Drive-by-wire handle device capable of self-locking and unlocking with single hand, flexible rotation and adjustable pre-tightening

Abstract

The utility model relates to the technical field of surgical instruments, and aims to solve the technical problem that single-hand operation is not convenient and flexible enough. In order to solve the technical problem, the utility model provides the drive-by-wire handle device which can be self-locked and unlocked by a single hand, can rotate flexibly and can adjust pre-tightening. The device comprises a rotating cover, a pre-tightening assembly, a handle cover body, a trigger, a connecting rod assembly and a self-locking assembly, a pulley block of the pre-tightening assembly is rotationally connected into a rotating cover, and a moving part is slidably connected to the rotating cover and connected with the pulley block. The trigger is hinged in the handle cover body; one end of the connecting rod assembly is connected with the metal wire, and the other end of the connecting rod assembly is hinged to the trigger; the self-locking assembly comprises a ratchet wheel, a pawl and an elastic piece. The ratchet wheel is connected with the handle cover and hinged to the front end of the trigger. The pawl is hinged with the trigger; one side of the pawl is meshed with the ratchet wheel, one end of the elastic piece abuts against the pawl, and the other end of the elastic piece is fixedly connected with the trigger. According to the utility model, one-hand operation and unlocking are more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to surgical instrument technical field especially is a kind of wire control handle device of single-handed self-locking, flexible rotation and adjustable pre-tightening. BACKGROUND

[0002] In the present technology, surgical instrument that can realize self-locking and 360 ° rotation has been very common.But the handle device in prior art has the problems: 1, need to unlock by finger to push top knob, single-handed operation is not enough convenient, flexible;2, metal wire is slack after long time of use, leading to poor self-locking effect. INVENTION CONTENTS

[0003] Therefore, the utility model solves the technical problem in prior art.

[0004] To solve the above technical problems, the utility model provides a kind of wire control handle device of single-handed self-locking, flexible rotation and adjustable pre-tightening, including handle part and rotatingly connected in the front end of handle part rotating wheel part;

[0005] Rotating wheel part includes: cover and pre-tightening assembly;

[0006] Pre-tightening assembly includes pulley block, metal wire around pulley block and moving part;Pulley block is rotationally connected in cover, moving part is slidingly connected in cover and is connected with pulley block, for tensioning metal wire;

[0007] Handle part includes: handle cover, trigger, connecting rod assembly and self-locking assembly.Trigger is hinged in handle cover;Connecting rod assembly is located in handle cover, one end of connecting rod assembly is connected with metal wire, the other end is hinged with trigger;Self-locking assembly includes ratchet wheel, pawl and spring;Ratchet wheel is connected with handle cover, and ratchet wheel is hinged with the front end of trigger;Pawl is hinged with trigger;The side of pawl is engaged with ratchet wheel, one end of spring is abutted on the other side of pawl, the other end of spring is fixedly connected with trigger.

[0008] In an embodiment of the utility model, handle part further includes connecting assembly, connecting assembly includes fixed head and sliding block intermediate piece, fixed head is connected with cover, and sliding block intermediate piece is connected with fixed head;Sliding block intermediate piece drives fixed head to move axially in cover, and fixed head and cover are synchronously rotated relative to sliding block intermediate piece;One end of metal wire is connected with fixed head;

[0009] In an embodiment of the utility model, the pulley block includes two first pulleys and a second pulley; the first pulley and the second pulley are rotatably connected to the rotating cover through a cylindrical pin respectively; the two first pulleys are arranged vertically; along the axial direction of the rotating cover, the second pulley is arranged on one side of the first pulley; the metal wire is arranged in an S shape on the first pulley and the second pulley; the moving part is used for adjusting the distance between the second pulley and the first pulley.

[0010] In an embodiment of the utility model, the moving part includes an adjusting screw and a sliding block; the rotating cover is provided with a guide groove, the sliding block is slidably connected in the guide groove, and the second pulley is connected to the sliding block; the adjusting screw is threadedly connected to one end of the sliding block, the head of the adjusting screw is connected to the rotating cover, the rotating cover is used for limiting the axial movement of the adjusting screw, and the adjusting screw rotates relative to the rotating cover.

[0011] In an embodiment of the utility model, the inner wall of the front end of the rotating cover is provided with a mounting groove, and the front end of the rotating cover is provided with an opening communicated with the mounting groove; the head of the adjusting screw is arranged in the mounting groove.

[0012] In an embodiment of the utility model, the connecting rod assembly includes a connecting rod one, a connecting rod two, a connecting rod three and a reset member; one end of the connecting rod one is hingedly connected to the trigger, and the other end is hingedly connected to the connecting rod two; the connecting rod two is hingedly connected to the handle cover body through a connecting pin; the reset member is sleeved on the connecting pin, and two ends of the reset member are connected to the handle cover body and the connecting rod two; two ends of the connecting rod three are respectively hingedly connected to the connecting rod two and the sliding block intermediate piece.

[0013] In an embodiment of the utility model, the end of the fixed head is provided with a through hole, one end of the metal wire passes through the through hole and is connected to the plug, and the plug abuts against the inner wall of the fixed head.

[0014] In an embodiment of the utility model, the connecting assembly includes a guide sleeve connected in the rotating cover; the guide sleeve is provided with a sliding groove, the outer wall of the fixed head is provided with a protrusion, and the protrusion is matched with the sliding groove.

[0015] In an embodiment of the utility model, a groove penetrating the wall body of the fixed head is formed; the end of the sliding block intermediate piece is connected to a rotating screw, and the head of the rotating screw is arranged in the groove.

[0016] In an embodiment of the utility model, the application further includes a connecting block; the handle part is connected to the connecting block, and the rotating wheel part is rotatably connected to the connecting block through a bearing.

[0017] In an embodiment of the utility model, the material of the metal wire is tungsten steel.

[0018] Compared with the prior art, the above technical scheme of the utility model has the following advantages:

[0019] The wire control handle device with one-hand self-locking, flexible rotation and adjustable pre-tightening function, the self-locking is realized by the cooperation of the ratchet wheel and the pawl, the ratchet wheel and the pawl are arranged on the trigger, so that the pawl can be touched by the index finger or the middle finger of the handle, and the handle can be unlocked, so that one-hand operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the content of the utility model more easily be clearly understood, the following is according to the specific embodiment of the utility model and combines the attached drawing, and the utility model is further detailed, wherein:

[0021] Figure 1 It is a three-dimensional schematic view of the wire control handle device with one-hand self-locking, flexible rotation and adjustable pre-tightening function in the preferred embodiment of the utility model;

[0022] Figure 2 For Figure 1 The front view of the wire control handle device with one-hand self-locking, flexible rotation and adjustable pre-tightening function;

[0023] Figure 3 For Figure 2 The internal structure schematic view;

[0024] Figure 4 For Figure 1 The front view of the rotating wheel part of the wire control handle device with one-hand self-locking, flexible rotation and adjustable pre-tightening function;

[0025] Figure 5 It is Figure 4 The sectional view;

[0026] Figure 6 For Figure 1 The front view of the handle part of the wire control handle device with one-hand self-locking, flexible rotation and adjustable pre-tightening function;

[0027] Figure 7 It is Figure 6 The internal schematic view;

[0028] Figure 8 It is Figure 7 The connection schematic view of the self-locking assembly and the trigger;

[0029] Figure 9 It is the connection schematic view of the connecting assembly and the wire;

[0030] Figure 10 It is the schematic view when the application is used;

[0031] Description of the Drawings: 1000, handle part;

[0032] 2000, rotating wheel part;

[0033] 100, rotating cover; 110, guide groove; 120, mounting groove; 130, opening;

[0034] 200, pre-tightening assembly; 210, pulley block; 211, first pulley; 212, second pulley; 220, wire; 230, moving part; 231, adjusting screw; 232, sliding block;

[0035] 300, handle cover;

[0036] 400, connecting rod assembly; 410, connecting rod one; 420, connecting rod two; 430, connecting rod three; 440, reset member;

[0037] 500, self-locking assembly; 510, ratchet wheel; 520, pawl; 530, elastic sheet;

[0038] 600, trigger;

[0039] 700, connecting assembly; 710, fixed head; 711, through hole; 712, plug; 713, groove; 720, sliding block intermediate piece; 730, guide sleeve; 740, rotating screw;

[0040] 800, connecting block;

[0041] 900, bearing. DETAILED DESCRIPTION

[0042] The utility model will be further described below in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0043] In some comparative examples, although self-locking can be realized, the button is located at the top of the handle, which is not convenient for one-handed operation or one-handed operation is not convenient.

[0044] Referring to Figures 1-9 The utility model embodiment provides a line control handle device that can be one-handed self-locking and unlocking, flexible rotation and adjustable pre-tightening, comprising: a handle part 1000 and a rotating wheel part 2000 connected to the front end of the handle part 1000.

[0045] The rotating part 2000 comprises a rotating cover 100 and a pre-tightening assembly 200; the pre-tightening assembly 200 comprises a pulley set 210, a wire 220 wound on the pulley set 210 and a moving part 230; the pulley set 210 is rotationally connected in the rotating cover 100, and the moving part 230 is slidingly connected in the rotating cover 100 and connected with the pulley set 210, for tensioning the wire 220;

[0046] The handle part 1000 comprises a handle cover 300, a connecting rod assembly 400, a self-locking assembly 500 and a trigger 600. The trigger 600 is hingedly connected in the handle cover 300; the connecting rod assembly 400 is arranged in the handle cover 300, one end of the connecting rod assembly 400 is connected with the wire 220, and the other end is hingedly connected with the trigger 600; the self-locking assembly 500 comprises a ratchet wheel 510, a pawl 520 and an elastic piece 530; the ratchet wheel 510 is connected with the handle cover 300 by a screw, and the ratchet wheel 510 is hingedly connected with the front end of the trigger 600; the pawl 520 is hingedly connected with the trigger 600; one side of the pawl 520 is engaged with the ratchet wheel 510, and one end of the elastic piece 530 abuts against the other side of the pawl 520, and the other end of the elastic piece 530 is fixedly connected with the trigger 600 by an elastic piece screw.

[0047] Specifically, the cooperation of the ratchet wheel 510 and the pawl 520 in the embodiment realizes self-locking, and the ratchet wheel 510 and the pawl 520 are arranged on the trigger 600, so that only the index finger or the middle finger of the hand holding the handle needs to touch the pawl 520 to unlock, and therefore single-handed operation is more convenient. Secondly, the trigger 600 in the embodiment is connected with the wire 220 through the connecting rod assembly 400, and the handle part 1000 is compact and small in structure, so that the self-locking range is small, and therefore the pre-tightening assembly 200 is arranged on the wire 220, and the pre-tightening assembly 200 can tension the wire 220, so that stable and reliable self-locking can be realized in a small self-locking range.

[0048] Further, the handle part 1000 further comprises a connecting assembly 700, which comprises a fixed head 710 and a sliding block intermediate piece 720; the fixed head 710 is connected with the rotating cover 100, and the sliding block intermediate piece 720 is connected with the fixed head 710; the sliding block intermediate piece 720 drives the fixed head 710 to move axially in the rotating cover 100, and the fixed head 710 rotates synchronously with the rotating cover 100 relative to the sliding block intermediate piece 720; one end of the wire 220 is connected with the fixed head 710. Specifically, the embodiment can realize the extension and contraction of the wire 220, and also can realize the rotation of the rotating cover 100 and the wire 220.

[0049] Further, the pulley set 210 comprises two first pulleys 211 and one second pulley 212; the first pulleys 211 and the second pulley 212 are respectively connected with the rotating cover 100 through a cylindrical pin; the two first pulleys 211 are arranged vertically; along the axial direction of the rotating cover 100, the second pulley 212 is arranged on one side of the first pulley 211; the wire 220 is arranged in an S shape on the first pulley 211 and the second pulley 212; the moving part 230 is used for adjusting the distance between the second pulley 212 and the first pulley 211. Thus, the wire 220 is tensioned, and a pre-tightening function is provided. Specifically, the first pulley 211 and the second pulley 212 of the embodiment provide support for the wire 220, which facilitates the provision of guidance for the extension and contraction of the wire 220.

[0050] Further, the moving part 230 comprises an adjusting screw 231 and a sliding block 232; the rotating cover 100 is provided with a guide groove 110, the sliding block 232 is slidingly connected in the guide groove 110, and the second pulley 212 is connected with the sliding block 232; the adjusting screw 231 is threadedly connected at one end of the sliding block 232, the head of the adjusting screw 231 is connected with the rotating cover 100, the rotating cover 100 is used for limiting the axial movement of the adjusting screw 231, and the adjusting screw 231 rotates relative to the rotating cover 100. Specifically, the sliding block 232 can be slidingly moved in the guide groove 110 by rotating the adjusting screw 231, the distance between the second pulley 212 and the first pulley 211 is adjusted, and thus the tensioning and relaxation of the wire 220 is realized, that is, the pre-tightening function is realized. The operation is convenient, and the structure is stable and reliable.

[0051] Further, the inner wall of the front end of the rotating cover 100 is provided with a mounting groove 120, and the front end of the rotating cover 100 is provided with an opening 130 communicating with the mounting groove 120; the head of the adjusting screw 231 is arranged in the mounting groove 120. Specifically, the axial movement of the adjusting screw 231 is limited by the cooperation of the head of the adjusting screw 231 and the mounting groove 120. Also, the adjusting screw 231 rotates relative to the rotating cover 100.

[0052] Further, the connecting rod assembly 400 comprises a connecting rod one 410, a connecting rod two 420, a connecting rod three 430 and a reset member 440 (torsion spring); one end of the connecting rod one 410 is hingedly connected with the trigger 600 through a pin shaft and an open check ring, and the other end is hingedly connected with the connecting rod two 420 through a pin shaft and an open check ring; the connecting rod two 420 is hingedly connected with the handle cover body 300 through a connecting pin; the reset member 440 is sleeved on the connecting pin, and both ends of the reset member 440 are connected with the handle cover body 300 and the connecting rod two 420; both ends of the connecting rod three 430 are hingedly connected with the connecting rod two 420 and the slider intermediate piece 720 through pin shafts and open check rings. Specifically, the rotation of the trigger 600 is converted into the axial movement of the axial displacement of the slider intermediate piece 720 and the extension and contraction of the wire 220 by the connecting rod one 410, the connecting rod two 420, the connecting rod three 430 and the reset member 440, so that the structure is stable and compact.

[0053] Further, the end of the fixed head 710 is provided with a through hole 711, one end of the wire 220 passes through the through hole 711 and is connected with a plug 712, and the plug 712 abuts against the inner wall of the fixed head 710. Specifically, the connection between the fixed head 710 and the wire 220 is realized by the plug 712 in the embodiment, and the structure is stable and reliable.

[0054] Further, the connecting assembly 700 comprises a guide sleeve 730 connected in the rotating cover 100; the guide sleeve 730 is provided with a sliding groove inside, and the outer wall of the fixed head 710 is provided with a protrusion matched with the sliding groove. Specifically, the fixed head 710 is connected with the rotating cover 100 through the guide sleeve 730 in the embodiment. On the one hand, the guide sleeve 730 makes the rotation of the fixed head 710 with the rotating cover 100 more smooth, and on the other hand, the guide sleeve 730 provides guidance for the axial movement of the fixed head 710 in the rotating cover 100.

[0055] Further, the fixed head 710 is provided with a groove 713 penetrating the wall body thereof; the end of the slider intermediate piece 720 is connected with a rotating screw 740, and the head of the rotating screw 740 is arranged in the groove 713. Specifically, the groove 713 and the rotating screw 740 are arranged to realize that the fixed head 710 does not affect the slider intermediate piece 720 when the fixed head 710 rotates with the rotating cover 100, and the slider intermediate piece 720 can drive the fixed head 710 to move axially in the rotating cover 100; the operation is stable and reliable.

[0056] Further, the application also comprises a connecting block 800; the handle part 1000 is connected with the connecting block 800, and the rotating wheel part 2000 is rotationally connected with the connecting block 800 through a bearing 900. The handle part 1000 and the rotating wheel part 2000 are connected through the connecting block 800. Specifically, the connecting block 800 in the embodiment realizes the connection between the rotating wheel part 2000 and the handle part 1000, and the structure is stable and reliable.

[0057] Further, the rotating cover 100 comprises a first cover body and a second cover body. The first cover body and the second cover body are connected by a plurality of connecting screws. The handle cover 300 comprises a first handle cover and a second handle cover, which are connected by connecting screws after being connected. Specifically, the handle part 1000 and the rotating wheel part 2000 are quickly assembled.

[0058] Further, the metal wire 220 is made of tungsten steel. Specifically, the tensile strength is higher and the toughness is good.

[0059] In view of the above problems, the utility model provides a wire control handle device which can be unlocked and rotated flexibly by one hand and the pre-tightening of which can be adjusted, thereby increasing the convenience, functionality and stability of the instrument.

[0060] Referring to Figures 1-10 The use process is as follows:

[0061] The trigger 600 is pulled by one hand, the trigger 600 drives the pawl 520 to rotate counterclockwise, the pawl 520 is engaged with the ratchet wheel 510 in the process of rotation, and the spring 530 is compressed in the process of rotation so as to press the pawl 520. At the same time, the axis of the slider middle piece 720 is moved under the action of the connecting rod assembly 400 when the trigger 600 rotates counterclockwise, finally the metal wire 220 is stretched and contracted, and the torsional spring is in a compressed state in the process. Until the last tooth of the pawl 520 is engaged with the ratchet wheel 510, thereby realizing self-locking.

[0062] When it is needed to be unlocked, the index finger of one hand presses the outer edge of the pawl 520, the tooth end of the pawl 520 is separated from the tooth groove of the ratchet wheel 510, the torsional spring and the spring 530 are reset, the trigger 600 and the pawl 520 return to the initial position, and the handle device realizes the unlocking function.

[0063] Therefore, when the operator pulls the trigger 600 by one hand, the closing of the jaw and the self-locking state can be adjusted, and after the index finger of one hand presses the pawl 520, the handle device can be unlocked. The operator holds the handle part 1000, twists the rotating cover 100 (R1) with the thumb and the index finger, so as to drive the rotating wheel part 2000 to rotate, that is, the flexible rotation of the rotating wheel part 2000 of the handle device is realized, so as to adjust the angle of the jaw; the operator tightens the adjusting screw 231 (R2) of the rotating wheel part 2000, so as to realize the tensioning of the metal wire 220 and ensure the closing of the jaw.

[0064] Obviously, the above embodiments are only examples for clearly illustrating, and are not limited to the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments cannot be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A wire-controlled handle device that allows for one-handed self-locking and unlocking, flexible rotation, and adjustable pretension, characterized in that: include: The handle portion and the rotating wheel portion rotatably connected to the front end of the handle portion; The rotating wheel includes: Rotary cap; The pretensioning assembly includes a pulley block, a metal wire wound on the pulley block, and a moving part; the pulley block is rotatably connected to the rotating cover; the moving part is slidably connected to the rotating cover and connected to the pulley block, for tensioning the metal wire. The handle portion includes: Handle cover; The trigger is hinged in the handle cover. A linkage assembly is disposed in the handle cover, one end of the linkage assembly is connected to the metal wire, and the other end is hinged to the trigger. The self-locking assembly includes a ratchet, a pawl, and a spring; the ratchet is connected to the handle cover and is hinged to the front end of the trigger; the pawl is hinged to the trigger; one side of the pawl engages with the ratchet, one end of the spring abuts against the other side of the pawl, and the other end of the spring is fixedly connected to the trigger.

2. The wire-controlled handle device with single-handed self-locking and unlocking, flexible rotation, and adjustable pretension as described in claim 1, characterized in that: It also includes a connecting assembly, which includes a fixing head and a slider intermediate component. The fixing head is connected to the rotating cover, and the slider intermediate component is connected to the fixing head. The slider intermediate component drives the fixing head to move axially within the rotating cover, and the fixing head and the rotating cover rotate synchronously relative to the slider intermediate component. One end of the metal wire is connected to the fixing head.

3. The wire-controlled handle device with single-handed self-locking and unlocking, flexible rotation, and adjustable pretension as described in claim 2, characterized in that: The pulley assembly includes two first pulleys and one second pulley; the first pulley and the second pulley are rotatably connected to the rotating cover by cylindrical pins; the two first pulleys are arranged vertically; along the axis of the rotating cover, the second pulley is arranged on one side of the first pulley; the metal wire is wound in an S-shape around the first pulley and the second pulley; the movable component is used to adjust the distance between the second pulley and the first pulley.

4. The wire-controlled handle device with single-handed self-locking and unlocking, flexible rotation, and adjustable pretension as described in claim 3, characterized in that: The moving component includes an adjusting screw and a slider; the rotating cover has a guide groove, the slider is slidably connected in the guide groove, and the second pulley is connected to the slider; the adjusting screw is threaded to one end of the slider, the head of the adjusting screw is connected to the rotating cover, the rotating cover is used to restrict the axial movement of the adjusting screw, and the adjusting screw rotates relative to the rotating cover.

5. The wire-controlled handle device with single-handed self-locking and unlocking, flexible rotation, and adjustable pretension as described in claim 4, characterized in that: The inner wall of the front end of the rotating cover is provided with a mounting groove, and the front end of the rotating cover is provided with an opening communicating with the mounting groove; the head of the adjusting screw is located in the mounting groove.

6. The wire-controlled handle device with single-handed self-locking and unlocking, flexible rotation, and adjustable pretension as described in claim 2, characterized in that: The linkage assembly includes a first linkage, a second linkage, a third linkage, and a reset component; one end of the first linkage is hinged to the trigger, and the other end is hinged to the second linkage; the second linkage is hinged to the handle cover via a connecting pin; the reset component is sleeved on the connecting pin, and both ends of the reset component are connected to the handle cover and the second linkage; both ends of the third linkage are hinged to the second linkage and the slider intermediate component, respectively.

7. The wire-controlled handle device with single-handed self-locking and unlocking, flexible rotation, and adjustable pretension as described in claim 2, characterized in that: The end of the fixing head is provided with a through hole, and one end of the metal wire passes through the through hole and is connected to the plug. The plug abuts against the inner wall of the fixing head.

8. The wire-controlled handle device with single-handed self-locking and unlocking, flexible rotation, and adjustable pretension as described in claim 2, characterized in that: The connecting assembly includes a guide sleeve connected to the rotating cover; the guide sleeve has a sliding groove inside, and the outer wall of the fixing head has a protrusion that cooperates with the sliding groove.

9. The wire-controlled handle device with single-handed self-locking and unlocking, flexible rotation, and adjustable pretension as described in claim 8, characterized in that: The fixed head has a groove that penetrates its wall; the end of the slider intermediate part is connected to a rotating screw, and the head of the rotating screw is located in the groove.

10. The wire-controlled handle device with single-handed self-locking and unlocking, flexible rotation, and adjustable pretension as described in claim 2, characterized in that: It also includes a connecting block; the handle portion is connected to the connecting block, and the rotating wheel portion is rotatably connected to the connecting block via a bearing.

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