CN110897660B - Push-pull rod driving device - Google Patents
Push-pull rod driving device Download PDFInfo
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- CN110897660B CN110897660B CN201911382064.1A CN201911382064A CN110897660B CN 110897660 B CN110897660 B CN 110897660B CN 201911382064 A CN201911382064 A CN 201911382064A CN 110897660 B CN110897660 B CN 110897660B
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- transmission rod
- fixed body
- gasket
- screw
- screw body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a push-pull rod driving device, which comprises a first transmission rod, a second transmission rod, a first fixed body, a second fixed body, a first screw body and a second screw body, wherein the first fixed body and the second fixed body are both of hollow cylindrical structures and are connected into a whole through a common shaft center, the diameters of the first fixed body and the second fixed body are sequentially reduced, meshing parts are respectively arranged on the surfaces, deviating from each other, of the first transmission rod and the second transmission rod and are clamped together in the first fixed body and the second fixed body, and the meshing parts of the first fixed body and the second fixed body are arranged on the circumferential surfaces of the first fixed body and the second fixed body and are driven by the first screw body and the second screw body to enable linear displacement.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a push-pull rod driving device which is suitable for driving two rod pieces in a miniature precise surgical instrument to move linearly relatively.
Technical Field
The traditional micro surgical instrument adopts a screw transmission mechanism to drive a knife tube to do linear motion, only one knife tube can be driven to do linear motion, and the other knife tube is a relative fixed part. When the operation needs to use two cutter bars to respectively drive the movable part at the front end of the cutter tube to move through linear motion, the existing cutter tube-screw transmission structure is not suitable any more, and the existing driving structure is not a transmission mechanism for respectively driving the two cutter bars in the same cutter tube, so that a new structure is urgently needed to be introduced.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a push-pull rod driving device which can respectively drive two rod pieces which are arranged side by side to move linearly relatively. Furthermore, the push-pull rod driving device of the device is detachably connected with the cutter bar, so that the disposable cutter bar is convenient to replace, and the sanitary use of surgical instruments is facilitated.
The technical scheme of the invention is as follows: a push-pull rod driving device comprises a first transmission rod, a second transmission rod, a first fixed body, a second fixed body, a first screw body and a second screw body, wherein the first fixed body and the second fixed body are of hollow cylindrical structures and are connected into a whole through a common axis, the diameters of the first fixed body and the second fixed body are sequentially decreased, meshing parts are respectively arranged on the surfaces, deviating from each other, of the first transmission rod and the second transmission rod, the first transmission rod and the second transmission rod are clamped together in the first fixed body and the second fixed body along the axis, a strip-shaped notch I is arranged on one side, facing away from the second transmission rod, of the first transmission rod, a strip-shaped notch II is arranged on one side, facing away from the first transmission rod, of the second fixed body, the second fixed body is provided with a strip-shaped notch II, the meshing parts of the first transmission rod and the second transmission rod are exposed to the circumferential surfaces of the first fixed body and the second fixed body respectively from the notch II, and are sequentially sleeved on the first fixed body, the second fixed body, and the first fixed body, The inner circumferences of the first screw body and the second screw body on the outer circumference of the second fixed body are meshed; the first screw body and the second screw body can rotate around the first fixed body and the second fixed body and are relatively limited along the axial direction of the first fixed body and the second fixed body;
one ends of the first transmission rod and the second transmission rod, which are far away from the first screw body and the second screw body, are respectively provided with a pair of first petal-shaped bodies and a pair of second petal-shaped bodies which are arranged at intervals along the axial direction, the first petal-shaped bodies and the second petal-shaped bodies are protruded along the radial direction of the first transmission rod and the second transmission rod, and the second petal-shaped bodies are provided with notches for the first transmission rod to pass through.
Furthermore, one end of the first fixed body and one end of the second fixed body are respectively provided with a first annular clamping groove and a second annular clamping groove, the second gasket and the third gasket are respectively clamped in the first annular clamping groove and the second annular clamping groove, the inner peripheries of the first screw body and the second screw body are respectively provided with a reducing step which is matched with the second gasket and the third gasket, the ring cover is in threaded connection with the first screw body or the second screw body, and the reducing steps and the first screw body or the second screw body are arranged on two sides of the second gasket or the third gasket to axially fix the first screw body or the second screw body along the first fixed body.
Preferably, the second gasket has a tongue extending into the first cutout.
Optionally, the third gasket is also provided with a tongue extending into the second cutout.
Preferably, the second gasket and the third gasket are both provided with radially extending gaps, so that the second gasket and the third gasket can stretch and retract along the radial direction.
Preferably, the first transmission rod and the second transmission rod are detachably connected with the two cutter bars provided with the Y-shaped fork claws through the first petal-shaped bodies and the second petal-shaped bodies, the thickness of the Y-shaped fork claws is smaller than the distance between a pair of the first petal-shaped bodies or a pair of the second petal-shaped bodies which are mutually separated, and the distance between fork heads of the Y-shaped fork claws is larger than the thickness of the first transmission rod and the second transmission rod.
Preferably, the peripheries of the first screw body and the second screw body are both provided with annular clamping grooves, gaskets are sleeved outside the annular clamping grooves, and the gaskets are relatively connected and fixed with the first fixed body or the second fixed body through connecting pieces.
The first screw body and the second screw body are axially fixed relative to the first fixed body and the second fixed body, can rotate around the circumferences of the first fixed body and the second fixed body, and can respectively drive the first transmission rod and the second transmission rod in the first fixed body and the second fixed body to move along a straight line; when the first transmission rod and the second transmission rod are arranged in a base plate or a knife tube in a medical instrument, the movable parts at the front ends of the first transmission rod and the second transmission rod can be pushed to rotate relative to the knife tube or the base plate. The defect that a transmission mechanism in the prior medical instrument technology can only drive one cutter bar to move in a cutter tube or a base plate is overcome. Two cutter arbor are connected with first transfer line and second transfer line can be dismantled through respective "Y" style of calligraphy fork claw respectively, conveniently change disposable cutter arbor, do benefit to surgical instruments's sanitary use, make drive arrangement repeatedly usable, have practiced thrift the cost.
Other design advantages of the device are further detailed in the detailed description.
Drawings
Fig. 1 is a schematic structural view of a push-pull rod driving device according to the present invention;
FIG. 2 is a schematic view of the assembly of the transmission rod of the push-pull rod driving device according to the present invention;
fig. 3 is a schematic view of the assembly of the fixing body and the transmission rod of the push-pull rod driving device according to the present invention;
fig. 4 is a schematic view of the assembly of the fixed body of the push-pull rod driving device according to the present invention;
FIG. 5 is a schematic view of a screw structure of a push-pull rod driving device according to the present invention
Fig. 6 is a schematic structural view of a push-pull rod driving apparatus according to embodiment 3 of the present invention;
fig. 7 is a schematic view of an assembly of a transmission rod of a push-pull rod driving apparatus according to embodiment 3 of the present invention;
fig. 8 is a schematic view of the assembly of the fixing body and the transmission rod of the push-pull rod driving device according to embodiment 3 of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
assembly as shown in fig. 1, 2, 3, 4: a push-pull rod driving device comprises a first transmission rod 53, a second transmission rod 63, a first fixing body 70 and a second fixing body 71 which are connected into a whole through a common shaft center, wherein the first fixing body 70 and the second fixing body 71 are both hollow cylindrical structures, the diameters of the first fixing body 70 and the second fixing body 71 are sequentially reduced, the surfaces, which are opposite to each other, of the first transmission rod 53 and the second transmission rod 63 are respectively provided with a meshing part 54, the first fixing body 70 and the second transmission rod 63 are fixedly clamped together by the first fixing body 70 and the second fixing body 71, one side, which is opposite to the second transmission rod 63, of the first fixing body 70 is provided with a strip-shaped first cut 74, one side, which is opposite to the first transmission rod 53, of the second fixing body 71 is provided with a strip-shaped second cut 75, the meshing parts 54 of the first transmission rod 53 and the second transmission rod 63 are respectively exposed to the circumferential surfaces of the first fixing body 70 and the second fixing body 71 from the first cut 74 and the second cut 75, the first fixed body 70 and the second fixed body 71 are respectively sleeved with a first screw 81 and a second screw 82 at the periphery thereof for the first transmission rod 53 and the second transmission rod 63 to linearly move left and right.
The first and second screw members 81 and 82 have threads on their inner peripheries that engage with the engaging portion 54, and the first and second screw members 81 and 82 are rotatable about the first and second fixed bodies 70 and 71 and are axially retained along the first and second fixed bodies 70 and 71.
Those skilled in the art will readily appreciate that the axial position of the first and second screw bodies 81 and 82 along the first and second fixed bodies 70 and 71 may be varied, including any of the following:
example 1
One end of the first fixed body 70 and one end of the second fixed body 71 are respectively provided with a first annular clamping groove 77 and a second annular clamping groove 78, the second gasket 102 is clamped in the first annular clamping groove 77, referring to fig. 5a and 5b, the inner circumference of the first screw 81 is provided with a reducing step 83 matched with the second gasket 102, a ring cover in threaded connection with the first screw 81, and the reducing step 83 and the first screw 81 are fixed on two sides of the second gasket 102 along the axial direction of the first fixed body 70. The third gasket 103 is clamped in the second annular clamping groove 78, the inner circumference of the second screw body 82 is provided with a reducing step 83 matched with the third gasket 103, a ring cover in threaded connection with the second screw body 82 and the reducing step 83 are used together to fix the second screw body 82 on two sides of the third gasket 103 along the axial direction of the second fixing body 71. The second spacer 102 has a tongue 105 extending into the first slit 74 for preventing the first transmission rod 53 from passing through the first screw 81 and impacting against the second screw 82, and optionally, the third spacer 103 is also provided with a tongue 105 extending into the second slit 75 for spacing the second fixed bodies 71 on both sides of the second transmission rod 63, preventing the second fixed bodies 71 from clamping the second transmission rod 63, and preventing the second transmission rod 63 from passing through one end of the second screw 82 away from the first screw 81.
The second spacer 102 and the third spacer 103 are both provided with a radially extending gap 106, so that the second spacer 102 and the third spacer 103 can be radially stretched and contracted to be clamped in the first annular clamping groove 77 or the second annular clamping groove 78.
Example 2
As will be easily understood, the device for preventing the first screw 81 and the second screw 82 from moving relatively along the axis of the first fixed body 70 and the second fixed body 71 may further include a ring-shaped slot provided at the outer periphery of the first screw 81 and the second screw 82, and a washer clamped in the ring-shaped slot, where the washer is fixed to the first fixed body 70 or the second fixed body 71 by a connection member, that is, when the first screw 81 and the second screw 82 rotate circumferentially around the first fixed body 70 and the second fixed body 71, the washer is not moved, so that the first screw 81 and the second screw 82 cannot move axially along the first fixed body 70 and the second fixed body 71, and the first transmission rod 53 and the second transmission rod 63 are pushed to move linearly.
Example 3
Based on the device of embodiment 1 and embodiment 2, as shown in fig. 6, 7 and 8, the first transmission rod 53 and the second transmission rod 63 are respectively provided with a pair of first petals 56 and a pair of second petals 66 spaced from each other along the axial direction at one end away from the first screw 81 and the second screw 82, the first petals 56 and the second petals 66 both protrude along the radial direction of the first transmission rod 53 and the second transmission rod 63, and the second petals 66 are provided with notches for the first transmission rod 53 to pass through. The first transmission rod 53 and the second transmission rod 63 are detachably connected with two knife bars 51 or 61 provided with Y- shaped fork claws 52 or 62 through the first petals 56 and the second petals 66, the thickness of the Y- shaped fork claws 52 or 62 is smaller than the distance between a pair of the first petals 56 or a pair of the second petals 66 which are spaced from each other, and the distance between the fork heads of the Y- shaped fork claws 52 or 62 is larger than the thickness of the first transmission rod 53 and the second transmission rod 63. The two knife bars 51 or 61 are detachably connected with the first transmission rod 53 and the second transmission rod 63 through respective Y- shaped fork claws 52 or 62, so that the disposable knife bars are convenient to replace, the sanitary use of surgical instruments is facilitated, the driving device can be reused, and the cost is saved.
The first transmission rod 53 and the second transmission rod 63 of the present invention are widely applied, and are not limited to being disposed in a knife tube or a base plate for performing an operation, and the movable members at the front ends of the first transmission rod 53 and the second transmission rod 63 are pushed to rotate relative to the knife tube or the base plate.
Claims (7)
1. A push-pull rod driving device comprises a first transmission rod, a second transmission rod, a first fixed body, a second fixed body, a first screw body and a second screw body, and is characterized in that the first fixed body and the second fixed body are both hollow cylindrical structures and are connected into a whole through a common axis, the diameters of the first fixed body and the second fixed body are sequentially decreased, meshing parts are respectively arranged on the surfaces of the first transmission rod and the second transmission rod, which are deviated from each other, and are clamped and fixed together in the first fixed body and the second fixed body along the axis, a strip-shaped notch I is arranged on one side of the first transmission rod, which is opposite to the second transmission rod, of the first fixed body, a strip-shaped notch II is arranged on one side of the second transmission rod, which is opposite to the first transmission rod, of the second fixed body, so that the meshing parts of the first transmission rod and the second transmission rod are respectively exposed to the circumferential surfaces of the first fixed body and the second fixed body from the notch II, the first fixed body and the second fixed body are sleeved with the first screw body and the second screw body in sequence; the first screw body and the second screw body can rotate around the first fixed body and the second fixed body and are relatively limited along the axial direction of the first fixed body and the second fixed body;
one ends of the first transmission rod and the second transmission rod, which are far away from the first screw body and the second screw body, are respectively provided with a pair of first petal-shaped bodies and a pair of second petal-shaped bodies which are arranged at intervals along the axial direction, the first petal-shaped bodies and the second petal-shaped bodies are protruded along the radial direction of the first transmission rod and the second transmission rod, and the second petal-shaped bodies are provided with notches for the first transmission rod to pass through.
2. The push-pull rod driving device according to claim 1, wherein: one end of the first fixed body and one end of the second fixed body are respectively provided with a first annular clamping groove and a second annular clamping groove, the second gasket and the third gasket are respectively clamped in the first annular clamping groove and the second annular clamping groove, the inner peripheries of the first screw body and the second screw body are respectively provided with a reducing step matched with the second gasket and the third gasket, the ring cover is in threaded connection with the first screw body or the second screw body, and the reducing steps and the first screw body or the second screw body are arranged on the two sides of the second gasket or the third gasket to axially fix the first screw body or the second screw body along the first fixed body.
3. The push-pull rod driving apparatus according to claim 2, wherein: the second gasket has a tongue extending into the first notch.
4. The push-pull rod driving apparatus according to claim 2, wherein: the third gasket is also provided with a tongue piece extending into the second notch.
5. A push-pull rod driving device according to any one of claims 2 to 4, wherein: and the second gasket and the third gasket are both provided with gaps extending along the radial direction, so that the second gasket and the third gasket can stretch along the radial direction.
6. The push-pull rod driving device according to claim 1, wherein: the first transmission rod and the second transmission rod are detachably connected with two cutter bars provided with Y-shaped fork claws through the first petal-shaped bodies and the second petal-shaped bodies, the thickness of the Y-shaped fork claws is smaller than the distance between a pair of first petal-shaped bodies or a pair of second petal-shaped bodies which are mutually separated, and the distance between fork heads of the Y-shaped fork claws is larger than the thickness of the first transmission rod and the second transmission rod.
7. The push-pull rod driving device according to claim 1, wherein: the peripheries of the first screw body and the second screw body are respectively provided with an annular clamping groove, a gasket is sleeved outside the annular clamping grooves, and the gasket is relatively connected and fixed with the first fixed body or the second fixed body through a connecting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911382064.1A CN110897660B (en) | 2019-12-27 | 2019-12-27 | Push-pull rod driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911382064.1A CN110897660B (en) | 2019-12-27 | 2019-12-27 | Push-pull rod driving device |
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| Publication Number | Publication Date |
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| CN110897660A CN110897660A (en) | 2020-03-24 |
| CN110897660B true CN110897660B (en) | 2021-08-03 |
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| CN201911382064.1A Active CN110897660B (en) | 2019-12-27 | 2019-12-27 | Push-pull rod driving device |
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Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070072146A1 (en) * | 2005-09-29 | 2007-03-29 | Dentsply Research And Development Corp. | Dispensing syringe having multiple barrels for discharging a dental composition |
| WO2008134812A1 (en) * | 2007-05-02 | 2008-11-13 | Endogene Pty Ltd | Apparatus for delivering shape memory alloy staples |
| US20090182196A1 (en) * | 2007-10-30 | 2009-07-16 | The Cleveland Clinic Foundation | Method and apparatus for manually guiding an endoscope |
| US8840595B2 (en) * | 2009-09-17 | 2014-09-23 | Arthrex, Inc. | Removable suction assembly for medical handpieces |
| US9113853B1 (en) * | 2011-08-31 | 2015-08-25 | Nuvasive, Inc. | Systems and methods for performing spine surgery |
| CN203662907U (en) * | 2014-01-17 | 2014-06-25 | 夏博 | Scalpel for general surgery department |
| CN104146791B (en) * | 2014-09-05 | 2016-04-06 | 黄河科技学院 | A kind of rabbit, murine retractor |
| CN205458883U (en) * | 2016-02-03 | 2016-08-17 | 南阳市第二人民医院 | But automatically controlled titanium of double -end of roll adjustment clamp |
| CN206167013U (en) * | 2016-06-29 | 2017-05-17 | 南昌理工学院 | Novel bone holding clamp |
| CN107280734A (en) * | 2017-06-29 | 2017-10-24 | 芜湖启泽信息技术有限公司 | A kind of two-way 3D ultrasonic surgical blades |
| CN107612205B (en) * | 2017-08-21 | 2019-12-20 | 北京精密机电控制设备研究所 | Electromechanical actuator and control method thereof |
| CN107714156A (en) * | 2017-09-27 | 2018-02-23 | 常州市斯博特医疗器械有限公司 | Department of general surgery's scalpel |
| TWI660133B (en) * | 2018-06-22 | 2019-05-21 | 和碩聯合科技股份有限公司 | Telescopic adjuster |
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