to rotate, the rotation of the second gear 200 drives the rotation of the connecting shaft 301, and then the tensioning force of the wire belt is adjusted through the rotation of the connecting shaft 301. Here, the number of teeth of the first gear 100 and the second gear 200 may be set according to the need to reduce the torque required by the operator, and the specific number of gears of the two gears is not particularly limited as long as the second gear number/first gear number is greater than 1, i.e., the transmission ratio is greater than 1.

According to the tension device, the tension of the wire belt is achieved through the transmission fit of the first gear and the second gear, the direction of force can be changed through the application of the bevel gear, the torque required by a surgeon is reduced, meanwhile, the transmission ratio is improved, and the operation time is saved. Compared with the existing structure, the device reduces torque, saves more labor during operation, accelerates the tightening process and saves operation time. The specific structures of the driving handle, the first gear, the second gear, the connecting shaft, the driving shaft, the rear case, and the front case will be described in detail below.

As an example, as shown in fig. 2, the driving handle may include a grip 402 and a driving shaft 401, a first end of the driving shaft 401 is connected to the first gear 100, and a second end of the driving shaft 401 is connected to the grip 402, where the driving shaft 401 may be perpendicular to the connecting shaft 301 (the first gear 100 is perpendicular to the second gear 200), so that torque is reduced, operation is labor-saving, and a relative position of the grip 402 and the connecting shaft 301 is more consistent with manual force, thereby being more convenient for an operator to operate.

In the embodiment of the present application, as shown in fig. 1, the suture tensioning device may further include a rear case 600, the rear case 600 accommodates the first gear 100 and the second gear 200, the connection shaft 301 passes through a sidewall of the rear case 600, wherein a first end of the connection shaft 301 is located outside the rear case 600, a string can be wound around the first end of the connection shaft 301, the driving shaft 401 passes through an end wall of the rear case 600, and the handle 402 is located outside the rear case 600, further, a rear end of the handle may be connected with various handles such as a ratchet handle, so as to facilitate screwing of an operator.

Further, as shown in fig. 2, the suture tensioning device may further include a winding portion 302, the winding portion 302 is connected to the first end of the connecting shaft 301, the string may be wound around the winding portion 302, further, the winding portion 302 may be provided with a hole 3021, and an end portion of the string may be fixed to the hole 3021 and then wound around the winding portion 302.

In addition, the existing anti-rotation device is unreasonable in structure and design position, and once the tension is released by false touch, the tightening process is required to be repeated, so that the operation time is increased.

In view of this, as shown in fig. 1, the suture tensioning device of the present application may further include an anti-rotation mechanism, where the anti-rotation mechanism includes a telescopic member 501, the telescopic member 501 passes through a side wall of the rear housing 600, and the telescopic member 501 can stretch to limit rotation of the driving shaft 401, where the rear housing 600 has an extending direction, the extending direction of the rear housing 600 is parallel to an axial direction of the driving shaft 401, preferentially, the rear housing 600 is cylindrical (barrel), the rear housing 600 is coaxially disposed with the driving shaft 401, and an axial direction of the driving shaft 401, an axial direction of the connecting shaft 301, and a stretching direction of the telescopic member 501 are perpendicular to each other, so that the suture tensioning device is convenient to install, convenient to operate, labor-saving, more conforming to the manual force, and better in limiting effect of the anti-rotation mechanism.

As an example, as shown in fig. 1 and 4, the anti-rotation mechanism may further include a first spring 502 and a first limiting pin 503, where an outer side portion of the driving shaft 401 is provided with a plurality of protruding portions 506 along a circumferential direction of the driving shaft 401, the plurality of protruding portions 506 are disposed at equal intervals, a first end of the telescopic member 501 is provided with a head 505, a second end of the telescopic member 501 is located outside the rear case 600 and is connected with a handle 504, a first elongated hole 507 is provided in a middle portion of the telescopic member 501, the first limiting pin 503 passes through the first elongated hole 507, and two ends are fixedly connected with an inner wall of the rear case 600, for example, as shown in fig. 1 and 4, two first fixing holes 601 are provided in the inner wall of the rear case 600, two ends of the first limiting pin 503 are respectively limited in the two first fixing holes 601, the first spring 502 is disposed between the first limiting pin 503 and the head 505, and the two adjacent protruding portions 506 clamp the head 505 in a reset state of the first spring 502.

As shown in fig. 3 and 4, during operation, an operator pulls the handle 504 to disengage the concave part formed between the clamping block of the head 505 and the two convex parts 506, at this time, the first spring 502 is in a compressed state, at this time, the operator can screw the handle 402 to tighten the wire belt, when the wire belt is tightened, the operator releases the handle 504 to enable the clamping block of the head 505 to be clamped with the concave part formed between the two convex parts 506, at this time, the first spring 502 is in a reset state, at this time, the rotation preventing mechanism limits the rotation of the driving shaft 401, the rotation preventing mechanism adopts the concept of stretching limitation, and the stretching direction is perpendicular to the axial direction of the driving shaft 401, so that not only can the false touch release tension be prevented, but also the anti-rotation effect is better after the false touch.

In an embodiment of the present application, as shown in fig. 1, the suture tensioning device may further include a front case 700 and a second spring 900, where the front case 700 may be cylindrical, the driving shaft 401 passes through an end wall of the first end of the rear case 600, the first end of the front case 700 is sleeved on an outer side portion of the second end of the rear case 600, and the second spring 900 is disposed in the front case 700, that is, the second spring 900 is located between the second end of the front case 700 and an end surface of the rear case 600, and the rear case 600 is capable of compressing the second spring 900. Further, the outer side of the rear case 600 or the outer side of the front case 700 may be provided with graduations (graduation values may be in units of N) for an operator to judge the tension of the wire band.

As an example, as shown in fig. 5, the suture tensioning device may further include a second limiting pin 602, where the sidewall of the rear case 600 may be provided with two second elongated holes 603 corresponding to each other, the second limiting pin 602 passes through the two second elongated holes 603 (the second limiting pin can slide in the second elongated holes 603), two ends of the second limiting pin 602 are fixedly connected with the front case 700, for example, as shown in fig. 1, the sidewall of the front case 700 is provided with two second fixing holes 702 corresponding to each other, two ends of the second limiting pin 602 are respectively fixedly connected with the two second fixing holes 702 of the front case 700, when an operator operates, for example, to tension the wire, the rear case 600 may be pressed against the second spring 900, at this time, the operator may observe the readings of the scales to determine the tension of the wire, in one example, the outer side of the rear case 600 may be provided with scales, when the rear case 600 compresses the second spring 900, the corresponding scales of the end face of the front case 700 may be observed to determine the tension of the wire, and in the other example, the outer side of the rear case 600 may be provided with scales 900 when the second end face of the rear case 600 is compressed.

In addition, in the embodiment of the present application, as shown in fig. 1, the first end of the guide rod 800 is connected to the second end of the front shell 700, the second end of the guide rod 800 is provided with the guide groove 801, the front shell 700 is provided with the slot 701, where the slot 701 may penetrate the front shell 700, and the wire strap may sequentially pass through the guide groove 801, the slot 701 and the hole 3021 of the winding portion, preferably, the center line of the guide groove 801, the center line of the slot 701 and the center line of the hole 3021 are coplanar, so that the path of the wire strap may be ensured to be straight, not to be distorted, and further to ensure a certain tensioning force.

The application provides a suture tensioning device, including the guide bar, suture tensioning device still includes first gear, second gear, connecting axle and actuating handle, wherein, first gear, second gear, connecting axle and actuating handle all set up the first end at the guide bar, first gear and second gear intermeshing, actuating handle connects first gear to the rotation of drive first gear, the connecting axle is connected the second gear, the connecting axle can rotate in order to twine the tape of guide bar guide.

The utility model provides a suture overspeed device tensioner when using, the operator can be with the second end of guide bar against patient's bone structure, and the bone board is binded to the one end of line area, and the other end twines in the connecting axle through the direction of guide bar, later operates driving handle to drive first gear rotation, and the rotation of first gear drives the rotation of second gear, and the rotation of second gear drives the rotation of connecting axle, and then through the rotation of connecting axle, adjusts the tensioning force of line area. Here, the number of teeth of the first gear and the second gear may be set as required to reduce the torque required by the operator, and the specific gear numbers of the two gears are not particularly limited as long as the second gear number/first gear number is greater than 1, i.e., the gear ratio is greater than 1.

According to the tension device, the tension of the wire belt is achieved through the transmission fit of the first gear and the second gear, the direction of force can be changed through the application of the bevel gear, the torque required by a surgeon is reduced, meanwhile, the transmission ratio is improved, and the operation time is saved. According to the tightening device, the tensioning of the wire belt is achieved through the transmission fit of the first gear and the second gear, the direction of force can be changed through the application of the bevel gear, and compared with an existing structure, the tightening device reduces torque, saves more labor during operation, accelerates the tightening process and saves operation time.

Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present application, and are not intended to limit the scope of the present application, but the present application is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, the present application is not limited thereto. Any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the technical scope of the disclosure of the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A suture tensioning device comprises a guide rod and is characterized in that the suture tensioning device also comprises a first gear, a second gear, a connecting shaft and a driving handle,

the first gear, the second gear, the connecting shaft and the driving handle are all arranged at the first end of the guide rod;

the first gear is meshed with the second gear;

the driving handle is connected with the first gear to drive the first gear to rotate;

the connecting shaft is connected with the second gear,

the connection shaft is rotatable to wind the wire band guided through the guide bar.

2. The suture tensioning device of claim 1, wherein the drive handle comprises a grip and a drive shaft,

a first end of the driving shaft is connected with the first gear, and a second end of the driving shaft is connected with the handle;

the driving shaft is perpendicular to the connecting shaft.

3. The suture tensioning device of claim 2, further comprising a back shell,

the rear housing accommodates the first gear and the second gear;

the connecting shaft passes through the side wall of the rear shell,

the first end of the connecting shaft is positioned outside the rear shell;

the wire strap can be wound around the first end of the connecting shaft.

4. The suture tensioning device of claim 3, further comprising a wrap,

the winding part is connected with the first end of the connecting shaft;

the wire belt can be wound on the winding part;

the winding part is provided with a hole part.

5. The suture tensioning device of claim 3, further comprising an anti-rotation mechanism,

the anti-rotation mechanism comprises a telescopic piece, and the telescopic piece passes through the side wall of the rear shell;

the telescopic piece can be telescopic to limit the rotation of the driving shaft;

the rear housing has an extension direction and,

the extending direction of the rear shell is parallel to the axial direction of the driving shaft;

the drive shaft passing through an end wall of the rear housing;

the axial direction of the driving shaft, the axial direction of the connecting shaft and the telescopic direction of the telescopic piece are perpendicular to each other.

6. The suture tensioning device of claim 5, wherein the rear housing is cylindrical, the rear housing being coaxially disposed with the drive shaft.

7. The suture tensioning device of claim 5, wherein the anti-rotation mechanism further comprises a first spring and a first stop pin,

the outer side portion of the drive shaft is provided with a plurality of protruding portions in the circumferential direction of the drive shaft,

the convex parts are arranged at equal intervals;

the first end of the telescopic piece is provided with a head, and the second end of the telescopic piece is positioned outside the rear shell;

a first strip hole is arranged in the middle of the telescopic piece,

the first limiting pin is in sliding connection with the first strip hole;

the two ends of the first limiting pin are fixedly connected with the inner wall of the rear shell;

the first spring is arranged between the first limiting pin and the head part,

and when the first spring is in a reset state, the head is clamped by two adjacent convex parts.

8. The suture tensioning device of claim 4, further comprising a front housing and a second spring,

the front shell is cylindrical;

the drive shaft passing through an end wall of the first end of the rear housing;

the first end of the front shell is sleeved at the second end of the rear shell;

the second spring is disposed within the front housing,

the rear housing is capable of compressing the second spring;

the outer side of the rear shell or the outer side of the front shell is provided with scales.

9. The suture tensioning device of claim 8, further comprising a second stop pin,

two second strip holes corresponding to each other are formed on the side wall of the rear shell,

the second limiting pins are connected with the two second strip holes in a sliding manner;

and two ends of the second limiting pin are fixedly connected with the front shell.

10. The suture tensioning device of claim 8, wherein a first end of the guide rod is connected to a second end of the anterior shell;

the second end of the guide rod is provided with a guide groove;

the front shell is provided with a slot;

the center line of the guide groove, the center line of the slot and the center line of the hole part are coplanar.

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