CN214342451U - Drag hook device for spinal surgery - Google Patents
Drag hook device for spinal surgery Download PDFInfo
- Publication number
- CN214342451U CN214342451U CN202022901865.9U CN202022901865U CN214342451U CN 214342451 U CN214342451 U CN 214342451U CN 202022901865 U CN202022901865 U CN 202022901865U CN 214342451 U CN214342451 U CN 214342451U
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- China
- Prior art keywords
- drag hook
- knob
- connecting rod
- linking arm
- retractor device
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- 238000001356 surgical procedure Methods 0.000 title claims abstract description 11
- 230000002349 favourable effect Effects 0.000 abstract description 5
- 230000000712 assembly Effects 0.000 description 11
- 238000000429 assembly Methods 0.000 description 11
- 230000000903 blocking effect Effects 0.000 description 6
- 238000003780 insertion Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 5
- 230000037431 insertion Effects 0.000 description 4
- 210000003811 finger Anatomy 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model provides a drag hook device that spinal surgery used, it includes: the distance adjusting assembly comprises two connecting arms, and the two connecting arms can move relatively; two drag hook subassemblies, respectively with two the linking arm is connected, the drag hook subassembly includes connecting rod, drag hook and knob, the knob rotationally install in the linking arm, the knob is equipped with the internal thread, the connecting rod is equipped with the external screw thread, the connecting rod is worn to locate the knob and with knob screw-thread fit, the drag hook with the end connection of connecting rod. It is rotatory the knob can be adjusted the connecting rod is followed the length that the linking arm stretches out, thereby the adjustment the drag hook arrives the distance of linking arm, from this, can adjust the degree of depth that the drag hook inserted the human body, adjust promptly the working depth of drag hook can improve the reliability that the drag hook was dialled the tissue that blocks the field of vision is favorable to reducing the operation risk.
Description
Technical Field
The utility model relates to the technical field of medical equipment, what especially relate to is a drag hook device that spinal surgery used.
Background
In spinal surgery, the surgeon typically needs to use two hooks to spread the tissue on either side of the surgical site to expose the surgical field. According to the depth of the operation position, a doctor needs to determine the depth of the draw hook inserted into the human body so as to improve the reliability of the draw hook for poking the tissues blocking the visual field.
At present, the existing drag hook is usually fixedly arranged on a distance adjuster, the drag hook has various length specifications, and a doctor needs to select the drag hook with the proper length specification according to the depth of an operation position. The selection of the retractor specification consumes operation time, and the length of the finally selected retractor cannot be well matched with the operation position, so that tissues blocking the visual field can slide out from the bottom of the retractor, the tissues are accidentally injured, and the operation risk is high.
Therefore, there is a need to provide a new retractor device for spinal surgery to solve the above problems.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned defect of prior art, the utility model provides a can adjust the drag hook device of spinal surgery usefulness of the working depth of drag hook.
The utility model provides a technical scheme that technical problem adopted as follows:
a retractor device for spinal surgery comprising: the distance adjusting assembly comprises two connecting arms, and the two connecting arms can move relatively; two drag hook subassemblies, respectively with two the linking arm is connected, the drag hook subassembly includes connecting rod, drag hook and knob, the knob rotationally install in the linking arm, the knob is equipped with the internal thread, the connecting rod is equipped with the external screw thread, the connecting rod is worn to locate the knob and with knob screw-thread fit, the drag hook with the end connection of connecting rod.
Preferably, the drag hook subassembly still includes the knob installed part, the knob installed part with linking arm fixed connection, the knob installed part is equipped with and is used for holding the chamber that holds of knob and confession the through-hole that the connecting rod passed.
Preferably, the knob mounting piece is mounted on one side, far away from the draw hook, of the connecting arm, and the connecting arm is provided with a through hole for the connecting rod to pass through.
Preferably, the through hole or the via hole is a special-shaped hole, and the cross-sectional shape of the connecting rod is matched with the shape of the through hole or the via hole.
Preferably, the drag hook subassembly still includes fastening nut, the both sides of knob installed part are equipped with the confession the breach that the knob exposed, fastening nut is equipped with the internal thread, fastening nut with connecting rod screw-thread fit, fastening nut is located keeping away from of knob installed part one side of linking arm.
Preferably, the drag hook includes vertical portion and horizontal portion, the one end of vertical portion with the connecting rod is connected, the other end with horizontal portion is perpendicular to be connected.
Preferably, the drag hook subassembly still includes the holder, the holder with the drag hook movably connects, the holder be used for with fixture is constituteed to the horizontal portion.
Preferably, the drag hook subassembly still includes the elastic component, the holder includes sliding part and clamping part, the clamping part with the sliding part be close to the one end of horizontal portion is connected perpendicularly, the one end of elastic component with the connecting rod butt, the other end with keeping away from of sliding part the one end butt of clamping part.
Preferably, the retractor assembly further comprises a guide piece, the guide piece is located on one side, far away from the sliding portion, of the vertical portion, the vertical portion is provided with a through window, guide pillars are formed on two sides of the through window, one of the guide piece and the sliding portion penetrates through the through window to be connected with the other, and guide grooves for accommodating the guide pillars are formed on two sides of the through window by the guide piece and the sliding portion.
Preferably, the holder still includes the operation portion, the operation portion with keeping away from of sliding part the one end of holder is connected perpendicularly, the operation portion passes pass through the window, the one end of keeping away from of elastic component the connecting rod with the operation portion butt, the horizontal portion is equipped with toward keeping away from a plurality of inserting points of the direction bulge of vertical portion.
Compared with the prior art, the utility model discloses mainly there is following beneficial effect:
it is rotatory the knob can be adjusted the connecting rod is followed the length that the linking arm stretches out, thereby the adjustment the drag hook arrives the distance of linking arm, from this, can adjust the degree of depth that the drag hook inserted the human body, adjust promptly the working depth of drag hook can improve the reliability that the drag hook was dialled the tissue that blocks the field of vision is favorable to reducing the operation risk.
Drawings
In order to illustrate the solution of the present application more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic view of a retractor device according to the present invention;
figure 2 is an exploded view of the retractor assembly of the present invention.
Reference numerals:
100-hook device, 10-distance adjusting component, 11-first adjusting component, 111-guide rod, 112-first connecting arm, 12-second adjusting component, 121-sliding cylinder part, 122-second connecting arm, 20-hook component, 21-connecting rod, 22-hook, 221-vertical part, 2211-through window, 2212-guide column, 222-horizontal part, 2221-insertion tip, 30-knob, 40-knob mounting part, 41-through hole, 50-fastening nut, 60-clamping part, 61-sliding part, 62-clamping part, 63-operating part, 70-elastic part and 80-guide part.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Fig. 1 is a schematic view of a retractor device 100 according to the present invention; figure 2 is an exploded view of the retractor assembly 20 of the present invention. To illustrate the mounting of the retractor assembly 20, a portion of the structure of the attachment arm is retained in FIG. 2.
As shown in fig. 1 to 2, a retractor device 100 for spinal surgery according to a preferred embodiment of the present invention includes: a distance adjustment assembly 10 and two retractor assemblies 20.
The distance adjusting assembly 10 comprises two connecting arms which can move relatively; two drag hook components 20 are connected with two linking arms respectively, and drag hook component 20 includes connecting rod 21, drag hook 22 and knob 30, and knob 30 rotationally installs in the linking arm, and knob 30 is equipped with the internal thread, and connecting rod 21 is equipped with the external screw thread, and connecting rod 21 wears to locate knob 30 and with knob 30 screw-thread fit, the end connection of drag hook 22 and connecting rod 21.
In this embodiment, based on screw drive's principle, rotate the length that knob 30 can adjust connecting rod 21 and stretch out from the linking arm to the distance of adjustment drag hook 22 to the linking arm, from this, can adjust the depth that drag hook 22 inserted the human body, adjust the depth of operation of drag hook 22 promptly, can improve drag hook 22 and dial the reliability of opening the tissue that blocks the field of vision, be favorable to reducing the operation risk.
The distance adjustment assembly 10 is used to adjust the distance between the two retractor assemblies 20. The distance adjustment assembly 10 includes two connecting arms that are movable relative to each other. Further, the two link arms can be a first link arm 112 and a second link arm 122, respectively, the second link arm 122 can move relative to the first link arm 112, and the retractor assembly 20 can be connected to the first link arm 112 or the second link arm 122. Alternatively, the first linkage arm 112 may be coupled to the retractor assembly 20 and the second linkage arm 122 may be coupled to other types of retractor mechanisms. Preferably, the retractor device 100 includes two retractor assemblies 20, the two retractor assemblies 20 are connected to the first connecting arm 112 and the second connecting arm 122, respectively, and the two retractor assemblies 20 are symmetrically installed opposite to each other.
Specifically, the distance adjustment assembly 10 includes a first adjustment member 11 and a second adjustment member 12. The first adjusting member 11 includes a guide rod 111 and a first connecting arm 112, the first connecting arm 112 is perpendicularly connected to the guide rod 111, the second adjusting member 12 includes a sliding cylinder portion 121 and a second connecting arm 122, the second connecting arm 122 is perpendicularly connected to the sliding cylinder portion 121, and the sliding cylinder portion 121 is sleeved on the guide rod 111. The sliding part 121 slides relative to the guiding rod 111, so that the distance between the first connecting arm 112 and the second connecting arm 122, i.e. the distance between the two hook assemblies 20, can be adjusted. The cross-sectional shape of the guide bar 111 may be square. The cross-sectional shape of the inner cavity of the slide cylinder portion 121 matches the cross-sectional shape of the guide bar 111, and both may be square. Thereby, the second adjusting member 12 can be prevented from rotating relative to the first adjusting member 11.
When the surgical retractor is used, the two retractor assemblies 20 can be hooked on the tissues blocking the visual field respectively, then the distance between the two retractor assemblies 20 is adjusted according to the surgical requirements, and finally the position of the sliding cylinder part 121 on the guide rod 111 is locked through the thumb screw. Therefore, a doctor can obtain a better visual field and a better surgical operation space, and the risk of spinal surgery is favorably reduced.
The two retractor assemblies 20 are connected to the two link arms, respectively. The hook assembly 20 includes a connecting rod 21, a hook 22, a knob 30, a knob mounting member 40, a fastening nut 50, a clamping member 60, an elastic member 70, and a guide member 80. Knob 30 rotationally installs in the linking arm, and knob 30 is equipped with the internal thread, and connecting rod 21 is equipped with the external screw thread, and connecting rod 21 wears to locate knob 30 and with knob 30 screw-thread fit, drag hook 22 and connecting rod 21's end connection. Based on screw drive's principle, rotate the length that knob 30 can adjust connecting rod 21 and stretch out from the linking arm to the distance of adjustment drag hook 22 to the linking arm, from this, can adjust the depth that drag hook 22 inserted the human body, adjust the depth of operation of drag hook 22 promptly, can improve drag hook 22 and dial the reliability of opening the tissue that blocks the field of vision, be favorable to reducing the operation risk.
The knob mounting member 40 is fixedly connected to the connecting arm, and the knob mounting member 40 is provided with a receiving cavity for receiving the knob 30 and a through hole 41 through which the connecting rod 21 passes. The knob mount 40 serves to constrain the position of the knob 30, and the knob 30 is rotatable within the receiving cavity of the knob mount 40. The knob mounting member 40 is mounted on a side of the connecting arm away from the hook 22, and the connecting arm is provided with a through hole for the connecting rod 21 to pass through. The knob mount 40 may be mounted to the connecting arm by screws. The connection rod 21 passes through the fastening nut 50, the knob mount 40, the knob 30, and the connection arm in sequence. The through hole 41 or the via hole is a special-shaped hole, and the cross section shape of the connecting rod 21 is matched with the shape of the through hole 41 or the via hole. Thus, the link 21 does not rotate but only moves up and down in the process of rotating the knob 30. Preferably, the thickness of the connecting arm is greater than the thickness of the knob mount 40, and the through hole of the connecting arm is a profiled hole. Both side surfaces of the connecting rod 21 are cut into a plane. The knob mounting member 40 is provided at both sides thereof with notches through which the knob 30 is exposed. The physician's finger can touch the knob 30 through the notch and rotate the knob 30. The fastening nut 50 is provided with an internal thread, the fastening nut 50 is screw-fitted with the connecting rod 21, and the fastening nut 50 is located on a side of the knob mounting member 40 away from the connecting arm. After the extension length of the connecting rod 21 is adjusted, the fastening nut 50 can be rotated, the fastening nut 50 is attached to the knob mounting part 40, and the connecting rod 21 can be prevented from moving downwards again to cause the drag hook 22 to accidentally injure human tissues.
The retractor 22 includes a vertical portion 221 and a horizontal portion 222, wherein one end of the vertical portion 221 is connected to the connecting rod 21, and the other end is vertically connected to the horizontal portion 222. In operation, the lateral portion 222 can be inserted under the tissue blocking the field of view, preventing the tissue from falling off the retractor 22, and thus improving the reliability of the tissue being pulled open. The holding member 60 is movably connected to the retractor 22, and the holding member 60 is used to form a holding mechanism with the transverse portion 222. The clip 60 is openable and closable with respect to the lateral portion 222, and forms a clipping mechanism for clipping the tissue, thereby further improving the reliability of pulling out the tissue. The clamping member 60 includes a sliding portion 61 and a clamping portion 62, the clamping portion 62 is perpendicularly connected to one end of the sliding portion 61 close to the lateral portion 222, one end of the elastic member 70 abuts against the connecting rod 21, and the other end abuts against one end of the sliding portion 61 far from the clamping portion 62. Spring 70 urges clip 60 toward transverse portion 222, and clip portion 62 and transverse portion 222 can form a grip on tissue. The elastic member 70 may be a spring. The guide 80 is located on one side of the vertical portion 221 away from the sliding portion 61, the vertical portion 221 is provided with a through window 2211, guide posts 2212 are formed on both sides of the through window 2211, one of the guide 80 and the sliding portion 61 passes through the through window 2211 to be connected with the other, and the guide 80 and the sliding portion 61 form guide grooves for accommodating the guide posts 2212 on both sides of the through window 2211. Thus, the guide slot engages the guide post 2212 and the guide 80 and clamp 60 can move up and down relative to the retractor 22. The guide 80 and the sliding portion 61 may be connected by welding. The holder 60 further includes an operating portion 63, the operating portion 63 is perpendicularly connected to an end of the sliding portion 61 away from the holder 62, the operating portion 63 passes through the passage window 2211, and an end of the elastic member 70 away from the connecting rod 21 abuts against the operating portion 63. The operation portion 63 passes through the passage window 2211, and the fingers of the surgeon can buckle the operation portion 63, so as to pull the clamping member 60 upward against the elastic force of the elastic member 70, and to separate the clamping portion 62 from the transverse portion 222, so as to insert the transverse portion 222 below the tissue. When the operating part 63 is released by the fingers of the surgeon, the elastic member 70 pushes the clamping member 60 to move downward, and the clamping part 62 and the transverse part 222 form a clamping to the tissue. The lateral portion 222 is provided with a plurality of insertion tips 2221 protruding in a direction away from the vertical portion 221. Insertion tip 2221 may be easily inserted under tissue, and may also be advantageous for hooking smaller tissue. Preferably, the transverse portion 222 is provided with two insertion tips 2221, and the two insertion tips 2221 are respectively located at both sides of the transverse portion 222.
The space between the two retractor assemblies 20 is a surgical space, and it is generally not suitable to provide too many parts between the two retractor assemblies 20 to prevent the parts from interfering with the surgeon's surgical operation. The present embodiment provides a clamping mechanism comprising a clamping member 60 and a retractor 22 for clamping the tissue in the blocked field of view. The sliding part 61 and the clamping part 62 of the clamping piece 60 are positioned on one side of the draw hook 22 far away from the operation space, the operation part 63 of the clamping piece 60 is positioned below the connecting rod 21, the clamping piece 60 does not invade the operation space, the reliability of poking out tissues blocking the visual field can be improved, the space required by the operation of a doctor can be ensured, and the clamping piece 60 has high practicability.
In this embodiment, rotate the length that the knob 30 can adjust connecting rod 21 and stretch out from the linking arm to the distance of adjustment drag hook 22 to the linking arm, from this, can adjust the depth that drag hook 22 inserted the human body, adjust the depth of operation of drag hook 22 promptly, can improve drag hook 22 and dial the reliability that blocks the tissue in field of vision, be favorable to reducing the operation risk. The retractor assembly 20 is provided with a clamping mechanism consisting of the clamping portion 62 and the transverse portion 222, so that the reliability of the retractor 22 in poking out the tissue blocking the field of view can be further improved.
It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.
Claims (10)
1. A retractor device for spinal surgery, comprising:
the distance adjusting assembly comprises two connecting arms, and the two connecting arms can move relatively;
two drag hook subassemblies, respectively with two the linking arm is connected, the drag hook subassembly includes connecting rod, drag hook and knob, the knob rotationally install in the linking arm, the knob is equipped with the internal thread, the connecting rod is equipped with the external screw thread, the connecting rod is worn to locate the knob and with knob screw-thread fit, the drag hook with the end connection of connecting rod.
2. The retractor device of claim 1 wherein,
the drag hook subassembly still includes the knob installed part, the knob installed part with linking arm fixed connection, the knob installed part is equipped with and is used for holding the chamber that holds of knob and confession the through-hole that the connecting rod passed.
3. The retractor device of claim 2 wherein,
the knob installed part install in keeping away from of linking arm one side of drag hook, the linking arm is equipped with the confession the via hole that the connecting rod passed.
4. The retractor device of claim 3 wherein,
the through hole or the via hole is a special-shaped hole, and the cross section shape of the connecting rod is matched with the shape of the through hole or the via hole.
5. The retractor device of claim 3 wherein,
the drag hook subassembly still includes fastening nut, the both sides of knob installed part are equipped with the confession the breach that the knob exposed, fastening nut is equipped with the internal thread, fastening nut with connecting rod screw-thread fit, fastening nut is located keeping away from of knob installed part one side of linking arm.
6. The retractor device of any of claims 1 to 5 wherein,
the drag hook includes perpendicular portion and horizontal portion, the one end of perpendicular portion with the connecting rod is connected, the other end with horizontal portion is perpendicular to be connected.
7. The retractor device of claim 6 wherein,
the drag hook subassembly still includes the holder, the holder with the drag hook movably connects, the holder be used for with fixture is constituteed to the horizontal portion.
8. The retractor device of claim 7 wherein,
the drag hook subassembly still includes the elastic component, the holder includes sliding part and clamping part, the clamping part with being close to of sliding part the one end of horizontal portion is connected perpendicularly, the one end of elastic component with the connecting rod butt, the other end with keeping away from of sliding part the one end butt of clamping part.
9. The retractor device of claim 8 wherein,
the draw hook assembly further comprises a guide piece, the guide piece is located on one side, far away from the sliding portion, of the vertical portion, a through window is arranged in the vertical portion, guide pillars are formed on two sides of the through window, one of the guide piece and the sliding portion penetrates through the through window to be connected with the other guide piece, and guide grooves used for containing the guide pillars are formed in two sides of the through window by the guide piece and the sliding portion.
10. The retractor device of claim 9 wherein,
the holder still includes the operation portion, the operation portion with keeping away from of sliding part the one end of holder is connected perpendicularly, the operation portion passes pass through the window, keeping away from of elastic component the one end of connecting rod with the operation portion butt, the horizontal part is equipped with toward keeping away from the convex a plurality of points of inserting of direction of perpendicular portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022901865.9U CN214342451U (en) | 2020-12-04 | 2020-12-04 | Drag hook device for spinal surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022901865.9U CN214342451U (en) | 2020-12-04 | 2020-12-04 | Drag hook device for spinal surgery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214342451U true CN214342451U (en) | 2021-10-08 |
Family
ID=77982951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022901865.9U Expired - Fee Related CN214342451U (en) | 2020-12-04 | 2020-12-04 | Drag hook device for spinal surgery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214342451U (en) |
-
2020
- 2020-12-04 CN CN202022901865.9U patent/CN214342451U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211008 |