CN210447181U - In-situ rod shearing device - Google Patents
In-situ rod shearing device Download PDFInfo
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- CN210447181U CN210447181U CN201920609743.7U CN201920609743U CN210447181U CN 210447181 U CN210447181 U CN 210447181U CN 201920609743 U CN201920609743 U CN 201920609743U CN 210447181 U CN210447181 U CN 210447181U
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Abstract
The utility model provides an excellent ware is cut to normal position belongs to the operation instrument field, including handheld portion, swing mechanism, two fixture, coping saw and sealing mechanism. The swing mechanism is arranged in the handheld part and is provided with a reciprocating swing arm. Two fixture connect in handheld portion, have the centre gripping head that is used for the fixed stick of centre gripping backbone respectively, form the cutting space that is used for making the fixed stick of backbone to pass between two centre gripping heads. The fretsaw is arranged in the cutting space, is connected with the reciprocating swing arm and is used for surrounding the periphery of the spinal fixation rod. The sealing mechanism is connected with the handheld part and used for sealing the space to be cut. The clamping head of the clamping mechanism clamps the spine fixing rod, the fretsaw is used for surrounding the periphery of the spine fixing rod and realizing cutting through the reciprocating traction fretsaw of the compound swing arm, the occupied space is small, the sealing mechanism seals the cutting space, the cutting chips generated by cutting can be prevented from splashing, and the spine fixing rod is more suitable for being used in an operation.
Description
Technical Field
The utility model belongs to the technical field of the surgical instruments, more specifically say, relate to a stick ware is cut to normal position.
Background
Nowadays, scoliosis deformity correction surgery is mainly fixed by a nail-bar system. In the operation is corrected to scoliosis, need fix the fixed rod on the backbone, then restore to the throne gradually through the fixed rod with the scoliosis, wait until the backbone restores to the throne after the fixed rod can grow out a part, this part need be cut off, but at this moment the fixed rod has already fixed with the backbone, and fixed rod intensity and hardness are all great, present cut excellent instrument all than big, can't directly cut off the fixed rod of fixing on the backbone, cut out the fixed rod now and generally can only maintain the restoration of backbone through other modes, then take off the fixed rod and cut out to suitable length, fix the fixed rod again on the backbone. The process of taking down the fixed rod and then fixing again greatly prolongs the operation time and also increases the operation risk.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a stick ware is cut to normal position to solve the current shearing tool that exists among the prior art and be not suitable for directly will fix the fixed stick on the backbone and cut, can only take off the backbone fixed stick from the backbone and cut again, increased doctor's work load, prolonged operation time, increased the technical problem of operation risk.
In order to achieve the above object, the utility model adopts the following technical scheme: there is provided an in situ rod shears comprising:
a hand-held portion;
the swinging mechanism is arranged in the handheld part and is provided with a reciprocating swinging arm;
the two clamping mechanisms are connected to the same side of the handheld part and are respectively provided with a clamping head for clamping a spinal fixation rod, and a cutting space for the spinal fixation rod to pass through is formed between the two clamping heads;
the wire saw is arranged in the cutting space, two ends of the wire saw are respectively connected with the reciprocating swing arm, and the wire saw is used for surrounding the periphery of the spine fixing rod; and
and the sealing mechanism is connected with the handheld part and used for sealing the cutting space.
Further, the swing mechanism includes:
the rotating unit is arranged in the handheld part; and
the eccentric wheel is arranged on the rotating shaft of the rotating unit;
reciprocating swing arm middle part with handheld portion is articulated, both ends respectively with the both ends of coping saw are connected, reciprocating swing arm one end is equipped with the trepanning, the eccentric wheel be located the trepanning and with the inner wall slip butt of trepanning.
Further, the end of the jigsaw is detachably connected with the end of the reciprocating swing arm.
Further, the clamping mechanism includes:
one end of the extension rod is connected with the handheld part;
the two clamping arms are arranged at the other end of the extension rod to form the clamping head; and
the folding pipe is sleeved outside the extension rod, one end of the folding pipe is in threaded connection with the extension rod, the inner wall of the other end of the folding pipe is provided with a folding surface used for being sleeved on the periphery of the two clamping arms, the folding surface is a conical surface, and the outer side surfaces of the clamping arms are in sliding fit with the folding surface.
Further, the sealing mechanism includes:
the two sealing plates are respectively connected with the handheld part and respectively arranged at two sides of the cutting space in the axial direction of the spine fixing rod, and the inner side surface of each sealing plate is provided with a sliding rail arranged around the bottom of the cutting space; and
and the sealing cover is connected with the two sliding rails in a sliding manner and is used for sealing the bottom of the cutting space.
Furthermore, the sealing plate is provided with a through hole, one radial side of the through hole is opened to form a notch, and the notch is used for enabling the spine fixing rod to enter the through hole along the notch.
Further, the slide rail comprises two concentric arc sections which are respectively positioned at two sides of the notch, and the sealing plate is an arc plate and is used for reciprocating sliding between the two arc sections.
Furthermore, a push button is arranged on the handheld portion, and a push rod used for pushing the sealing cover to slide along the sliding rail is connected between the push button and the side edge of the sealing cover.
Further, the inner side of the sealing plate is provided with a flushing pipe with a spraying direction aligned with the wire saw.
Further, a pipette communicating with the cutting space is provided inside the sealing plate.
The utility model provides a stick ware is cut to normal position's beneficial effect lies in: compared with the prior art, the utility model discloses excellent ware is cut to normal position fixes the back on the backbone at the backbone fixed stick, can wear to establish in the cutting space with the unnecessary part of backbone fixed stick, then the holding head centre gripping backbone fixed stick through fixture, utilizes the coping saw to encircle the periphery of backbone fixed stick and through the reciprocal tractive coping saw of compound swing arm to cut off the backbone fixed stick, in-process, sealing mechanism seals the cutting space, can prevent that the piece that the cutting produced from splashing. The fretsaw is wound around the periphery of the spinal fixing rod for cutting, so that the occupied space is small, and the sealing mechanism is used for collecting debris and is more suitable for being used in an operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a front view of an in-situ rod shearing device provided by an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken at-A-A of FIG. 1;
fig. 3 is a cross-sectional view at B-B in fig. 1.
Wherein, in the figures, the respective reference numerals:
1-a hand-held part; 11-a push button; 12-a push rod; 21-reciprocating swing arm; 22-a rotation unit; 23-an eccentric wheel; 24-trepanning; 3-a clamping mechanism; 31-a gripping head; 32-cutting space; 33-an extension rod; 34-a clamping arm; 35-folding the tube; 36-folding and kneading; 4-wire saw; 5-a sealing mechanism; 51-a sealing plate; 511-via holes; 512-gap; 513-a flushing pipe; 514-pipette; 52-a slide rail; 53-sealing cover; 6-spinal fixation rod.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to fig. 3, a description will now be given of an in-situ rod shearing device according to an embodiment of the present invention. The in-situ bar shearing device comprises a handheld part 1, a swinging mechanism, two clamping mechanisms 3, a wire saw 4 and a sealing mechanism 5.
The swing mechanism is provided in the hand-held unit 1 and has a reciprocating swing arm 21. The two clamping mechanisms 3 are connected to the same side of the handheld portion 1, and respectively have clamping heads 31 for clamping the spinal fixation rod 6, and a cutting space 32 for allowing the spinal fixation rod 6 to pass through is formed between the two clamping heads 31. The wire saw 4 is arranged in the cutting space 32, and two ends of the wire saw are respectively connected with the reciprocating swing arms 21 and used for surrounding the periphery of the spinal fixing rod 6. A sealing mechanism 5 is connected to the handpiece 1 for closing the cutting space 32.
Compared with the prior art, the utility model discloses excellent ware is cut to normal position fixes back on the backbone at backbone fixed rod 6, can wear to establish in cutting space 32 with the unnecessary part of backbone fixed rod 6, then 31 centre gripping backbone fixed rod 6 through fixture 3, utilize coping saw 4 to encircle in the periphery of backbone fixed rod 6 and through the reciprocal tractive coping saw 4 of reciprocal swing arm 21, thereby cut off backbone fixed rod 6, in-process, sealing mechanism 5 seals cutting space 32, can prevent that the piece that the cutting produced from splashing. The fretsaw 4 is arranged around the periphery of the spinal fixing rod 6 for cutting, the occupied space is small, and the sealing mechanism 5 is used for collecting debris, so that the fretsaw is more suitable for being used in an operation.
Specifically, the rear end of the hand-held portion 1 is used for holding, and the swing mechanism and the two gripping mechanisms 3 are both connected to the front end of the hand-held portion 1. Both ends of the wire saw 4 are connected to both ends of the reciprocating swing arm 21 through wires, respectively. The respective outside of two fixture 3 still coats the protection handheld portion that is connected with handheld portion 1, prevents that external object from disturbing fixture 3.
Referring to fig. 1 and 2 together, as an embodiment of the in-situ bar shearing device provided by the present invention, the swing mechanism includes a rotating unit 22 and an eccentric wheel 23.
The rotation unit 22 is provided in the hand-held portion 1. The eccentric wheel 23 is provided on the rotation shaft of the rotation unit 22. The middle part of the reciprocating swing arm 21 is hinged with the handheld part 1, two ends of the reciprocating swing arm are respectively connected with two ends of the wire saw 4, one end of the reciprocating swing arm 21 is provided with a sleeve hole 24, and the eccentric wheel 23 is positioned in the sleeve hole 24 and is in sliding abutting joint with the inner wall of the sleeve hole 24.
Specifically, the rotation unit 22 may employ a motor and a speed reducer connected to the motor, and the eccentric wheel 23 is connected to an output shaft of the speed reducer. The eccentric wheel 23 is driven to rotate by the rotating unit 22, so that the eccentric wheel 23 slides along the inner wall of the sleeve hole 24, and the reciprocating swing arm 21 is driven to swing back and forth around the rotating shaft of the reciprocating swing arm. The wire saw 4 is wound around the spine fixing rod 6, and both ends of the wire saw are fixed to both ends of the reciprocating swing arm 21. The reciprocating oscillating arm 21 oscillates to pull the wire saw 4 back and forth, thereby cutting the spinal fixation rod 6.
As a specific implementation mode of the in-situ bar shearing device provided by the utility model, the end part of the wire saw 4 is detachably connected with the end part of the reciprocating swing arm 21. This arrangement can be achieved by disconnecting the end of the jigsaw 4 from the end of the reciprocating oscillating arm 21, then looping the jigsaw 4 around the spinal fixation rod 6 in the cutting space 32, and finally connecting the end of the jigsaw 4 to the end of the reciprocating oscillating arm 21.
Specifically, the end of the jigsaw 4 is provided with a hook, the end of the corresponding reciprocating swing arm 21 is provided with a hook hole, and the end of the jigsaw 4 is detachably connected with the end of the reciprocating swing arm 21 through hooking the hook into the hook hole. More specifically, the end of the wire saw 4 is connected to the end of the reciprocating oscillating arm 21 by a tension spring. So that when the wire saw 4 cuts the spine fixing rod 6, the extension spring pulls the wire saw 4 to maintain the pressure of the wire saw 4 on the spine fixing rod 6.
Referring to fig. 1 and 3 together, as an embodiment of the in-situ bar shearing device of the present invention, the clamping mechanism 3 includes an extension rod 33, two clamping arms 34 and a folding tube 35.
One end of the extension rod 33 is connected with the handheld part 1. Two clamping arms 34 are provided on the other end of the extension rod 33 to form the clamping head 31. The folding tube 35 is sleeved outside the extension rod 33, one end of the folding tube is connected with the extension rod 33 through a thread, the inner wall of the other end of the folding tube is provided with a folding surface 36 for being sleeved on the periphery of the two clamping arms 34, the folding surface 36 is a conical surface, and the outer side surfaces of the clamping arms 34 are in sliding fit with the folding surface 36.
Specifically, the extension rod 33 is a long straight rod, the upper end of which is fixed on the handheld portion 1 and the periphery of which is provided with threads, and the lower end of which is provided with two clamping arms 34. The folding pipe 35 is a long straight pipe, which is coaxially sleeved outside the extension rod 33, and the inner wall of the upper end of the folding pipe is provided with a thread connected with the upper end of the extension rod 33. The lower end of the folding pipe 35 is in a bell mouth shape, and the inner wall forms a folding surface 36. The folding tube 35 is rotated to slide the folding tube 35 downwards, the folding surface 36 at the lower end of the folding tube 35 is sleeved on the peripheries of the two clamping arms 34, the folding tube 35 is continuously rotated to slide the folding tube 35 downwards, so that the folding surface 36 pushes the outer side surfaces of the clamping arms 34, and the two clamping arms 34 are close to each other to clamp the middle spine fixing rod 6.
Referring to fig. 1 and 2 together, as an embodiment of the in-situ rod shearing device provided by the present invention, the sealing mechanism 5 includes two sealing plates 51 and a sealing cover 53.
Two sealing plates 51 are respectively connected with the handheld part 1 and respectively arranged at two sides of the cutting space 32 in the axial direction of the spine fixing rod 6, and a sliding rail 52 arranged around the bottom of the cutting space 32 is arranged at the inner side surface of each sealing plate 51. The covers 53 are slidably connected to the two slide rails 52, respectively, for closing the bottom of the cutting space 32.
Specifically, two sealing plates 51 are parallel to each other, and the upper end of each sealing plate 51 is fixed to the hand-held portion 1. The two sealing plates 51 are oppositely arranged, the inner sides in opposite directions are respectively provided with a sliding rail 52, the sealing cover 53 is positioned between the two sealing plates 51, and two ends in the axial direction of the spine fixing rod 6 are respectively in sliding connection with the two sliding rails 52, so that the sealing cover 53 can slide to the lower part of the cutting space 32 along the sliding rails 52, the bottom of the cutting space 32 is sealed, and chips generated by cutting of the wire saw 4 can be collected.
More specifically, the sealing plate 51 may be an inner side plate of the protective hand grip outside the clamping mechanism 3.
Referring to fig. 2, as a specific embodiment of the in-situ rod shearing device provided by the present invention, a through hole 511 is formed on the sealing plate 51, a radial side of the through hole 511 is opened to form a notch 512, and the notch 512 is used for allowing the spinal fixation rod 6 to enter the through hole 511 along the notch 512.
Specifically, the opening direction of the notch 512 is the same as the opening direction of the clamping gap between the two clamping arms 34. More specifically, the opening direction of the clamping gap of the two clamping arms 34 is downward, and the opening direction of the opening notch 512 is downward, so that the spine fixing rod 6 can enter the through hole 511 from the notch 512 from below, and meanwhile, the spine fixing rod 6 also enters the clamping gap between the two clamping arms 34.
Referring to fig. 1 and 2 together, as a specific embodiment of the in-situ bar shearing device provided by the present invention, the sliding rail 52 includes two concentric arc sections respectively located at two sides of the gap 512, and the sealing plate 51 is an arc plate for reciprocating sliding between the two arc sections.
Specifically, the plate surface of the sealing plate 51 is a curved surface, and the sealing plate 51 may be made by bending a hard plate into a curved surface. The slide rail 52 is circular and is cut into two sections by the notch 512. The bottom of the cutting space 32 is closed by the sealing plate 51 being slidable along the slide rail 52 over the notch 512. The sealing plate 51 may also be removed from the gap 512 to allow the spinal fixation rod 6 to pass freely through the gap 512.
Referring to fig. 1 and fig. 2 together, as a specific embodiment of the in-situ bar shearing device provided by the present invention, a push button 11 is disposed on the handheld portion 1, and a push rod 12 for pushing the sealing cover 53 to slide along the slide rail 52 is connected between the push button 11 and the side edge of the sealing cover 53. The bottom of the cutting space 32 is closed by pushing the push button 11, and thus the cover 53, by the push rod 12, to slide along the slide rail 52.
Referring to fig. 1 and 2 together, as an embodiment of the in-situ bar shearing device of the present invention, a flushing pipe 513 is disposed inside the sealing plate 51 and has a spraying direction aligned with the wire saw 4. The flushing pipe 513 may be connected to a physiological saline pump, and the temperature of the wire saw 4 can be lowered by spraying physiological saline to the wire saw 4 through the flushing pipe 513. In this embodiment, the cover 53 is slidably connected to the slide rail 52, so that the cover 53 can slide along the slide rail 52 to the position below the cutting space 32 to close the bottom of the cutting space 32, and the cover 53 can collect the liquid sprayed from the washing pipe 513. More specifically, the middle portion of the cap 53 may be recessed downward to form a recess for receiving liquid sprayed from the rinse tube 513.
Referring to fig. 1, as an embodiment of the in-situ bar shearing device of the present invention, a pipette 514 is disposed inside the sealing plate 51 and is communicated with the cutting space 32. The pipette 514 is communicated with the negative pressure pump, so that the liquid such as blood, physiological saline and the like in the cutting space 32 can be sucked through the pipette 514, and a doctor can observe the condition in the cutting space 32 more conveniently.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An in situ rod shears, comprising:
a hand-held part (1);
a swing mechanism provided in the hand-held section (1) and having a reciprocating swing arm (21);
the two clamping mechanisms (3) are connected to the same side of the handheld part (1) and are respectively provided with a clamping head (31) used for clamping a spinal fixation rod (6), and a cutting space (32) used for enabling the spinal fixation rod (6) to pass through is formed between the two clamping heads (31);
the wire saw (4) is arranged in the cutting space (32), two ends of the wire saw are respectively connected with the reciprocating swing arm (21) and used for surrounding the periphery of the spine fixing rod (6); and
a sealing mechanism (5) connected with the hand-held part (1) for closing the cutting space (32).
2. The in situ bar shear of claim 1, wherein the oscillating mechanism comprises:
a rotation unit (22) provided in the hand-held portion (1); and
an eccentric wheel (23) arranged on a rotating shaft of the rotating unit (22);
reciprocal swing arm (21) middle part with handheld portion (1) is articulated, both ends respectively with the both ends of coping saw (4) are connected, reciprocal swing arm (21) one end is equipped with trepanning (24), eccentric wheel (23) are located in trepanning (24) and with the inner wall slip butt of trepanning (24).
3. The in situ rod shear of claim 2, wherein: the end part of the wire saw (4) is detachably connected with the end part of the reciprocating swing arm (21).
4. The in situ bar shear of claim 1, wherein the clamping mechanism (3) comprises:
an extension rod (33) with one end connected with the handheld part (1);
two clamping arms (34) arranged on the other end of the extension rod (33) to form the clamping head (31); and
the folding pipe (35) is sleeved outside the extension rod (33), one end of the folding pipe is in threaded connection with the extension rod (33), the inner wall of the other end of the folding pipe is provided with a folding surface (36) used for being sleeved on the periphery of the two clamping arms (34), the folding surface (36) is a conical surface, and the outer side surfaces of the clamping arms (34) are in sliding fit with the folding surface (36).
5. The in situ bar shear of claim 1, wherein the sealing mechanism (5) comprises:
the two sealing plates (51) are respectively connected with the handheld part (1) and respectively arranged at two sides of the cutting space (32) in the axial direction of the spine fixing rod (6), and the inner side surface of each sealing plate (51) is provided with a sliding rail (52) arranged around the bottom of the cutting space (32); and
and the cover (53) is connected with the two sliding rails (52) in a sliding manner and is used for closing the bottom of the cutting space (32).
6. The in situ rod shear of claim 5, wherein: the spine fixing rod is characterized in that a through hole (511) is formed in the sealing plate (51), a notch (512) is formed by opening one radial side of the through hole (511), and the notch (512) is used for enabling the spine fixing rod (6) to enter the through hole (511) along the notch (512).
7. The in situ rod shear of claim 6, wherein: the sliding rail (52) comprises two concentric arc sections which are respectively positioned at two sides of the notch (512), and the sealing plate (51) is an arc plate and is used for reciprocating sliding between the two arc sections.
8. The in situ bar shear of any of claims 5 to 7, wherein: the handheld part (1) is provided with a push button (11), and a push rod (12) used for pushing the sealing cover (53) to slide along the sliding rail (52) is connected between the push button (11) and the side edge of the sealing cover (53).
9. The in situ bar shear of any of claims 5 to 7, wherein: and a flushing pipe (513) with the spraying direction aligned with the wire saw (4) is arranged on the inner side of the sealing plate (51).
10. The in situ bar shear of any of claims 5 to 7, wherein: the inner side of the sealing plate (51) is provided with a pipette (514) communicated with the cutting space (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920609743.7U CN210447181U (en) | 2019-04-29 | 2019-04-29 | In-situ rod shearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920609743.7U CN210447181U (en) | 2019-04-29 | 2019-04-29 | In-situ rod shearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210447181U true CN210447181U (en) | 2020-05-05 |
Family
ID=70430024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920609743.7U Active CN210447181U (en) | 2019-04-29 | 2019-04-29 | In-situ rod shearing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210447181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110051419A (en) * | 2019-04-29 | 2019-07-26 | 河北瑞鹤医疗器械有限公司 | Cut stick device in original position |
-
2019
- 2019-04-29 CN CN201920609743.7U patent/CN210447181U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110051419A (en) * | 2019-04-29 | 2019-07-26 | 河北瑞鹤医疗器械有限公司 | Cut stick device in original position |
| CN110051419B (en) * | 2019-04-29 | 2024-05-14 | 河北医科大学第三医院 | In-situ rod shearing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ding Wenyuan Inventor after: Li Yan Inventor after: Shao Cang Inventor after: Wang Hui Inventor after: Yang Dalong Inventor after: Ma Lei Inventor after: Li Ruoyu Inventor before: Ding Wenyuan Inventor before: Li Yan Inventor before: Shao Cang Inventor before: Wang Hui Inventor before: Yang Dalong Inventor before: Ma Lei Inventor before: Li Ruoyu |
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| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210121 Address after: 050000 No. 139 Ziqiang Road, Qiaoxi District, Shijiazhuang City, Hebei Province Patentee after: THE THIRD HOSPITAL OF HEBEI MEDICAL University Patentee after: HEBEI RUIHE MEDICAL EQUIPMENT Co.,Ltd. Address before: 050000 599 Qinling Mountains Avenue, Shijiazhuang high tech Zone, Hebei Patentee before: HEBEI RUIHE MEDICAL EQUIPMENT Co.,Ltd. |
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| TR01 | Transfer of patent right |