CN113397763A

CN113397763A - Hand-held type tensioner

Info

Publication number: CN113397763A
Application number: CN202110668028.2A
Authority: CN
Inventors: 刘川枫; 赵学东; 周诗源; 盛然; 郑承昆; 刘继强
Original assignee: Yunyi Beijing Medical Devices Co ltd
Current assignee: Yunyi Beijing Medical Devices Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-09-17
Anticipated expiration: 2041-06-16
Also published as: CN113397763B

Abstract

The utility model belongs to the technical field of medical instrument and specifically relates to a hand-held type tensioner is related to, including the dead lever, can dismantle guide bar, the rigid coupling of connection in dead lever one end are in the guide bar is kept away from the butt piece of dead lever one end and the installation pole of guide bar one end is kept away from at the dead lever, the dead lever is offered towards the one end of installation pole and is supplied installation pole male jack, installation pole and jack sliding fit, install the elastic component in the jack, the installation pole is slided to the direction of keeping away from the guide bar by the elastic component drive, the one end that the dead lever was kept away from to the guide bar is offered and is provided with the first through wires hole that penetrates with the installation rope that is connected with the graft, rotate on. The tension control device has the advantages that deviation between initial tension of the graft and preset tension can be reduced, and influence on postoperative operation of a patient is reduced.

Description

Hand-held type tensioner

Technical Field

The application relates to the field of medical equipment, in particular to a handheld tensioner.

Background

Injury of the anterior cruciate ligament of the knee joint is one of the most common and serious sports injuries, the knee joint is unstable due to tearing of the anterior cruciate ligament, and serious dysfunction of the knee joint is caused due to improper treatment, so that the ligament and the function thereof should be reconstructed by timely performing surgical treatment. The restoration and reconstruction of the injury of the anterior cruciate ligament is always an important research subject in the field of orthopedics and sports injury.

Referring to fig. 1, for the reconstructed anterior cruciate ligament at present, during reconstruction, a bone passage needs to be formed in a knee joint of a human body, a mounting rope is fixed at both ends of a graft, then the graft is mounted in the bone passage, and one end of the mounting rope, which is far away from the graft, penetrates out of the bone passage and is fixed by knotting, so that the graft can be fixed in the bone passage, the reconstruction of the graft is realized, and the graft can replace the ligament function of the human body.

The initial tension of the implant during fixation has a great influence on the operation effect, but in the process of fixing the implant at present, the initial tension value of the fixed implant is mostly deduced by a doctor according to the length of the implant and the tension of the implant per se by experience in the process of judging the fixation of the implant, the doctor has very high requirements on the experience of the doctor, and meanwhile, the initial tension and the preset tension of the fixed implant have great deviation, so that the postoperative recovery effect of a patient is influenced.

Disclosure of Invention

In order to reduce the deviation that produces between the initial tension of graft and the tension of predetermineeing, reduce the influence that causes to patient's postoperative, this application provides a hand-held type tensioner.

The application provides a hand-held type tensioner adopts following technical scheme:

the utility model provides a hand-held type tensioner, includes the dead lever, can dismantle the connection and be in guide bar, rigid coupling of dead lever one end are in the guide bar is kept away from the butt piece and the setting of dead lever one end are in the dead lever is kept away from the installation pole of guide bar one end, the dead lever orientation the confession has been seted up to the one end of installation pole the installation pole male jack, the installation pole with jack sliding fit, install the elastic component in the jack, the installation pole receives the elastic component drive is to keeping away from the direction of guide bar slides, the guide bar is kept away from the one end of dead lever is seted up and is provided with the first through wires hole that penetrates with the installation rope that is connected with the graft, it is connected with the wire winding pole that is used for winding installation rope to rotate on the installation pole.

Through adopting above-mentioned technical scheme, when installing the graft in the bone way, will install the rope and pass from the bone way, and will install the one end that the rope kept away from the graft and pass from first through wires hole, then the groove winding is on the wire wrapping rod, the doctor directly operates the wire wrapping rod and rotates, just can twine the installation rope on the wire wrapping rod, thereby play the effect of tensioning to the installation rope, also drive the installation pole simultaneously and slide and extrude the elastic component to the direction that the guide bar is located in the jack, can draw the tension value of graft through surveying the distance that the installation pole slides to the slide opening, when rotating the wire wrapping rod and making the tension of the corresponding graft of position that the installation pole slided to the slide opening and predetermine tension unanimously, fix the position of installation rope, the initial tension value of the graft after installation fixed this moment is unanimous with the tension of predetermineeing. Greatly reduces the error between the initial tension of the graft and the preset tension and reduces the influence on the postoperative patient.

Optionally, a first scale is arranged on the outer wall of the mounting rod to judge the position of the mounting rod relative to the fixing rod.

Through adopting above-mentioned technical scheme, can audio-visually find out the distance that the installation pole slided to the jack through first scale to can directly obtain the tension value of graft.

Optionally, the fixing rod and the side wall of the installation rod are both provided with installation grooves along the length direction thereof, the installation rope is embedded into the installation grooves, the winding rod is located at one end of the installation groove far away from the guide rod, and the axis direction of the winding rod is perpendicular to the length direction of the installation groove.

Through adopting above-mentioned technical scheme, the back is worn out from first through wires hole to the installation rope, will follow in the mounting groove through and the winding on the wire wrapping rod, the mounting groove can play the effect of holding direction to the installation rope, avoids the installation rope to produce wearing and tearing with the lateral wall of dead lever and installation pole.

Optionally, the side wall of the mounting rod is in threaded connection with a fixing bolt, and a sliding groove for allowing the fixing bolt to slide is formed in the side wall of the fixing rod.

Through adopting above-mentioned technical scheme, when the installation pole slided in the jack, will drive fixing bolt and slide in the spout to the extreme position of restriction installation pole in the jack avoids installing the pole and follows the roll-off in the jack under the spring force effect.

Optionally, a mounting hole for allowing the winding rod to slide is formed in the side wall of the mounting rod, a reversing groove is formed in one end of the winding rod, one end, far away from the graft, of the mounting rope changes the winding direction of the mounting rope after passing through the reversing groove, and when the winding rod rotates, the two ends of the mounting rope are wound on the winding rod or pulled out of the winding rod simultaneously.

Through adopting above-mentioned technical scheme, can accomplish the installation of installation pole and wire winding pole through installing the wire winding pole in the mounting hole, during the use, can change its winding direction after the one end that the transplant was kept away from to the installation rope passes from the switching-over inslot, then when rotating the wire winding pole, can twine the installation rope both ends on the wire winding pole simultaneously, avoid installation rope one end not hard up and influence normal tensioning operation to the transplant.

Optionally, a second threading hole through which the installation rope penetrates is formed in one end, facing the fixing bolt, of the installation rod, a fixing ring is fixedly connected to the fixing bolt, a winding groove for winding the installation rope is formed between the fixing ring and a bolt head of the fixing bolt, and a fixing piece for fixing the position of the installation rope in the winding groove is arranged in the winding groove.

Through adopting above-mentioned technical scheme, the one end winding that the graft was kept away from to the installation rope can pass in the second through wires hole again after on the wire winding pole to in the winding groove, fix the position of installation rope in the wire winding groove through the mounting, make the installation rope that is located between wire winding pole and the fixing bolt be in the tensioning condition all the time, avoid the installation rope to keep away from the one end of graft not hard up and influence the normal tensioning work to the graft.

Optionally, a blocking ring is arranged at one end of the winding rod, where the reversing groove is formed, a connecting block is fixedly connected between the blocking ring and one side wall of the reversing groove, an avoiding opening for allowing the installation rope to slide into the reversing groove is formed between the blocking ring and the other side wall of the reversing groove, and the diameter of the blocking ring is larger than that of the installation hole.

Through adopting above-mentioned technical scheme, when needs will install the rope and pass from the switching-over groove, can directly slide the installation rope to the switching-over groove in dodging the mouth, then the operation wire winding pole slides in order to seal the position of dodging the mouth in the mounting hole, and the extreme position of wire winding pole in the mounting hole can be fixed in the setting of fender ring, avoids the wire winding pole to roll off from the mounting hole.

Optionally, a ratchet wheel is fixedly connected to the winding rod, a placing groove is formed in the outer wall of the mounting rod, a pawl meshed with the ratchet wheel is hinged to the side wall of the placing groove, a supporting spring is fixedly connected between the pawl and the bottom wall of the placing groove, and the supporting spring is located on one side, away from the ratchet wheel, of a hinged point of the pawl and the placing groove.

Through adopting above-mentioned technical scheme, under the normality, pawl and ratchet cooperation under the supporting spring effect, when the doctor rotated the wire winding pole and will install the rope winding on the wire winding pole, the pawl can slide on the ratchet, and when the tension of adjusting the graft when needs state, thereby the pawl can block the position of fixing the ratchet on the ratchet for the graft keeps predetermineeing the tension state, then with another installation rope at the outside knot of bone way fixed can. When the winding state to the installation rope is relieved to needs, directly press the one end that the ratchet was kept away from to the pawl for the pawl compression supporting spring and the articulated shaft that goes round with the standing groove lateral wall rotate, just can operate the wire winding pole reversal, will install the rope and emit from the wire winding pole.

Optionally, the guide bar with be provided with coupling assembling between the dead lever, the guide bar passes through coupling assembling with the dead lever can be dismantled and be connected.

Through adopting above-mentioned technical scheme, can realize dismantling of guide bar and dead lever through coupling assembling and be connected, be convenient for change the guide bar to the needs that adapt to different operations.

Optionally, the abutment comprises an abutment ring affixed to the guide bar.

Through adopting above-mentioned technical scheme, during the use, the butt ring can the butt on human surface to increase the area of contact between guide bar and the human body, make the guide bar butt more stable when the human surface.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the fixing rod is matched with the mounting rod, and the elastic piece and the winding rod are arranged, so that the graft can be pulled through the winding rod, and the tension of the graft can be measured through the interaction force matching between the elastic piece and the graft, so that the tension of the mounted graft is consistent with the expected preset tension, the error between the initial tension and the expected tension of the graft is greatly reduced, the influence on the postoperative operation of a patient is reduced, and the postoperative recovery of the patient is facilitated;

2. the arrangement of the reversing groove enables the winding direction of one end of the installation rope to be changed, so that when the winding rod is rotated, two ends of the installation rope can be wound on the winding rod at the same time, and the situation that when the winding rod rotates to pull one end of the installation rope, the other end of the installation rope is released from the winding rod to be loosened, the installation rope slips on the winding rod, and normal tensioning operation of the implant is influenced is avoided;

3. the arrangement of the ratchet wheel and the pawl can ensure that the winding rod can be locked in one direction during working and cannot be reversely rotated to loosen the mounting rope, a doctor does not need to apply force to hold the winding rod in real time, and the operation is more convenient and labor-saving;

4. the guide bar is connected with dismantling of dead lever for can select the guide bar of different grade type to install on the dead lever according to the operation of difference, application range is wider.

Drawings

Figure 1 is a schematic representation of the anterior cruciate ligament structure after reconstruction.

Fig. 2 is a schematic view of the overall structure of the present application.

Fig. 3 is a schematic top sectional view of the guide bar according to the present application.

Fig. 4 is a schematic front sectional view of the entire application.

Fig. 5 is a schematic view showing the structure of the fixing device.

Fig. 6 is a schematic structural view for embodying another example of the connecting assembly.

Fig. 7 is a schematic view showing a structure in which the abutment member is fixed to the guide bar.

Fig. 8 is a schematic view illustrating another opening manner of the first threading hole.

Description of reference numerals: 1. fixing the rod; 11. a jack; 12. an elastic member; 13. fixing the bolt; 131. a fixing ring; 132. a winding slot; 133. a fixing member; 14. a chute; 15. a second scale; 16. a fixing hole; 2. a guide bar; 21. a first threading hole; 3. mounting a rod; 31. mounting grooves; 32. mounting holes; 33. a first scale; 34. a second threading hole; 35. a placement groove; 4. a wire winding rod; 42. a reversing slot; 43. a baffle ring; 44. connecting blocks; 45. avoiding the mouth; 46. a handle; 5. a fixing device; 51. a ratchet wheel; 52. a pawl; 53. a support spring; 6. a connecting assembly; 61. a connecting pin; 62. a groove is embedded; 63. an abutment spring; 64. a butting post; 65. a card slot; 7. an abutting member; 72. a butting ring; 73. a protrusion; 74. a limiting rod; 91. the bone tract; 92. a graft; 93. and (6) installing a rope.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses hand-held type tensioner. Referring to fig. 2, the tensioner includes dead lever 1, can dismantle guide bar 2 of connecting in dead lever 1 one end and be located dead lever 1 and keep away from installation pole 3 of guide bar 2 one end, wherein, offer at dead lever 1 towards the one end of installation pole 3 and supply installation pole 3 male jack 11, installation pole 3 sliding connection is in jack 11, the rigid coupling has elastic component 12 in jack 11, elastic component 12 is located between 11 blind ends of jack and installation pole 3, elastic component 12 will give installation pole 3 one the power of keeping away from guide bar 2.

Referring to fig. 2 and 3, a first threading hole 21 for penetrating an installation rope 93 (refer to fig. 1) connected with a graft 92 (refer to fig. 1) is formed in one end of the guide rod 2 far away from the fixing rod 1, an installation groove 31 for embedding the installation rope 93 is formed in the side walls of the fixing rod 1 and the installation rod 3 along the length direction of the fixing rod, installation holes 32 are formed in two opposite side walls of the installation rod 3 in a penetrating mode, the installation holes 32 are vertically communicated with one end, far away from the guide rod 2, of the installation groove 31, and a winding rod 4 is rotatably connected to the installation holes 32. When the graft 92 needs to be fixed, a doctor can directly pass the installation rope 93 connected with the graft 92 through the first threading hole 21, then the installation rope 93 is wound on the winding rod 4, the installation rope 93 is also directly embedded into the installation groove 31, the doctor directly rotates the winding rod 4, the installation rope 93 can be pulled to be wound on the winding rod 4, meanwhile, the installation rod 3 is stressed to slide in the direction of the guide rod 2 in the insertion hole 11, the elastic part 12 is extruded, and the tension of the graft 92 can be obtained through the sliding distance of the installation rod 3 and the elastic force of the elastic part 12.

Wherein, elastic component 12 can select the spring for use, and the spring can be under self elasticity effect to the direction of keeping away from guide bar 2 promotion installation pole 3, also will slide and extrude the spring to guide bar 2 place direction in jack 11 when installation pole 3 atress.

Meanwhile, in order to facilitate the doctor to visually check the tension of the graft 92, the first scale 33 is arranged on the side wall of the mounting rod 3, and the doctor can visually see the position of the mounting rod 3 relative to the fixing rod 1 through the first scale 33, so as to obtain the tension value of the graft 92. Wherein, first scale 33 can be directly for carving on the installation pole 3 lateral wall, also can be on installation pole 3 surface through the coating spraying, as long as can play the marking effect.

Referring to fig. 2 and 4, a fixing bolt 13 is connected to a side wall of the mounting rod 3 through a thread, the fixing bolt 13 is connected to one end of the mounting rod 3 located in the insertion hole 11, a sliding groove 14 communicated with the insertion hole 11 is formed in a side wall of the fixing rod 1, the fixing bolt 13 is slidably connected in the sliding groove 14, and when the mounting rod 3 slides in the insertion hole 11, the fixing bolt 13 is also driven to slide in the sliding groove 14, so that a limit position of the mounting rod 3 in sliding is fixed, and the mounting rod 3 is prevented from sliding out of the insertion hole 11 under the action of spring force. In this application, the spout 14 and the mounting groove 31 are respectively opened at the opposite sides of the fixing rod 1, so that the stress on the fixing rod 1 is more balanced.

Meanwhile, in order to avoid that the installation rope 93 slips on the winding rod 4 and cannot pull the graft 92 when the winding rod 4 is rotated, anti-slip lines are processed on the outer wall of the winding rod 4, so that the friction force between the installation rope 93 and the winding rod 4 can be increased, and the probability that the installation rope 93 slips on the winding rod 4 is reduced.

When will install the rope 93 and twine on winding rod 4, along with the rotation of winding rod 4, the installation rope 93 that is located between winding rod 4 and graft 92 will twine on winding rod 4, and the part of installation rope 93 free end will be followed winding rod 4 and is emitted, the firm degree that installation rope 93 twined on winding rod 4 depends on the number of turns that installation rope 93 twined, need to twine more number of turns and just can guarantee that installation rope 93 does not skid, for this reason, switching-over groove 42 has still been seted up on winding rod 4, switching-over groove 42 is used for changing the direction behind installation rope 93 twines on winding rod 4.

Referring to fig. 4, when the installation rope 93 needs to be wound on the winding rod 4, the installation rope 93 can firstly pass through the reversing slot 42 and then be wound on the winding rod 4, at this time, when the winding rod 4 rotates, the installation ropes 93 positioned at both sides of the winding rod 4 are simultaneously wound on the winding rod 4, and along with the rotation of the winding rod 4, the installation ropes 93 wound on the winding rod 4 are more, and the fixation is firmer.

In order to facilitate the operation of inserting the installation rope 93 into the reversing slot 42, the winding rod 4 can be arranged to slide in the installation hole 32, and when the installation rope 93 needs to be inserted into the reversing slot 42, the winding rod 4 is operated to slide in the direction without the reversing slot 42, so that a doctor can conveniently slide the installation rope 93 into the reversing slot 42 directly from the end of the winding rod 4.

Referring to fig. 2 and 3, a stop ring 43 is further disposed at one end of the winding rod 4, where the reversing groove 42 is formed, a connecting block 44 is fixedly connected between the stop ring 43 and one side wall of the opening end of the reversing groove 42, and an escape opening 45 for the installation rope 93 to slide to the reversing groove 42 is formed between the stop ring 43 and the other side wall of the reversing groove 42. The diameter of the stop ring 43 is larger than that of the mounting hole 32, so that when the winding rod 4 is operated to slide in the mounting hole 32, the stop ring 43 can limit the limit position of the sliding of the winding rod 4, and the winding rod 4 is prevented from sliding out of the mounting hole 32.

Referring to fig. 4, in order to secure initial stability of the installation string 93 wound around the winding rod 4, a fixing ring 131 is fixedly coupled to the fixing bolt 13, a winding groove 132 for winding the installation string 93 is formed between the fixing ring 131 and a bolt head of the fixing bolt 13, and a fixing member 133 for fixing a position of the installation string 93 in the winding groove 132 is further provided in the winding groove 132. Meanwhile, a second threading hole 34 for the installation rope 93 to pass through from the installation groove 31 is formed on one side of the installation rod 3 facing the fixing bolt 13. After the installation rope 93 passes through the reversing slot 42, the installation rope 93 passes through the second threading hole 34 and is wound in the winding slot 132 on the fixing bolt 13, and the installation rope 93 can be clamped in the winding slot 132 through the fixing piece 133, so that the installation rope 93 between the winding rod 4 and the fixing bolt 13 is in a tensioning state, and the initial firmness of the installation rope 93 wound on the winding rod 4 is ensured.

The fixing member 133 may be an O-ring, or may be another elastic member 12 such as a spring, which can abut against the position of the mounting cord 93 in the winding groove 132 under its own elastic force.

In order to prevent the winding rod 4 from being reversed under the tension of the implant 92 when the implant 92 is fixed after the surgeon rotates the winding rod 4 to pull the implant 92 to a preset tension, so that the initial tension of the implant 92 is changed, fixing devices 5 for locking the mounting rod 3 in one direction are further provided on the winding rod 4 and the mounting rod 3.

Referring to fig. 5, a placing groove 35 is opened on the outer wall of the mounting rod 3, the fixing device 5 comprises a ratchet wheel 51 fixedly connected to the winding rod 4 and a pawl 52 hinged to the side wall of the placing groove 35 and engaged with the ratchet wheel 51, a supporting spring 53 is fixedly connected between the pawl 52 and the bottom wall of the placing groove 35, and a hinge point of the pawl 52 and the side wall of the placing groove 35 is located between the supporting spring 53 and the ratchet wheel 51. Under the normal state, under the action of the elastic force of the supporting spring 53, the pawl 52 abuts against the ratchet wheel 51, so that the winding rod 4 can only rotate in one direction, and a doctor can rotate the winding rod 4 to wind the installation rope 93 on the winding rod 4 conveniently. When the tension for pulling the implant 92 reaches the set value, the doctor can fix the implant directly, and the pawl 52 abuts against the ratchet 51 to prevent the winding rod 4 from reversing, so that the winding rod 4 is not reversed by the tension of the installation rope 93, and the tension of the implant 92 is ensured to be unchanged when the implant 92 is fixed.

When the winding relation between the installation rope 93 and the winding rod 4 needs to be released, one end of the pawl 52 far away from the ratchet wheel 51 is directly pressed, the operating pawl 52 rotates around a hinge shaft with the side wall of the placing groove 35, the pawl 52 extrudes the supporting spring 53 to release the meshing relation with the ratchet wheel 51, and a doctor directly operates the winding rod 4 to reversely rotate.

Referring to fig. 2, in order to facilitate the rotation of the winding rod 4 by the doctor, a handle 46 is fixedly connected to one end of the winding rod 4 away from the reversing slot 42, and the doctor can directly drive the winding rod 4 to rotate through the handle 46, so that the operation is more convenient.

Referring to fig. 2, a second scale 15 is further arranged on the side wall of the fixing rod 1, the second scale 15 is located on one side of the opening end of the mounting groove 31, the length direction of the second scale 15 is consistent with the length direction of the mounting groove 31, when the mounting rope 93 is placed in the mounting groove 31 and wound on the winding rod 4, a mark is marked on the mounting rope 93, when the winding rod 4 is rotated to enable the tension value of the graft 92 to reach a preset value, the length pulled by the graft 92 can be obtained by marking the position moved on the second scale 15, a doctor can conveniently perform the next operation, and the operation is more convenient and flexible. Wherein, the second scale 15 can be directly carved on the lateral wall of the fixing rod 1, and also can be sprayed on the surface of the fixing rod 1 by coating, as long as the marking function can be achieved.

Referring to fig. 3, a fixing hole 16 for inserting the guide bar 2 is opened at one end of the fixing bar 1 facing the guide bar 2, and the fixing bar 1 and the guide bar 2 can be detachably connected by inserting the guide bar 2 into the fixing hole 16. Meanwhile, in order to fix the position of the guide rod 2 in the fixing hole 16, a connecting assembly 6 for fixing the position of the guide rod 2 in the fixing hole 16 is provided between the guide rod 2 and the fixing rod 1.

In one example of the present application, the connection assembly 6 may be a connection pin 61, and the relative position between the guide bar 2 and the fixing bar 1 may be fixed by the connection pin 61.

Referring to fig. 6, in another example of the present application, insertion grooves 62 into which the connection members 6 are inserted are formed on an inner wall of the fixing hole 16, at least two insertion grooves 62 are formed at equal intervals around the axis of the fixing rod 1, and one connection member 6 is disposed in each insertion groove 62.

The connecting assembly 6 comprises a butt spring 63 fixedly connected to the bottom of the embedded groove 62 and a butt column 64 fixedly connected to the butt spring 63 and far away from one end of the bottom of the embedded groove 62, the end, far away from the butt spring 63, of the butt column 64 is hemispherical, and meanwhile a clamping groove 65 for embedding the butt column 64 is formed in the side wall of the guide rod 2. During the installation, directly insert the guide bar 2 in the fixed orifices 16, the guide bar 2 with butt post 64 locking embedded groove 62, after inserting guide bar 2 in the fixed orifices 16, butt post 64 will stretch out embedded groove 62 embedding draw-in groove 65 under butt spring 63 spring action to fix the position of guide bar 2 in fixed orifices 16, realize being connected between guide bar 2 and the dead lever 1. When the fixing hole 16 needs to be detached, the guide rod 2 is directly pulled in the direction away from the fixing hole 16, the guide rod 2 can extrude the abutting column 64 and can be smoothly pulled out of the fixing hole 16, and the mounting and the detaching are very convenient.

Referring to fig. 2, a first threading hole 21 is formed at an end of the guide bar 2 remote from the fixing bar 1.

Specifically, referring to fig. 2, in an example of the present application, the first threading hole 21 communicates between one end of the guide rod 2 far from the fixing rod 1 and a side wall of the guide rod 2, so that when tension of the graft 92 is measured, the guide rod 2 can be directly abutted to the human knee joint, the first threading hole 21 communicates with a bone channel 91 formed in the human knee joint, and then the installation rope 93 connected with the graft 92 directly passes through the first threading hole 21 from the bone channel 91.

Referring to fig. 7, when the tension of the suture in the adjustable titanium plate needs to be detected in the AC joint reconstruction operation, or the covering force of the suture in the titanium plate needs to be detected in the tibiofibular syndesmosis operation, or the covering force of the suture in the titanium plate needs to be tested in the anterior cruciate ligament reconstruction operation, in order to improve the contact stability between the guide rod 2 and the surface of the human body, an abutting part 7 is further arranged at one end of the guide rod 2, which is far away from the fixing rod 1.

Referring to fig. 7 and 8, the abutment 7 includes an abutment ring 72 fixedly coupled to the guide bar 2, and the abutment ring 72 can increase a contact area of the guide bar 2 with a surface of a human body so that the guide bar 2 can be firmly abutted against the surface of the human body.

It will be appreciated that the shape of the abutment ring 72 may be determined according to the needs of the actual procedure, and that in different procedures the abutment ring 72 may be designed in different shapes depending on the shape of the surface of the human bone against which the abutment ring 72 abuts.

Wherein, in order to increase the frictional force on butt ring 72 and human body surface, there is protruding 73 at the one end rigid coupling that butt ring 72 deviates from guide bar 2 to stability when increasing butt ring 72 operation, protruding 73 is provided with a plurality ofly, and the equidistant distribution of axis that a plurality of protruding 73 encircle butt ring 72.

Referring to fig. 8, in another example of the present application, the first threading hole 21 may also directly penetrate through two opposite side walls of the guide rod 2, and a stop rod 74 is fixedly connected to an end of the abutment ring 72 away from the guide rod 2, which is adapted to test a tension of a suture when the primitive ligament is restored in a rotator cuff ligament injury surgery, and also adapted to test a tension of a suture when the achilles tendon is restored in an achilles tendon repair surgery, and to test a tension of a suture when the graft 92 is fixed in a knee medial-lateral accessory ligament reconstruction surgery. When the device is used, the limiting rod 74 is directly inserted into a bone channel 91 formed in a human body, the limiting plate 81 is abutted against the surface of the human body, then a suture line penetrates through the first threading hole 21 and is wound on the winding rod 4, the suture line can be pulled through the winding rod 4 to tension the graft 92, and the tension of the suture line is measured through the relative relation between the installation rod 3 and the fixing rod 1, so that the suture tension meets the operation standard.

Aiming at different operations, a doctor can directly select a proper guide rod 2 to be installed on the fixing rod 1, and the position of the guide rod 2 on the fixing rod 1 is fixed through the connecting component 6, so that the use is more flexible.

The implementation principle of the handheld tensioner in the embodiment of the application is as follows: when the graft 92 is fixed, two installation ropes 93 are respectively fixedly connected to two ends of the graft 92, the two installation ropes 93 at one end of the graft 92 are firstly fixed after penetrating out of the bone path 91, then the two installation ropes 93 at the other end of the graft 92 penetrate out of the bone path 91, one installation rope 93 at the end penetrates through the first threading hole 21 and is wound on the winding rod 4, and is finally wound in the winding groove 132, and the position of the installation rope 93 in the winding groove 132 is fixed through the fixing piece 133. The handle 46 is rotated to drive the winding rod 4 to rotate, so that the graft 92 is pulled to a proper tension value through the installation rope 93, and when the tension of the graft 92 is detected to a proper tension value through the first scale 33, the other installation rope 93 at the same end of the installation rope 93 is fixed, so that the tension state of the graft 92 can be fixed. Finally, the engagement of the ratchet 51 and the pawl 52 is directly released, the winding rod 4 is rotated in the reverse direction, the attachment cord 93 is paid out from the winding rod 4, and the attachment cord 93 is fixed. The tension of the graft 92 can be detected in real time in the operation process, so that the initial tension of the installed graft 92 is consistent with the preset tension, errors generated between the initial tension of the graft 92 and the preset tension are greatly reduced, and the influence on the postoperative operation of a patient is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A hand-held tensioner, characterized by: comprises a fixed rod (1), a guide rod (2) detachably connected to one end of the fixed rod (1), a butt part (7) fixedly connected to the guide rod (2) and far away from one end of the fixed rod (1), and a mounting rod (3) arranged at one end of the fixed rod (1) and far away from one end of the guide rod (2), wherein the fixed rod (1) faces towards one end of the mounting rod (3) and is provided with a jack (11) for the mounting rod (3) to be inserted into, the mounting rod (3) is in sliding fit with the jack (11), an elastic part (12) is arranged in the jack (11), the mounting rod (3) is driven by the elastic part (12) to slide towards the direction far away from the guide rod (2), one end of the guide rod (2) far away from the fixed rod (1) is provided with a first threading hole (21) for a mounting rope (93) connected with a graft (92) to penetrate into, the mounting rod (3) is rotatably connected with a winding rod (4) used for winding a mounting rope (93).

2. A hand-held tensioner as claimed in claim 1, wherein: the outer wall of the mounting rod (3) is provided with a first scale (33) so as to judge the position of the mounting rod (3) relative to the fixing rod (1).

3. A hand-held tensioner as claimed in claim 1, wherein: dead lever (1) with installation pole (3) lateral wall department all sets up along its length direction and supplies installation rope (93) mounting groove (31) of embedding, wire winding rod (4) are located mounting groove (31) are kept away from the one end of guide bar (2), the axis direction of wire winding rod (4) with the length direction of mounting groove (31) is perpendicular.

4. A hand-held tensioner as claimed in claim 1, wherein: the side wall of the mounting rod (3) is in threaded connection with a fixing bolt (13), and a sliding groove (14) for the fixing bolt (13) to slide is formed in the side wall of the fixing rod (1).

5. A hand-held tensioner according to claim 4, characterised in that: the gliding mounting hole (32) of confession wire winding pole (4) are seted up in installation pole (3) lateral wall department, switching-over groove (42) have been seted up to wire winding pole (4) one end, and its winding direction is changed through switching-over groove (42) to the one end that graft (92) were kept away from in installation rope (93), and when wire winding pole (4) rotated, installation rope (93) both ends were twined simultaneously on wire winding pole (4) or are pulled out from wire winding pole (4) simultaneously.

6. A hand-held tensioner according to claim 5, characterised in that: the utility model discloses a wire winding groove, including installation pole (3), installation rope (93), fixed bolt (13), fixed ring (131) and bolt head, installation pole (3) orientation the one end of fixed bolt (13) is seted up the confession second through wires hole (34) that installation rope (93) wore out, the rigid coupling has solid fixed ring (131) on fixed bolt (13), gu fixed ring (131) with form between the bolt head of fixed bolt (13) and supply installation rope (93) winding wire winding groove (132), be provided with the fixing in wire winding groove (132) installation rope (93) are in the mounting (133) of position in wire winding groove (132).

7. A hand-held tensioner according to claim 5, characterised in that: the winding rod (4) is provided with one end of the reversing groove (42) is provided with a blocking ring (43), the blocking ring (43) is fixedly connected with a connecting block (44) between one side wall of the reversing groove (42), an avoiding opening (45) for the installation rope (93) to slide into the reversing groove (42) is formed between the blocking ring (43) and the other side wall of the reversing groove (42), and the diameter of the blocking ring (43) is larger than that of the installation hole (32).

8. A hand-held tensioner as claimed in claim 1, wherein: the wire winding rod is characterized in that a ratchet wheel (51) is fixedly connected to the wire winding rod (4), a placing groove (35) is formed in the outer wall of the installing rod (3), a pawl (52) meshed with the ratchet wheel (51) is hinged to the side wall of the placing groove (35), a supporting spring (53) is fixedly connected between the pawl (52) and the bottom wall of the placing groove (35), and the supporting spring (53) is located at one side, away from the ratchet wheel (51), of the pawl (52) and the hinged point of the placing groove (35).

9. A hand-held tensioner as claimed in claim 1, wherein: the guide rod (2) and be provided with coupling assembling (6) between dead lever (1), guide rod (2) pass through coupling assembling (6) with dead lever (1) can dismantle the connection.

10. A hand-held tensioner as claimed in claim 1, wherein: the abutment member (7) comprises an abutment ring (72) fixed to the guide bar (2).