CN116269568B

CN116269568B - push knot tensioner

Info

Publication number: CN116269568B
Application number: CN202310584560.5A
Authority: CN
Inventors: 战勃宏
Original assignee: Hangzhou Feichong Biological Science Co ltd
Current assignee: Hangzhou Feichong Biological Science Co ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-09-01
Anticipated expiration: 2043-05-23
Also published as: CN116269568A

Abstract

The application relates to a knot pushing tensioner which comprises a tension testing mechanism, a knot pushing piece and a thread cutting piece, wherein the proximal end of the knot pushing piece is connected with the tension testing mechanism, the distal end of the knot pushing piece is provided with a limit part and a thread hanging part which are matched with each other, the thread cutting piece is sleeved on the knot pushing piece, the distal end of the thread cutting piece is provided with a cutting edge, and the thread cutting piece can move along the knot pushing piece and cut a suture positioned on the thread hanging part through the cutting edge. The knot pushing tensioner provided by the application has the knot pushing function and the knot fixing and tensioning function, and simultaneously can cut off the redundant parts of the suture line through the thread cutting piece without changing the instrument under the condition of keeping the preset tension, so that the knot pushing tensioner is convenient to use integrally, the operation efficiency is effectively improved, and the fixing effect is ensured.

Description

Push knot tensioner

Technical Field

The application relates to the technical field of medical appliances, in particular to a push-junction tensioner.

Background

In the bone joint surgery process, the bone tissues after the surgery are generally bound and fixed by using medical sutures, and the sutures are knotted, tensioned and sheared after the binding is finished, so that the bone tissues after the binding and fixing can be in a proper fixing state. In the prior art, after knotting, the tension degree of the knots is generally required to be tensioned and tested through a tensiometer, the tensiometer is required to be removed after the test is finished, then the suture is cut through scissors, and the tensiometer, the scissors and other instruments are required to be replaced back and forth in the process, so that the operation is extremely complicated; and after the tensiometer is removed, the knot is easy to loose before the thread is not cut, the original tensioning effect is difficult to maintain, and the firmness of bone tissue fixation is affected.

Disclosure of Invention

Based on this, it is necessary to provide a push-knot tensioner.

A push knot tensioner comprising:

a tension testing mechanism;

the proximal end of the knot pushing piece is connected with the tension testing mechanism, the distal end of the knot pushing piece is provided with a limit part and a thread hanging part which are matched with each other, a sliding knot of a suture can be arranged on the limit part, and a plurality of thread bodies of the suture can be connected with the tension testing mechanism through the thread hanging part; a kind of electronic device with high-pressure air-conditioning system

The thread cutting piece is arranged on the knot pushing piece; the distal end of the thread cutting member is provided with a cutting edge, and the thread cutting member can move along the knot pushing member and cut the suture positioned on the thread hanging part through the cutting edge.

The knot pushing tensioner is arranged in such a way that the sliding knot of the suture can be placed on the limit part and is propped against the bone tissue and the limit part, the free end of the suture can enable the thread body of the suture to move relatively with the sliding knot under the pulling of the tension testing mechanism, the length of the suture for locking the bone tissue part can be adjusted through the tension testing value in the tensioning process until the sliding knot is matched with the suture to lock the bone tissue to the expected tension, the knot pushing tensioner is not required to be removed, the suture can be cut off by directly moving the thread cutting piece on the knot pushing tensioner under the condition that the preset tension is kept unchanged, and the possibility of loosening in the thread cutting process of the sliding knot is effectively reduced; the knot pushing tensioner provided by the application has the knot pushing function and the knot fixing and tensioning function, and simultaneously can cut off the redundant parts of the suture line through the line cutting piece without changing the instrument under the condition of keeping the preset tension, so that the operation efficiency is effectively improved, the slip knot of the suture line is not easy to loosen before the line cutting after the fixation and tensioning, and the fixing effect is ensured.

In one embodiment of the present application, the limiting portion includes a groove formed on a distal end surface of the knot pushing member, and the groove is used for accommodating at least part of the sliding knot of the suture.

So set up, can be with the slip knot part or whole holding of suture in the recess, the recess plays circumference limiting displacement, avoids pushing away knot tensioning in-process, and the slip knot deviate from between spacing portion and the bone tissue, influences operation efficiency.

In one embodiment of the present application, the thread hanging portion includes a thread inlet slot connected to the limiting portion and a thread distributing slot connected to the thread inlet slot, the thread inlet slot extends axially from a distal end of the knot pushing member and penetrates at least one side of the knot pushing member in a first direction, the thread distributing slot extends radially from the thread inlet slot and penetrates at least one side of the knot pushing member, the slip knot of the thread is clamped in the limiting portion, and the plurality of thread bodies of the thread can be hung in the thread distributing slot through the thread inlet slot.

The thread cutting piece can cut the thread from the thread distributing groove, and part of the thread in the thread inlet groove and the thread distributing groove can keep a state connected with the sliding knot, so that the risk of loose unlocking of the sliding knot is reduced or avoided.

In one embodiment of the present application, the branching groove includes a first side groove and a second side groove that are mutually communicated, the first side groove and the second side groove extend radially along the wire inlet groove and respectively penetrate through two opposite sides of the knot pushing member in a second direction, and the plurality of wire bodies of the suture thread are respectively arranged at two sides of the knot pushing member through the first side groove and the second side groove.

The tension testing mechanism is used for pulling the free wire ends to tension the sliding knots, and simultaneously facilitating the wire cutting piece to simultaneously cut the wire bodies.

In one embodiment of the present application, the thread hanging portion further includes a thread hanging groove, the thread hanging groove extends axially from a side of the thread dividing groove opposite to the notch and penetrates through two opposite sides of the knot pushing member in the second direction, and the plurality of threads of the thread can enter the thread hanging groove along the first side groove and the second side groove and hang on two sides of the knot pushing member.

So set up, the effect of dodging can be played to the string groove, makes the suture more easily be connected with tension testing mechanism behind the string groove, and can avoid tension testing mechanism to tighten the suture in-process, and the suture slips from the branch groove, guarantees to push away knot tensioner and pushes away knot while tensioning suture test tensile process stability, dynamometry result accuracy, avoids appearing the circumstances of adjusting the dynamometry repeatedly.

In one embodiment of the present application, the first direction and the second direction are perpendicular to each other; and/or one of the first direction and the second direction is longitudinal, and the other is transverse.

By the arrangement, the included angles among the wire inlet groove, the wire dividing groove and the wire hanging groove can be increased, so that a doctor can conveniently and quickly place the suture on two opposite sides of the knot pushing piece through each groove in sequence, and the risk of the suture entering the wrong groove is reduced; and the first direction and the second direction are mutually perpendicular, so that the risk that the suture is separated from each groove after being stressed can be reduced, and the thread cutting piece can cut the thread at a preset position conveniently.

In one embodiment of the present application, the depth of the cutting edge is less than or equal to the distance between the distal end of the wire hanging groove and the distal end face of the knot pushing member.

By the arrangement, after the thread cutting piece moves to the most far end of the knot pushing piece, the cutting edge can cut off the suture.

In one embodiment of the application, the wire cutting member is provided with two cutting edges, and the two cutting edges are positioned on two opposite sides of the wire cutting member; and/or the number of the groups of groups,

the thread cutting piece can rotate and can be sleeved on the knot pushing piece in a sliding mode.

The arrangement is convenient for the thread cutting piece to cut the thread at the two sides of the split thread groove.

In one embodiment of the present application, the wire cutting member includes a sleeve portion and a pushing portion that are connected to each other, the cutting edge is provided on a side of the sleeve portion that is relatively far from the pushing portion, and a diameter of the pushing portion is larger than a diameter of the sleeve portion.

So set up, the doctor of being convenient for removes to being close to the string portion through the quick control sleeve portion of pushing part to cut the line, also can be through the quick return of pushing part with cutting the line piece and draw back and reset after cutting the line.

In one embodiment of the present application, the knot pushing tensioner further includes an anti-slip portion, where the anti-slip portion is disposed on the thread cutting member and/or the knot pushing member, and is configured to prevent the thread cutting member from slipping.

By the arrangement, the anti-slip part can reduce or avoid the risk of false shearing of the suture caused by false sliding of the thread shearing part in the knot pushing and tensioning process.

In one embodiment of the present application, the anti-slip portion is a semicircular protrusion provided on an outer circumferential wall of the push-junction member.

The automatic thread trimming device is simple in structure and convenient to process, and meanwhile, the thread trimming device can be guaranteed not to automatically slip and shear the thread mistakenly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic diagram of a knot-pushing tensioner according to an embodiment of the present application;

FIG. 2 is an enlarged schematic view of the structure shown at X in FIG. 1;

FIG. 3 is an exploded view of a portion of the push-knot tensioner of FIG. 1;

FIG. 4 is an enlarged schematic view of the structure at Y in FIG. 3;

FIG. 5 is an enlarged schematic view of the structure at Y in FIG. 3 at another view angle;

FIG. 6 is an enlarged schematic view of the structure at Z in FIG. 3;

FIG. 7 is a schematic view of the push-knot tensioner of FIG. 1 from another perspective;

FIG. 8 is an enlarged schematic view of the structure at M in FIG. 7;

FIG. 9 is a schematic cross-sectional view of the knot-pushing tensioner of FIG. 7 with A-A as a cut line;

FIG. 10 is a schematic view of the push-knot tensioner of FIG. 1 from another perspective;

fig. 11 is an enlarged schematic view of the structure at N in fig. 10.

Reference numerals: 100. pushing and knotting a tensioner; 10. a tension testing mechanism; 11. a mounting sleeve; 111. a hooking part; 12. a movable member; 121. a mounting groove; 122. a marking part; 13. a first elastic member; 14. a rotating assembly; 141. a spool; 142. a winding post; 1421. a winding port; 143. a rotating shaft; 144. a locking member; 145. a second elastic member; 20. pushing the knot piece; 21. a limit part; 211. a groove; 22. a wire hanging part; 221. wire inlet groove; 222. wire dividing grooves; 2221. a first side groove; 2222. a second side groove; 223. wire hanging groove; 23. a limit bump; 30. a wire cutting member; 31. a pushing part; 32. a sleeve portion; 321. and a cutting edge.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center", "in the first direction", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

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 at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a knot-pushing tensioner 100 according to an embodiment of the application; the push-knot tensioner 100 has general application in the medical field, and in particular in the field associated with bone tissue surgery, it being understood that the subject to which the bone tissue surgery is directed includes humans and other animals.

Referring to fig. 1 again and fig. 2 to 9 together, fig. 2 is an enlarged schematic view of the structure at X in fig. 1; FIG. 3 is a partially exploded view of the knot tensioner 100 of FIG. 1; FIG. 4 is an enlarged schematic view of the structure at Y in FIG. 3; FIG. 5 is an enlarged schematic view of the structure at Y in FIG. 3 at another view angle; FIG. 6 is an enlarged schematic view of the structure at Z in FIG. 3; fig. 7 is a schematic structural diagram of the knot-pushing tensioner 100 in fig. 1 in another view; FIG. 8 is an enlarged schematic view of the structure at M in FIG. 7; fig. 9 is a schematic cross-sectional view of the knot-pushing tensioner 100 of fig. 7 with A-A as a cut line.

A push knot tensioner 100 comprising:

a tension test mechanism 10;

the device comprises a pushing and tying piece 20, wherein the proximal end of the pushing and tying piece 20 is connected with a tension testing mechanism 10, the distal end of the pushing and tying piece is provided with a limiting part 21 and a thread hanging part 22 which are matched with each other, a sliding knot of a suture can be arranged on the limiting part 21, and a plurality of thread bodies of the suture can be connected with the tension testing mechanism 10 through the thread hanging part 22; a kind of electronic device with high-pressure air-conditioning system

A thread cutting member 30 mounted to the knot pushing member 20; the distal end of the thread cutting member 30 is provided with a cutting edge 321, and the thread cutting member 30 is capable of moving along the knot pushing member 20 and cutting the thread at the thread hanging portion 22 through the cutting edge 321.

The knot pushing tensioner 100 is arranged in such a way that the sliding knot of the suture can be placed between the limit part 21 and the bone tissue/titanium plate and the limit part 21, the free end of the suture can enable the thread body of the suture to move relatively with the sliding knot under the pulling of the tension testing mechanism 10, the length of the suture for locking the bone tissue part can be adjusted through the tension testing value in the tensioning process until the sliding knot is matched with the suture to lock the bone tissue to the expected tension, the knot pushing tensioner 100 is not required to be removed, the suture can be cut off directly by moving the thread cutting piece 30 on the knot pushing tensioner 100 under the condition that the preset tension is kept unchanged, and the possibility of loosening in the thread cutting process of the sliding knot is effectively reduced; the knot pushing tensioner 100 provided by the application has the knot pushing function and the function of fixing and tensioning the suture knot, and simultaneously can cut off the redundant parts of the suture thread through the thread cutting member 30 without changing the instrument under the condition of keeping the preset tension, so that the whole use is convenient, the operation efficiency can be effectively improved, the suture knot is not easy to loosen before cutting after being fixed and tensioned, and the fixing effect on bone tissues is greatly ensured.

It is understood that the suture is a medical suture, including but not limited to a flat suture, a round suture.

It should be noted that "distal" in the present application means an end relatively far from a doctor, and "proximal" means an end relatively close to the doctor.

Referring to fig. 1 and 2 again, in one embodiment of the present application, the limiting portion 21 includes a groove 211 formed on a distal end surface of the knot pushing member 20, and the groove 211 is used for accommodating at least part of the sliding knot of the suture.

So set up, can be with the slip knot part or the whole holding of suture in recess 211, recess 211 plays circumference spacing effect, avoids pushing away knot tensioning in-process, slip knot deviate from between spacing portion 21 and the bone tissue, influences operation efficiency.

It can be understood that the caliber of the thread hanging portion 22 is smaller than the diameter of the sliding knot, so that the sliding knot can be ensured to be clamped in the groove 211, that is, the sliding knot is ensured not to slide into the thread hanging portion 22 from the limiting portion 21 in the process of tensioning the suture by the tension testing mechanism 10, and the situation that the bone tissue fixing effect is poor due to deviation of the preset thread cutting position of the thread cutting member 30 is avoided.

Referring to fig. 3 to 5 again, in one embodiment of the present application, the thread hanging portion 22 includes a thread inlet slot 221 connected to the limiting portion 21 and a thread dividing slot 222 connected to the thread inlet slot 221, the thread inlet slot 221 extends axially from the distal end of the knot pushing member 20 and penetrates at least one side of the knot pushing member 20 in the first direction, the thread dividing slot 222 extends radially from the thread inlet slot 221 and penetrates at least one side of the knot pushing member 20, the sliding knot of the thread is clamped on the limiting portion, and the thread bodies of the thread can be hung in the thread dividing slot 222 through the thread inlet slot 221.

So configured, the thread cutting member 30 is capable of cutting the thread from the thread groove 222, and the portion of the thread located in the thread groove 221 and the thread groove 222 is capable of remaining connected to the slip knot, so as to reduce or avoid the risk of loose and untwisted slip knots.

In other words, the wire inlet groove 221 and the wire outlet groove 222 can be convenient for reserving part of the wire ends for the sliding knot while the wire cutting member 30 cuts the wire, so that the situation that the sliding knot is loosened and untied after being stressed due to the fact that the wire cutting position of the wire cutting member 30 is too close to the sliding knot is avoided. It will be appreciated that the length of the reserved thread ends connected to the slip knot may be relatively controlled by the axial extension of the thread inlet slot 221, the longer the reserved thread end length. In a typical procedure, the length of the end of thread reserved ranges from 5mm to 15mm, including 5mm and 15mm. It will be appreciated that in other embodiments, the length of the thread ends reserved according to the requirements may also be less than 5mm or greater than 15mm.

Referring again to fig. 4, in one embodiment of the present application, the wire inlet slot 221 extends through one side of the push button 20 in a first direction.

Referring to fig. 4 and 5 again, it will be understood that "the branching groove 222 is in communication with the wire inlet groove 221 and extends radially from the wire inlet groove 221 and penetrates at least one side of the push-junction piece 20" means that the branching groove 222 can follow the wire inlet groove 221 to penetrate one side or both sides of the push-junction piece 20 in the first direction, and simultaneously penetrate one side or both sides of the push-junction piece 20 in the second direction.

Referring to fig. 2, 4 and 5 again, in one embodiment of the present application, the branching groove 222 includes a first side groove 2221 and a second side groove 2222 that are mutually communicated, the first side groove 2221 and the second side groove 2222 extend radially along the wire inlet groove 221 and respectively penetrate through opposite sides of the knot pushing member 20 in the second direction, and the plurality of thread bodies of the thread are disposed on the opposite sides of the knot pushing member 20 through the first side groove 2221 and the second side groove 2222. In other words, the wire dividing groove 222 penetrates opposite sides of the push button 20 in the second direction.

Thus, the plurality of thread bodies of the suture can be respectively arranged at two sides of the knot pushing piece 20 through the first side groove 2221 and the second side groove 2222, so that the thread cutting piece 30 can simultaneously cut the plurality of thread bodies while the tension testing mechanism 10 pulls the plurality of free thread ends to tension the sliding knots.

Referring to fig. 3 to 5 again, in one embodiment of the present application, the wire hanging portion 22 further includes a wire hanging groove 223, the wire hanging groove 223 extends axially from one side of the wire hanging groove 222 relatively far from the notch and penetrates through two opposite sides of the knot pushing member 20 in the second direction, and a plurality of wires of the suture thread can enter the wire hanging groove 223 along the first side groove 2221 and the second side groove 2222 and hang on two sides of the knot pushing member 20.

So set up, the effect of dodging can be played to the string groove 223, makes the suture more easily be connected with tension test mechanism 10 behind string groove 223, and can avoid tension test mechanism 10 to tighten the suture in-process, and the suture slips from the branch groove 222, guarantees to push away knot tensioner 100 and pushes away knot while tensioning suture test tensile process stability, the dynamometry result is accurate, avoids appearing the circumstances of adjusting the dynamometry repeatedly.

It can be understood that, as long as the thread groove 223 does not affect the thread body of the thread passing through the thread groove 223 from the thread groove 222, the thread body is separated on two sides of the knot pushing member 20, and the thread cutting member 30 is not affected, in other embodiments, the specific shape of the thread groove 223 and the extending direction of each part can be changed accordingly according to the requirement. Illustratively, the wire hanging groove 223 may include two extending portions extending from one side of the wire hanging groove 222 opposite to the notch in the third direction and the fourth direction, respectively, and penetrating through opposite sides of the push-junction piece 20 in the radial direction, respectively.

Referring to fig. 4 and fig. 5 again, in one embodiment of the present application, the first direction and the second direction are perpendicular to each other; and/or one of the first direction and the second direction is longitudinal, and the other is transverse. In other words, the angle between the first direction and the second direction is 90 degrees.

By the arrangement, the included angles among the wire inlet groove 221, the wire dividing groove 222 and the wire hanging groove 223 can be increased, so that a doctor can conveniently and quickly place the suture on two opposite sides of the knot pushing piece 20 through each groove in sequence, and the risk of the suture entering the wrong groove is reduced; and the first direction is mutually perpendicular with the second direction can also reduce the risk that the suture is pulled out of each groove after being stressed, so that the thread cutting piece 30 can cut the thread at a preset position.

Illustratively, in one embodiment of the present application, the first direction is longitudinal and the second direction is transverse, thus facilitating the physician's manipulation of the push-knot tensioner 100.

It will be appreciated that in other embodiments, the angle between the first direction and the second direction may be less than 90 degrees or greater than 90 degrees.

Referring to fig. 10 and 11, fig. 10 is a schematic structural diagram of the knot-pushing tensioner 100 in fig. 1 under another view; fig. 11 is an enlarged schematic view of the structure at N in fig. 10. Further, in order to prevent the sliding knot from sliding into the branching groove 222, at least one limiting bump 23 is further disposed between the groove 211 and the branching groove 222.

Referring to fig. 1 and 3 again, in one embodiment of the present application, the wire cutting member 30 is sleeve-shaped; the thread cutting member 30 is slidably sleeved on the knot pushing member 20, and the cutting edge 321 is provided at the edge of the nozzle at the distal end of the thread cutting member 30.

Referring to fig. 7 and 8 again, in one embodiment of the present application, the depth (L1) of the cutting edge 321 is less than or equal to the distance (L2) between the distal end of the wire groove 223 and the distal end surface of the knot pushing member 20. By this arrangement, it is ensured that the cutting edge 321 can cut the suture after the thread cutting member 30 moves to the most distal end of the knot pushing member 20.

Referring to fig. 3 again, in one embodiment of the present application, the wire cutting member 30 is provided with two cutting edges 321, and the two cutting edges 321 are located at two opposite sides of the wire cutting member 30; in other words, the two cutting edges 321 of the thread cutting member 30 are disposed corresponding to the notches on both sides of the thread dividing groove 222, so that the sliding thread cutting member 30 can cut two or more threads located at the same time through the two cutting edges 321. It will be appreciated that in other embodiments, the wire dividing groove 222 may correspondingly include a plurality of side grooves, and the wire cutting member 30 may be provided with one cutting edge 321 or a plurality of cutting edges 321, depending on the number of stitches.

In one embodiment of the present application, the wire cutting member 30 is rotatably and slidably sleeved on the knot pushing member 20. So set up, when cutting wire 30 only sets up a blade 321, accessible rotates cutting wire 30, adjusts the position of blade 321, and then cuts the suture that is located the different positions of dividing groove 222 through sliding many times.

Referring to fig. 1 and 3 again, in one embodiment of the present application, the wire cutting member 30 includes a sleeve portion 32 and a pushing portion 31 connected to each other, a cutting edge 321 is provided on a side of the sleeve portion 32 opposite to the pushing portion 31, and a diameter of the pushing portion 31 is larger than a diameter of the sleeve portion 32.

So set up, the doctor of being convenient for removes to being close to string hanging portion 22 through the quick control sleeve portion 32 of pushing portion 31 to cut the line, also can be through the quick pull-back reset of pushing portion 31 with cutting line spare 30 after cutting the line.

In one embodiment of the present application, the knot-pushing tensioner 100 further includes an anti-slip portion (not shown) disposed on the thread cutting member 30 and/or the knot-pushing member 20 for preventing the thread cutting member 30 from sliding.

By the arrangement, the anti-slip part can reduce or avoid the risk of false cutting of the suture caused by false sliding of the thread cutting member 30 in the knot pushing and tensioning process.

In one embodiment of the present application, the anti-slip portion is a semicircular protrusion provided on the outer peripheral wall of the push fastener 20.

The device has the advantages of simple structure and convenient processing, and can ensure that the thread cutting member 30 can not automatically slide to cut the thread by mistake.

It will be appreciated that in other embodiments, the anti-slip portion may be anti-slip, or replaced by other limit locking structures, so long as the self-slip mis-shearing of the wire cutting member 30 is avoided.

Referring to fig. 1, 3, 7 and 9 again, in one embodiment, the tension testing mechanism 10 includes a mounting sleeve 11, a first elastic member 13, a movable member 12 and a rotating assembly 14, wherein the first elastic member 13 is disposed in the mounting sleeve 11, a distal end of the mounting sleeve 11 is fixedly connected to the pushing and fastening member 20, and a proximal end is connected to the movable member 12 through the first elastic member 13; the movable part 12 is provided with a marking part 122, and the marking part 122 is used for displaying the force measurement value; the rotating assembly 14 is used for driving the suture to be wound, so that the movable piece 12 compresses the first elastic piece 13 to slide into the mounting sleeve 11, and the force measurement value on the corresponding movable piece 12 at the proximal end of the mounting sleeve 11 is the tensiometer test result.

Referring again to fig. 3 to 9, in particular, the rotating assembly 14 includes a spool 141 and a spool 142 mounted on the spool 141, the movable member 12 is provided with a mounting groove 121, and the spool 141 is rotatably mounted in the mounting groove 121 through a rotating shaft 143.

Further, in order to facilitate rotation of the rotation shaft 143, a grip portion (not numbered) is provided on a side of the rotation shaft 143 protruding from the movable member 12, the grip portion facilitating the doctor to grip the rotation shaft 143.

Referring to fig. 6 again, further, in order to avoid mutual interference between different thread bodies of the suture, the winding post 142 includes two winding arms, the two winding arms are V-shaped, two opposite sides of the two winding arms are respectively provided with a winding opening 1421, and a plurality of thread bodies of the suture can be wound on the two winding arms through the winding openings 1421.

Referring to fig. 7 and 9 again, further, the rotating assembly 14 further includes a locking member 144 and a second elastic member 145, and the locking member 144 and the second elastic member 145 cooperate with each other to fix the spool 141. To maintain the tightness of the slip knot and suture after tensioning to a suitable extent, facilitating the physician to free one hand to operate the cutting element 30 to cut the thread.

Referring to fig. 3 again, further, a hooking portion 111 is further protruding on the outer peripheral wall of the mounting sleeve 11, and the hooking portion 111 includes two opposite hooking grooves, and the stitches of different strands can be separately placed in the hooking grooves and then connected to the winding post 142. Thus, the suture can be relatively gathered in the middle area of the knot pushing tensioner 100, which is convenient for the tension of the winding and the tension test.

Taking two wire bodies as an example, the push-junction tensioner 100 is used in the following process:

the sliding knot is placed in the groove 211 and is propped against bone tissue or titanium plate, two thread bodies of the suture are respectively placed on two sides of the knot pushing piece 20 through the thread inlet groove 221, the thread dividing groove 222 and the thread hanging groove 223, two free ends of the two separated thread bodies are wound on the winding post 142, the rotating shaft is rotated, the winding drum 141 can gradually tighten and wind the two thread bodies of the suture onto the winding drum 141, further, the sliding knot and the suture relatively move, the tensioning degree is adjusted according to the test result of the tension test mechanism 10, after the sliding knot tensioning degree accords with the expected effect with the length of the part of suture used for binding, the rotating shaft is stopped, the thread cutting piece 30 is slid, the two thread bodies are cut off simultaneously through the cutting edges 321 on two sides of the thread cutting piece 30, and the operation processes such as knot pushing, tensioning, cutting and the like are completed.

The knot pushing tensioner 100 provided by the application has the knot pushing function and the function of fixing and tensioning the suture knot, and simultaneously can cut off the redundant parts of the suture thread through the thread cutting member 30 without changing the instrument under the condition of keeping the preset tension, so that the whole use is convenient, the operation efficiency can be effectively improved, the suture knot is not easy to loosen before cutting after being fixed and tensioned, and the fixing effect on bone tissues is greatly ensured.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A push-knot tensioner comprising:

a tension testing mechanism;

the proximal end of the knot pushing piece is connected with the tension testing mechanism, the distal end of the knot pushing piece is provided with a limit part and a thread hanging part which are matched with each other, and a plurality of thread bodies of the suture thread can be connected with the tension testing mechanism through the thread hanging part; the limiting part comprises a groove which is arranged on the far end surface of the knot pushing piece and is used for accommodating at least part of the sliding knot of the suture, the thread hanging part comprises a thread inlet groove which is communicated with the limiting part and a thread dividing groove which is communicated with the thread inlet groove, the thread inlet groove axially extends from the far end of the knot pushing piece and penetrates through at least one side of the knot pushing piece in a first direction, the thread dividing groove comprises a first side groove and a second side groove which are mutually communicated, the first side groove and the second side groove radially extend along the thread inlet groove and respectively penetrate through the knot pushing piece in a second direction, and a plurality of thread bodies of the suture are respectively arranged on two sides of the knot pushing piece through the first side groove and the second side groove; a kind of electronic device with high-pressure air-conditioning system

The thread cutting piece is arranged on the knot pushing piece; the distal end of the thread cutting member is provided with a cutting edge, and the thread cutting member can move along the knot pushing member and simultaneously cut the suture positioned in the first side groove and the second side groove through the cutting edge;

the tension testing mechanism comprises a mounting sleeve, a first elastic piece, a movable piece and a rotating assembly, wherein the first elastic piece is arranged in the mounting sleeve, the far end of the mounting sleeve is fixedly connected with the knot pushing piece, and the near end of the mounting sleeve is connected with the movable piece through the first elastic piece; the movable part is provided with a marking part which is used for displaying the force measurement value; the rotating assembly comprises a winding reel and a winding column arranged on the winding reel, a mounting groove is formed in the movable piece, the winding reel is rotatably arranged in the mounting groove through a rotating shaft, and the rotating assembly is used for driving a suture to be wound, so that the movable piece compresses the first elastic piece to slide in the mounting sleeve.

2. The knot pushing tensioner of claim 1, wherein the thread hanging portion further comprises a thread hanging groove extending axially from a side of the thread dividing groove opposite from the thread inlet groove opening and penetrating the knot pushing member in a second direction, and the plurality of threads of the thread can enter the thread hanging groove along the first side groove and the second side groove and hang on both sides of the knot pushing member.

3. The push-knot tensioner of claim 1 or 2, wherein the first direction and the second direction are perpendicular to each other.

4. The push-knot tensioner of claim 1 or 2, wherein one of the first direction and the second direction is longitudinal and the other is transverse.

5. The push-knot tensioner of claim 2, wherein the depth of the cutting edge is less than or equal to the distance between the distal end of the thread hanging groove and the distal end face of the push-knot.

6. The knot pushing tensioner of claim 1, wherein the wire cutting member is provided with two cutting edges, the two cutting edges being located on opposite sides of the wire cutting member; and/or the number of the groups of groups,

7. The knot pushing tensioner of claim 1, wherein the thread cutting member comprises a sleeve portion and a pushing portion which are connected with each other, the cutting edge is formed on one side, relatively far away from the pushing portion, of the sleeve portion, and the diameter of the pushing portion is larger than that of the sleeve portion.

8. The knot pushing tensioner of claim 1, further comprising an anti-slip portion disposed on the knot pushing member and/or the knot pushing member for preventing the knot pushing member from slipping.

9. The knot-pushing tensioner of claim 8, wherein the anti-slip portion is a semi-circular protrusion provided on the outer peripheral wall of the knot-pushing member.