CN108814662B - Simple soft tissue spreader for animal experiments - Google Patents
Simple soft tissue spreader for animal experiments Download PDFInfo
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- CN108814662B CN108814662B CN201810469725.3A CN201810469725A CN108814662B CN 108814662 B CN108814662 B CN 108814662B CN 201810469725 A CN201810469725 A CN 201810469725A CN 108814662 B CN108814662 B CN 108814662B
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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
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0206—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors with antagonistic arms as supports for retractor elements
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Abstract
The invention discloses a simple soft tissue spreader for animal experiments, wherein a screw rod is arranged on the inner wall of a screw seat, a sliding groove is arranged on the inner wall of the screw rod, the outer wall of the sliding groove is connected with the inner wall of the screw rod, the inner wall of the screw seat is movably connected with the outer wall of the sliding groove, a motor is arranged on the outer wall of the right side of the screw rod, and the inner wall of the motor is connected with the outer wall of the screw rod. This simple and easy soft tissue struts ware for animal experiments, through the motor, cooperation between lead screw and the screw seat, under the effect of spout, the motor is AC servo motor, accommodate motor's slew velocity, the service function is single, cause the extravagant shortcoming of experimental apparatus, it struts to carry out the incision with right distraction rod to the toy to have overcome current simple and easy soft tissue struts ware for animal experiments, the product quality of simple and easy soft tissue struts ware for animal experiments has been improved, user's purchasing cost has been saved, the waste of production resource has been avoided, and the device is suitable for being generalized to use.
Description
Technical Field
The invention relates to the technical field of experimental instruments, in particular to a simple soft tissue spreader for animal experiments.
Background
In animal experiments, thoraco-abdominal or dorsal incisions are often required to be opened, a good operation visual field is provided for operation, a member is usually required to be specially responsible for the draw hook, the draw hook is not fully utilized by experimenters, a plurality of animal experiments at present require a plurality of people to participate, once the member is specially responsible for the draw hook, the experiment efficiency can be influenced, the space of an operating table is occupied, and operation inconvenience is brought to other members. The existing retractor has poor effect of opening soft tissues, the soft tissues at the opening part are easy to be damaged by the retractor, the postoperative recovery of animals is not good, and the pain of animals is increased in the prior art, for example, the invention patent with application number 201420618048.4 comprises two opening rods, the two opening rods are fixedly connected to form an opening frame, the end part of each opening rod is provided with a fixing block, the opening rod is fixedly connected with an opening claw through the fixing block, the fixing block is provided with a through hole, the opening claw passes through the through hole and is matched and connected with the fixing block through a threaded hole and a fastening piece which are arranged at the side part of the fixing block, the through hole is vertical to the threaded hole, the distance between the two opening rods is 8-15cm, the fixing block and the opening frame are of an integral forming structure, the opening claw is formed by opening hooks, and each opening claw is provided with 2-8 opening hooks, each spreading claw is composed of 4 spreading hooks, one ends of the spreading hooks are jointed together, the total width of the other ends of the spreading hooks is 8cm, and the distance between every two adjacent spreading hooks is equal, although the structure of the device is simple, the device has a lot of defects and shortcomings, in the existing device, the design formed by the spreading hooks has defects, the spreading hooks are easy to cause mucous membrane or soft tissue injury in an animal body, the spreading hooks are easy to damage blood vessels in the animal body, the normal operation of an experiment is influenced, workers need to often process incisions, the working strength of the workers is increased, the working fatigue of the workers is easy to cause, the opening angles of the left spreading rod and the right spreading rod are limited by the holding power of the workers, the spreading angles are limited, the device is not suitable for animals such as large-size livestock and the like, the device is single in use, the waste of experimental instruments is caused, and under the conditions, in order to avoid the above technical problems, it is necessary to provide a simple soft tissue spreader for animal experiments to overcome the above-mentioned drawbacks in the prior art.
Disclosure of Invention
The invention aims to provide a simple soft tissue spreader for animal experiments, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a simple soft tissue spreader for animal experiments comprises a screw seat, wherein a screw rod is arranged on the inner wall of the screw seat, a chute is arranged on the inner wall of the screw rod, the outer wall of the chute is connected with the inner wall of the screw rod, the inner wall of the screw seat is movably connected with the outer wall of the chute, a motor is arranged on the outer wall of the right side of the screw rod, the inner wall of the motor is connected with the outer wall of the screw rod, side plates are arranged on the inner side and the outer side of the screw rod, the inner wall of each side plate is movably connected with the outer wall of the screw rod, a supporting rod is arranged at the bottom end of the inner wall of each side plate, the outer wall of each supporting rod is connected with the inner wall of each side plate, a triangular plate is arranged on the outer wall of each triangular plate, a stop block is arranged on the outer wall of the screw rod, the inner wall of each stop, the outer wall of the push rod is connected with the inner wall of the screw seat, the outer wall of the triangular plate is provided with a crank arm, the inner wall of the crank arm is connected with the outer wall of the triangular plate, the bottom end of the outer wall of the crank arm is provided with a support rod, the inner wall of the support rod is connected with the outer wall of the crank arm, the inner wall of the crank arm is provided with a rotating shaft, the outer wall of the rotating shaft is connected with the inner wall of the crank arm, the outer wall of the rotating shaft is sleeved with a rotating rod, the inner wall of the rotating rod is connected with the outer wall of the rotating shaft, the inner wall of the rotating rod is provided with a vertical rod, the outer wall of the upright pole is connected with the inner wall of the rotating rod, the outer side of the upright pole is provided with a top block, the inner wall of the top block is provided with a slot, the inner wall of slot installs the inserted bar, the outer wall of inserted bar links to each other with the inner wall of slot, the inner wall of pole setting passes through the inserted bar and links to each other with the inner wall activity of kicking block, the inner wall of kicking block links to each other with the outer wall activity of spout.
Preferably, the inboard of curb plate is equipped with the cushion, the inner wall of cushion links to each other with the outer wall of lead screw, the last surface mounting of curb plate has the baffle, the lower surface of baffle links to each other with the upper surface of curb plate, the right side of baffle is equipped with connects the angle sign indicating number, the outer wall of connecting the angle sign indicating number links to each other with the inner wall of screw seat, connect the right side inner wall of angle sign indicating number and install the L template, the left side outer wall of L template links to each other with the left side outer wall of screw seat, the ejector pin is installed to the inner wall of screw seat, the outer wall of ejector pin links to each other with the inner wall of connecting the angle sign indicating number, the nut is installed on the outer wall top of ejector pin.
Preferably, cushion blocks are arranged between the inner walls of the triangular plates, and the outer walls of the cushion blocks are connected with the inner walls of the triangular plates.
Preferably, the bottom end of the outer wall of the support rod is provided with a foot pad, and the inner wall of the foot pad is connected with the outer wall of the support rod.
Preferably, the outer wall of the rotating shaft is sleeved with a gasket, the inner wall of the gasket is connected with the outer wall of the rotating shaft, and the inner wall of the gasket is connected with the outer wall of the crank arm.
Compared with the prior art, the invention has the beneficial effects that:
1. this simple and easy soft tissue struts ware for animal experiments through the cooperation between motor, lead screw and the screw seat, under the effect of spout, the motor is exchange servo motor for through the size of the produced power of the electric power of adjusting through the motor, accommodate motor's slew velocity, and then adjust the moving speed of curb plate in the spout on the lead screw and strut the angle.
2. This simple and easy soft tissue struts ware for animal experiments, under the effect of lead screw, the spout of kicking block and dog on the lead screw is removed about, and then prevents that the curb plate from taking place skew or dislocation when moving on the lead screw, under the effect of branch, branch can fix the animal on the operation panel, and then avoids in the experimentation that the animal takes place to fight and prick the normal clear that the circumstances influences the experiment.
3. This simple and easy soft tissue struts ware for animal experiments, thereby overcome the simple and easy soft tissue struts ware for traditional animal experiments and strut the hook and easily cause the internal mucous membrane of animal or soft tissue damage, strut the internal blood vessel of hook fragile animal, influence the normal clear of experiment, the worker needs often to handle the incision, worker's working strength has been increased, easily cause worker's work fatigue, and the opening angle of left side distraction rod and right distraction rod receives worker's grip restriction, it is limited to strut the angle, be not suitable for animals such as big size livestock to use, single use function, cause the extravagant shortcoming of experimental apparatus.
4. This simple and easy soft tissue struts ware for animal experiments has overcome current simple and easy soft tissue struts ware for animal experiments and has relied on left spreader bar and right spreader bar to carry out the incision to the toy and strut, and practical function is single shortcoming has improved the work efficiency of simple and easy soft tissue struts ware for animal experiments.
5. This simple and easy soft tissue struts ware for animal experiments has avoided often debugging in the use to produce the pressure and the burden of work, still lets current simple and easy soft tissue struts ware for animal experiments can obtain more recognition on the market, has improved the product quality of simple and easy soft tissue struts ware for animal experiments, has saved user's purchasing cost, has avoided the waste of production resource, is fit for using widely.
Drawings
FIG. 1 is a connection diagram of a nut seat, a lead screw and a motor;
FIG. 2 is a view showing a connection relationship between the screw, the side plate and the crank arm of FIG. 1;
fig. 3 is a front sectional view of the side plate, the nut block and the lead screw of fig. 1.
In the figure: 1. screw seat, 2, lead screw, 3, motor, 4, pole setting, 5, dog, 6, push rod, 7, curb plate, 8, branch, 9, vaulting pole, 10, pad foot, 11, bent arm, 12, set-square, 13, spout, 14, kicking block, 15, cushion, 16, pivot, 17, bull stick, 18, inserted bar, 19, slot, 20, packing ring, 21, nut, 22, ejector pin, 23, connect the angle sign indicating number, 24, baffle, 25, cushion, 26, L template.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a simple soft tissue spreader for animal experiments comprises a screw seat 1 for mounting and fixing a side plate 7, wherein a lead screw 2 is arranged on the inner wall of the screw seat 1 and used for driving the side plate 7 to move on the lead screw 2, a sliding chute 13 is arranged on the inner wall of the lead screw 2 and used for driving the side plate 7 to slide on the lead screw 2, the outer wall of the sliding chute 13 is connected with the inner wall of the lead screw 2, the inner wall of the screw seat 1 is movably connected with the outer wall of the sliding chute 13, a motor 3 is arranged on the outer wall of the right side of the lead screw 2 and is an alternating current servo motor and used for adjusting the moving speed of the screw seat 1, the inner wall of the motor 3 is connected with the outer wall of the lead screw 2, the inner side plate 7 and the outer side of the lead screw 2 are respectively provided with a support rod 9, a rubber mat 25 is arranged on the inner side of the side plate 7 and used for placing the side plate 7, the screw seat dislocation fixing device is used for placing a screw seat 1 to be dislocated, the lower surface of a baffle plate 24 is connected with the upper surface of a side plate 7, a connecting angle code 23 is arranged on the right side of the baffle plate 24 and used for reinforcing the connection of the screw seat 1, the outer wall of the connecting angle code 23 is connected with the inner wall of the screw seat 1, an L-shaped plate 26 is installed on the right inner wall of the connecting angle code 23 and used for reinforcing the connection of the screw seat 1, the left outer wall of the L-shaped plate 26 is connected with the left outer wall of the screw seat 1, a mandril 22 is installed on the inner wall of the screw seat 1 and used for reinforcing the connection of the screw seat 1, the outer wall of the mandril 22 is connected with the inner wall of the connecting angle code 23, a nut 21 is installed at the top end of the outer wall of the mandril 22, the inner wall of the nut 21 is connected with the outer wall of the mandril 22 through threads, the, the bottom end of the outer wall of the supporting rod 8 is provided with a foot pad 10 for preventing the supporting rod 8 from scratching animals, the inner wall of the foot pad 10 is connected with the outer wall of the supporting rod 8, the outer wall of the supporting rod 8 is connected with the inner wall of the side plate 7, the outer wall of the side plate 7 is provided with a triangular plate 12 for reinforcing the connection between the side plate 7 and the screw seat 1, a cushion block 15 is arranged between the inner walls of the triangular plate 12 for ensuring the connection between the two triangular plates 12 to be firmer, the outer wall of the cushion block 15 is connected with the inner wall of the triangular plate 12, the inner wall of the triangular plate 12 is connected with the outer wall of the side plate 7, the outer wall of the screw rod 2 is provided with a stop block 5, the stop block 5 is used for preventing the side plate 7 from being dislocated, the inner wall of the stop block 5 is movably connected with the outer wall of the screw rod 2, the inner wall of the stop, the outer wall of the triangle plate 12 is provided with a crank arm 11 for installing and fixing a support rod 9, the inner wall of the crank arm 11 is connected with the outer wall of the triangle plate 12, the bottom end of the outer wall of the crank arm 11 is provided with the support rod 9 for supporting an incision on the animal body, the inner wall of the support rod 9 is connected with the outer wall of the crank arm 11, the inner wall of the crank arm 11 is provided with a rotating shaft 16 for connecting and driving the crank arm 11 to move on the screw rod 2, the outer wall of the rotating shaft 16 is sleeved with a gasket 20 for enabling the rotating shaft 16 to be more firmly connected with the crank arm 11, the inner wall of the gasket 20 is connected with the outer wall of the rotating shaft 16, the inner wall of the gasket 20 is connected with the outer wall of the crank arm 11, the outer wall of the rotating shaft 16 is connected with the inner wall of the crank arm 11, the outer wall of the rotating shaft 16 is sleeved with a rotating rod 17 for being pushed by a jacking block 14 to drive the, the animal supporting rod is used for connecting and fixing the top block 14, the outer wall of the vertical rod 4 is connected with the inner wall of the rotating rod 17, the top block 14 is installed on the outer side of the vertical rod 4, the side plate 7 is pushed to move left and right on the sliding groove 13 of the screw rod 2, the inner wall of the top block 14 is provided with a slot 19, a strand installation inserted rod 18 is possessed, the inserted rod 18 is installed on the inner wall of the slot 19, the outer wall of the inserted rod 18 is connected with the inner wall of the slot 19, the connection between the vertical rod 4 and the top block 14 is firmer, the inner wall of the vertical rod 4 is movably connected with the inner wall of the top block 14 through the inserted rod 18, the connection between the inner wall of the top block 14 and the outer wall of the sliding groove 13 is firmer, the connection between the top block 14 and the vertical rod 4 is firmer, the side plate 7 and the crank arm 11 are pushed to move left and.
A simple soft tissue spreader for animal experiments is composed of a nut seat 1, a lead screw 2, a motor 3, a vertical rod 4, a stop block 5, a push rod 6, a side plate 7, a support rod 8, a support rod 9, a foot pad 10, a crank arm 11, a triangular plate 12, a sliding groove 13, a top block 14, a cushion block 15, a rotating shaft 16, a rotating rod 17, an inserted rod 18, an inserting groove 19, a gasket 20, a nut 21, a top rod 22 and other parts, wherein the main matching dimensions, especially the interference fit dimensions and the related precision of the parts are rechecked before assembly, when the same part is fastened by a plurality of screws (bolts), all the screws (bolts) need to be crossed, symmetrical, gradual and uniform screwed, and an angle grinder and a file are used for fastening the nut seat 1, the lead screw 2, the motor 3, the vertical rod 4, the stop block 5, the push rod 6, the side plate 7, the support rod 8, the support rod 9, the foot pad 10, the crank arm 11, the triangular plate 12 and, The production method comprises the following steps of burring on the surfaces and joints of a sliding groove 13, a top block 14, a cushion block 15, a rotating shaft 16, a rotating rod 17, an inserted link 18, a slot 19, a washer 20, a nut 21, an ejector rod 22 and the like, then coating antirust paint on the surfaces and joints of the burrs, airing, then installing a nut seat 1 on a screw rod 2, connecting the screw rod 2 with a motor 3, installing a side plate 7 on the outer side of the nut seat 1, connecting and fixing a crank arm 11 and the side plate 7 together by using a triangular plate 12, installing a fixed stay bar 9 at the bottom end of the outer wall of the crank arm 11, installing a support bar 8 at the bottom end of the inner wall of the side plate 7, installing the rotating shaft 16 on the inner wall of the crank arm 11 to enable the rotating shaft 16 to rotate in the crank arm 11, connecting the rotating rod 17 with the rotating shaft 16, connecting the rotating rod 17 with the top block 14 by using the inserted link 18, connecting the top block 14 with the screw rod 2, installing the upright, in the work, switch on motor 3's external power supply, motor 3 begins work, drives screw seat 1 and removes on spout 13 in lead screw 2, and the removal is controlled in spout 13 that drives curb plate 7 on lead screw 2, and branch 8 is visited into the animal internally, fixes the animal, and vaulting pole 9 struts the incision, and the doctor begins experimental work, accomplishes this animal experiment with the equipment work of simple and easy soft tissue spreader.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a simple and easy soft tissue struts ware for animal experiments, includes screw seat (1), its characterized in that: the inner wall of the screw seat (1) is provided with a lead screw (2), the inner wall of the lead screw (2) is provided with a sliding groove (13), the outer wall of the sliding groove (13) is connected with the inner wall of the lead screw (2), the inner wall of the screw seat (1) is movably connected with the outer wall of the sliding groove (13), the outer wall of the right side of the lead screw (2) is provided with a motor (3), the inner wall of the motor (3) is connected with the outer wall of the lead screw (2), the inner side and the outer side of the lead screw (2) are both provided with a side plate (7), the inner wall of the side plate (7) is movably connected with the outer wall of the lead screw (2), the bottom end of the inner wall of the side plate (7) is provided with a support rod (8), the outer wall of the support rod (8) is connected with the inner wall of the side plate (7), the outer wall of the side plate (, the outer wall of the screw rod (2) is provided with a stop block (5), the inner wall of the stop block (5) is movably connected with the outer wall of the screw rod (2), the inner wall of the stop block (5) is provided with a push rod (6), the outer wall of the push rod (6) is connected with the outer wall of the stop block (5), the outer wall of the push rod (6) is connected with the inner wall of the screw seat (1), the outer wall of the triangular plate (12) is provided with a crank arm (11), the inner wall of the crank arm (11) is connected with the outer wall of the triangular plate (12), the bottom end of the outer wall of the crank arm (11) is provided with a support rod (9), the inner wall of the support rod (9) is connected with the outer wall of the crank arm (11), the inner wall of the crank arm (11) is provided with a rotating shaft (16), the outer wall of the rotating shaft (16) is connected with the inner wall of the crank arm (11), the outer wall of the rotating shaft (16) is sleeved with a, pole setting (4) are installed to the inner wall of bull stick (17), the outer wall of pole setting (4) links to each other with the inner wall of bull stick (17), kicking block (14) are installed in the outside of pole setting (4), the inner wall of kicking block (14) is equipped with slot (19), inserted bar (18) are installed to the inner wall of slot (19), the outer wall of inserted bar (18) links to each other with the inner wall of slot (19), the inner wall of pole setting (4) passes through the inner wall activity of inserted bar (18) and kicking block (14) and links to each other, the inner wall of kicking block (14) links to each other with the outer wall activity of spout (13).
2. The simple soft tissue spreader for animal experiments, according to claim 1, is characterized in that: the inner side of the side plate (7) is provided with a rubber pad (25), the inner wall of the rubber pad (25) is connected with the outer wall of the screw rod (2), the upper surface of the side plate (7) is provided with a baffle plate (24), the lower surface of the baffle plate (24) is connected with the upper surface of the side plate (7), the right side of the baffle (24) is provided with a connecting angle bracket (23), the outer wall of the connecting angle bracket (23) is connected with the inner wall of the screw seat (1), an L-shaped plate (26) is arranged on the inner wall of the right side of the connecting angle bracket (23), the outer wall of the left side of the L-shaped plate (26) is connected with the outer wall of the left side of the nut seat (1), the inner wall of the nut seat (1) is provided with a mandril (22), the outer wall of the mandril (22) is connected with the inner wall of the connecting angle bracket (23), the top end of the outer wall of the ejector rod (22) is provided with a nut (21), and the inner wall of the nut (21) is in threaded connection with the outer wall of the ejector rod (22).
3. The simple soft tissue spreader for animal experiments, according to claim 1, is characterized in that: cushion blocks (15) are arranged between the inner walls of the triangular plates (12), and the outer walls of the cushion blocks (15) are connected with the inner walls of the triangular plates (12).
4. The simple soft tissue spreader for animal experiments, according to claim 1, is characterized in that: the bottom end of the outer wall of the supporting rod (8) is provided with a foot pad (10), and the inner wall of the foot pad (10) is connected with the outer wall of the supporting rod (8).
5. The simple soft tissue spreader for animal experiments according to any one of claims 1 to 4, wherein: the outer wall of the rotating shaft (16) is sleeved with a gasket (20), the inner wall of the gasket (20) is connected with the outer wall of the rotating shaft (16), and the inner wall of the gasket (20) is connected with the outer wall of the crank arm (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810469725.3A CN108814662B (en) | 2018-05-16 | 2018-05-16 | Simple soft tissue spreader for animal experiments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810469725.3A CN108814662B (en) | 2018-05-16 | 2018-05-16 | Simple soft tissue spreader for animal experiments |
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| Publication Number | Publication Date |
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| CN108814662A CN108814662A (en) | 2018-11-16 |
| CN108814662B true CN108814662B (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810469725.3A Active CN108814662B (en) | 2018-05-16 | 2018-05-16 | Simple soft tissue spreader for animal experiments |
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Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2548565Y (en) * | 2002-04-02 | 2003-05-07 | 张成峰 | Miniature automatic abdominal retractor |
| US8100828B2 (en) * | 2002-11-23 | 2012-01-24 | George Frey | Distraction and retraction system for spinal surgery |
| DE102011050418A1 (en) * | 2011-05-17 | 2012-11-22 | Medicon Eg. Chirurgiemechaniker-Genossenschaft | Surgical instrument e.g. spreader for spreading tissue of human, has pressure element for indirectly or direct determining pressure acting on blades |
| CN102283719B (en) * | 2011-07-07 | 2013-08-07 | 深圳市瑞沃德生命科技有限公司 | Multifunctional fine animal surgery positioning device |
| CN102525577B (en) * | 2012-01-30 | 2013-10-23 | 上海拓腾医疗器械有限公司 | Spreader and spreading device for minimally invasive surgeries |
| US9414828B2 (en) * | 2014-05-01 | 2016-08-16 | Blackstone Medical, Inc. | Integrated retractor-distractor system for use with modular bone screws |
| CN206867309U (en) * | 2016-12-19 | 2018-01-12 | 商丘医学高等专科学校 | A kind of mouth expanding device for animal experiment |
| CN206924094U (en) * | 2017-02-04 | 2018-01-26 | 中国人民解放军***南京总医院 | A kind of improved minimally invasive spine surgical drag hook |
| CN107049387A (en) * | 2017-05-27 | 2017-08-18 | 山东省文登整骨医院 | One kind is used for prone position intervertebral foramen device for spreading |
| CN107174298B (en) * | 2017-07-04 | 2019-11-26 | 台州信一智能科技有限公司 | A kind of dilator used for medical procedures |
| CN107569296B (en) * | 2017-09-19 | 2023-09-19 | 广州医科大学附属第一医院 | Animal experiment spreader |
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2018
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