CN104490431A - Gasless spreader - Google Patents
Gasless spreader Download PDFInfo
- Publication number
- CN104490431A CN104490431A CN201410727496.2A CN201410727496A CN104490431A CN 104490431 A CN104490431 A CN 104490431A CN 201410727496 A CN201410727496 A CN 201410727496A CN 104490431 A CN104490431 A CN 104490431A
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- CN
- China
- Prior art keywords
- main cylinder
- pawl
- dilator
- bar
- pneumoperitoneum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- A61B17/0281—Abdominal wall lifters
Abstract
The invention belongs to the technical field of medical appliances, particularly relates to a gasless spreader, and solves the problems of high insertion difficulty and the like of an existing gasless spreader. The gasless spreader comprises a main barrel body, wherein two or more spreading jaws are movably connected to the front end of the main barrel body; a movable barrel body penetrates the main barrel body; two or more hinged rods are hinged to the front end of the movable barrel body and in one-to-one correspondence with the spreading jaws; the other ends of the hinged rods are hinged to the middles of the spreading jaws; a drive mechanism capable of driving the movable barrel body to axially reciprocate along the main barrel body is arranged between the main barrel body and the movable barrel body. The gasless spreader has the advantages of being compact in structure, easy to operate and good in stability; the length of the spreading jaws in a folded state can be reduced on the premise of guaranteeing sufficientlength of the spreading jaws, so that the insertion of the spreader is facilitated; the contact area of the tail ends of the spreading jaws and the belly wall is large when the spreading jaws are unfolded, so that the tail ends of the spreading jaws unlikely cause injury to the belly wall under the action of a pull force.
Description
Technical field
The invention belongs to technical field of medical instruments, especially relate to one and exempt from pneumoperitoneum dilator.
Background technology
Laparoscopic surgery is described as 20th century medical sciencies to one of significant contribution of human civilization, is the theme of 21 century whole world surgery development.Minimally Invasive Surgery has the advantages such as otch is little, amount of bleeding is few, scar after the operation is little, recovery time is fast compared with traditional open surgery, and the misery that patient is suffered reduces greatly, is widely used in clinical operation.As a kind of less invasive techniques, become the important modus operandi of the histoorgans such as liver, gallbladder, pancreas, spleen, stomach, intestinal, abdominal hernia, uterus and ovary.Conventional laparoscopic operation utilizes CO2 pneumoperitoneum technology to manufacture operation technique space, because CO2 pneumoperitoneum has many harmful effects to breathing, blood circulation and Pregnant Fetus, is developed various laparoscopic surgery of exempting from pneumoperitoneum abdominal part dilator to carry out to exempt from pneumoperitoneum.But existing pneumoperitoneum dilator of exempting from also exists many deficiencies, such as, in order to ensure that pull strength needs longer to strut pawl, but to strut difficulty when pawl inserts large compared with long, wound is large, operative space exposes not enough, stomach wall discontinuity, strut pawl end easily to thrust stomach wall under a stretching force and cause secondary injury, in addition, existing pneumoperitoneum technology of exempting from is adopt porous technology substantially, namely need during operation to open multiple otch so that exempting from pneumoperitoneum device at abdominal part, illumination probe, operating theater instruments etc. stretch into intraperitoneal and carry out hands art, multiple otch easily causes patient's postoperative pain, the generation of infection of incisional wound and incisional hernia, and postoperative abdominal has many places cicatrix, affect attractive in appearance, these problems significantly limit the development of exempting from pneumoperitoneum technology.
In order to solve prior art Problems existing, people have carried out long-term exploration, propose solution miscellaneous.Such as, Chinese patent literature discloses a kind of spindle single-hole laparoscopic and exempts from pneumoperitoneum device [application number: 201210013505.2], this device is made up of fixed mount, suspension gear and spindle mechanism, described suspension gear by withholding, suspension rod, support ring, sliding bearing form, withhold be arranged on suspension rod top cylinder on, can rotate around cylinder, sliding bearing is arranged on suspension rod bottom and snaps in the arc groove of support ring, and suspension rod can rotate along arc groove; Described spindle mechanism by movable loop bar, fixed sleeving and gathering time be that fusoid spoke forms.Suspension gear is passed the through hole of the fixed sleeving centre of spindle mechanism from bottom to top from spindle mechanism spoke end, latch is utilized to insert suspension rod side opening location, support ring is made just to be in the maximum gauge place of the spindle that spoke is formed, the projection groove of movable loop bar being inserted in fixed sleeving inwall makes both connect, hold movable loop bar, upwards lift suspension rod and support ring is moved up thus spoke is strutted to arrange in umbrella.
Such scheme to some extent solves existing pneumoperitoneum dilator operative space of exempting from and exposes not enough, the problem of stomach wall discontinuity, but the program still also exists: poor stability, easy to operate, strut difficulty when pawl inserts large, wound is large, struts pawl end and easily thrusts the problem that stomach wall causes secondary injury under a stretching force.
Summary of the invention
The object of the invention is for the problems referred to above, provide a kind of simplicity of design reasonable, compact conformation exempt from pneumoperitoneum dilator.
For achieving the above object, present invention employs following technical proposal: originally exempt from pneumoperitoneum dilator, comprise main cylinder, be connected with at least two in the front end of main cylinder and strut pawl, it is characterized in that, mobile cylindrical shell is equipped with in described main cylinder, at least two hinge bars are hinged with in the front end of mobile cylindrical shell, described hinge bar with strut pawl one_to_one corresponding and the other end of hinge bar is hinged with strutting in the middle part of pawl, be provided with between described main cylinder and mobile cylindrical shell and mobile cylindrical shell can be driven along the driving mechanism of main cylinder axial reciprocating movement.Obviously, this dilator can be inserted abdominal cavity when strutting pawl and drawing in, when moving axially along main cylinder under the effect of mobile cylindrical shell at driving mechanism, hinge bar drives and struts pawl and open and under pulling device effect, to realize this dilator realize operative space and expose.
Exempt from pneumoperitoneum dilator above-mentioned, the described pawl rear end that struts has axially extended first bar hole, the front end of described main cylinder has some axially extended second bar holes, the first described bar hole and the second bar hole one_to_one corresponding and be mutually socketed, respectively strut pawl and mutually to draw in and the pawl that struts being in rounding state moves axially to main cylinder rear end until the front end that is resisted against main cylinder, the front end of the first bar hole and/or the rear end that struts pawl are resisted against the rear end of the second bar hole under the drive of hinge bar when mobile cylindrical shell moves in main cylinder.This structure is adopted to make retract when strutting pawl gathering part, can ensure enough strut the prerequisite of pawl length under the length reduced when strutting pawl rounding state make this dilator be convenient to insert, make this dilator be convenient to insert under the state ensureing enough pull strengths like this.
Exempt from pneumoperitoneum dilator above-mentioned, described driving mechanism comprises and being sheathed on main cylinder and the driving body that can rotate relative to main cylinder circumference, at mobile cylindrical shell and drive to be provided with between body and mobile cylindrical shell can be driven along the axial driven unit of main cylinder axial reciprocating movement when driving body to rotate along main cylinder is circumferential.Namely move by moving cylindrical shell axial reciprocating in main cylinder during rotating drive body.
Exempt from pneumoperitoneum dilator above-mentioned, between described mobile cylindrical shell and main cylinder, be provided with axially directed mechanism.
Exempt from pneumoperitoneum dilator above-mentioned, described axially directed mechanism comprises at least one bar-shaped trough axially arranged along main cylinder, and the external side of described moving cylinder is axially arranged with the guide pad corresponding with bar-shaped trough and described guide pad slides axially and is arranged in bar-shaped trough.Namely guide pad slides axially and mobile cylindrical shell is moved axially along main cylinder in bar-shaped trough.
Exempt from pneumoperitoneum dilator above-mentioned, described axial driven unit comprises the female thread being arranged on and driving inside body, and described guide pad exceeds bar-shaped trough and on guide pad, is provided with the intermeshing external screw thread with female thread.Namely drive the guide pad threaded engagement on body and mobile cylindrical shell thus realize the movement of mobile cylindrical shell.
Exempt from pneumoperitoneum dilator above-mentioned, the quantity of described bar-shaped trough is two and is symmetrically set.Obviously, when bar-shaped trough quantity is two, the quantity of guide pad is also two and is oppositely arranged, good stability when mobile cylindrical shell is moved.
Exempt from pneumoperitoneum dilator above-mentioned, the described pawl circumference that struts is uniformly distributed setting, and each struts the fan-shaped tile fragment that pawl front end is equipped with the wide lower end narrow structure in upper end, and the fan-shaped tile fragment described in strutting when pawl is in rounding state surrounds the small top and big bottom circular cone tubular structure of formation.Preferably, the pawl that struts here is four and circumference evenly setting, and this structure makes the contact area strutting end and stomach wall when pawl opens large, struts pawl end and not easily damages stomach wall under a stretching force.
Exempt from pneumoperitoneum dilator above-mentioned, between described driving body and main cylinder, be provided with the axial limit structure that can prevent from driving body to move axially along main cylinder; Described axial limit structure comprise be arranged on main cylinder outer circumferential and respectively with drive the spacing ring that leans of body two ends, and described spacing ring and main cylinder are connected as a single entity structure.Prevent from driving body to produce on main cylinder to move axially, prevent from driving body to depart from main cylinder.
Exempt from pneumoperitoneum dilator above-mentioned, described main cylinder is arranged be positioned at and drives below body and the installation ring body leant with spacing ring, described installation ring body is provided with the Hook that some circumferences are uniformly distributed setting.Hook makes this dilator and pulling device easy to connect.
Compared with prior art, originally the advantage exempting from pneumoperitoneum dilator is: compact conformation, be easy to operation, good stability, can ensure enough strut the prerequisite of pawl length under the length reduced when strutting pawl rounding state make this dilator be convenient to insert, the contact area strutting end and stomach wall when pawl opens is large, struts pawl end and not easily damages stomach wall under a stretching force.
Accompanying drawing explanation
Structural representation when Fig. 1 is open configuration provided by the invention.
Fig. 2 is explosive view provided by the invention.
Structural representation when Fig. 3 is rounding state provided by the invention.
Structural representation when Fig. 4 is using state provided by the invention.
In figure, main cylinder 1, second bar hole 11, spacing ring 12, install ring body 13, Hook 131, strut pawl 2, first bar hole 21, fan-shaped tile fragment 22, mobile cylindrical shell 3, hinge bar 4, driving mechanism 5, drive body 51, female thread 511, bar-shaped trough 52, guide pad 53, external screw thread 531, pulling device 6.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As Figure 1-4, originally pneumoperitoneum dilator is exempted from, comprise main cylinder 1, be connected with at least two in the front end of main cylinder 1 and strut pawl 2, mobile cylindrical shell 3 is equipped with in main cylinder 1, at least two hinge bars 4 are hinged with in the front end of mobile cylindrical shell 3, hinge bar 4 with strut pawl 2 one_to_one corresponding and the other end of hinge bar 4 is hinged with strutting in the middle part of pawl 2, the driving mechanism 5 that mobile cylindrical shell 3 can be driven along the movement of main cylinder 1 axial reciprocating is provided with between main cylinder 1 and mobile cylindrical shell 3, obviously, this dilator can be inserted abdominal cavity when strutting pawl 2 and drawing in, when moving axially along main cylinder 1 under the effect of mobile cylindrical shell 3 at driving mechanism, hinge bar 4 drives and struts pawl 2 and open and under pulling device 6 acts on, to realize this dilator realize operative space and expose.
Preferably, here pawl 2 rear end that struts has axially extended first bar hole 21, the front end of main cylinder 1 has some axially extended second bar holes 11, first bar hole 21 and the second bar hole 11 one_to_one corresponding and be mutually socketed, respectively strut pawl 2 mutually to draw in and the pawl 2 that struts being in rounding state moves axially until the front end that is resisted against main cylinder 1, the front end of the first bar hole 21 and/or the rear end that struts pawl 2 are resisted against the rear end of the second bar hole 11 under the drive of hinge bar 4 to main cylinder 1 rear end when mobile cylindrical shell 3 is mobile in main cylinder 1, make to strut part of retracting when pawl 2 draws in like this, can ensure enough strut the prerequisite of pawl 2 length under the length reduced when strutting pawl 2 rounding state make this dilator be convenient to insert, this dilator is made to be convenient to insert under the state ensureing enough pull strengths like this.
Further, here driving mechanism 5 comprise be sheathed on main cylinder 1 and can relative to main cylinder 1 circumference rotate driving body 51, being provided with between mobile cylindrical shell 3 and driving body 51 and mobile cylindrical shell 3 can being driven along the axial driven unit of main cylinder 1 axial reciprocating movement when driving body 51 to rotate along main cylinder 1 circumference, namely moving by moving cylindrical shell 3 axial reciprocating in main cylinder 1 during rotating drive body 51.
Wherein, here axially directed mechanism is provided with between mobile cylindrical shell 3 and main cylinder 1, preferably, here axially directed mechanism comprises at least one bar-shaped trough 52 axially arranged along main cylinder 1, be axially arranged with the guide pad 53 corresponding with bar-shaped trough 52 outside mobile cylindrical shell 3 and guide pad 53 slides axially and is arranged in bar-shaped trough 52, namely guide pad 53 slides axially and mobile cylindrical shell 3 is moved axially along main cylinder 1 in bar-shaped trough 52.Further, here axial driven unit comprises the female thread 511 being arranged on and driving inside body 51, guide pad 53 exceeds bar-shaped trough 52 and on guide pad 53, is provided with the intermeshing external screw thread 531 with female thread 511, namely drives body 51 with guide pad 53 threaded engagement on mobile cylindrical shell 3 thus realizes the movement of mobile cylindrical shell 3.
As preferably, the quantity of bar-shaped trough 52 is here two and is symmetrically set, and when bar-shaped trough 52 quantity is two, the quantity of guide pad 53 is also two and is oppositely arranged, good stability when mobile cylindrical shell 3 is moved.Pawl 2 circumference that struts in the present embodiment is uniformly distributed setting, and each struts the fan-shaped tile fragment 22 that pawl 2 front end is equipped with the wide lower end narrow structure in upper end, and surround the small top and big bottom circular cone tubular structure of formation when strutting fan-shaped tile fragment 22 when pawl 2 is in rounding state, preferably, here the pawl 2 that struts is four and circumference evenly setting, this structure makes the contact area strutting end and stomach wall when pawl 2 opens large, struts pawl 2 end and not easily damages stomach wall under a stretching force.
In addition, the axial limit structure that can prevent from driving body 51 to move axially along main cylinder 1 is provided with between driving body 51 here and main cylinder 1; Axial limit structure comprise be arranged on main cylinder 1 outer circumferential and respectively with drive the spacing ring 12 that leans of body 51 two ends, and spacing ring 12 and main cylinder 1 are connected as a single entity structure, such can preventing drives body 51 to produce on main cylinder 1 and move axially, and prevents driving body 51 from departing from main cylinder 1.Wherein, here main cylinder 1 is arranged be positioned at and drives below body 51 and the installation ring body 13 leant with spacing ring 12, install ring body 13 and be provided with the Hook 131 that some circumferences are uniformly distributed setting, Hook 131 makes this dilator and pulling device 6 easy to connect.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ main cylinder 1, second bar hole 11, spacing ring 12, installation ring body 13, Hook 131 herein, strut the term such as pawl 2, first bar hole 21, fan-shaped tile fragment 22, mobile cylindrical shell 3, hinge bar 4, driving mechanism 5, driving body 51, female thread 511, bar-shaped trough 52, guide pad 53, external screw thread 531, pulling device 6, do not get rid of the probability using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (10)
1. exempt from pneumoperitoneum dilator for one kind, comprise main cylinder (1), be connected with at least two in the front end of main cylinder (1) and strut pawl (2), it is characterized in that, mobile cylindrical shell (3) is equipped with in described main cylinder (1), at least two hinge bars (4) are hinged with in the front end of mobile cylindrical shell (3), described hinge bar (4) with strut pawl (2) one_to_one corresponding and the other end of hinge bar (4) with strut pawl (2) middle part be hinged, the driving mechanism (5) that mobile cylindrical shell (3) can be driven along main cylinder (1) axial reciprocating movement is provided with between described main cylinder (1) and mobile cylindrical shell (3).
2. according to claim 1ly exempt from pneumoperitoneum dilator, it is characterized in that, described pawl (2) rear end that struts has axially extended first bar hole (21), the front end of described main cylinder (1) has some axially extended second bar holes (11), described the first bar hole (21) and the second bar hole (11) one_to_one corresponding and be mutually socketed, respectively strut pawl (2) mutually to draw in and the pawl (2) that struts being in rounding state moves axially to main cylinder (1) rear end until the front end that is resisted against main cylinder (1), the front end of the first bar hole (21) and/or the rear end that struts pawl (2) are resisted against the rear end of the second bar hole (11) under the drive of hinge bar (4) when mobile cylindrical shell (3) is mobile in main cylinder (1).
3. according to claim 1 and 2ly exempt from pneumoperitoneum dilator, it is characterized in that, described driving mechanism (5) comprises and is sheathed on the upper and driving body (51) that can rotate relative to main cylinder (1) circumference of main cylinder (1), mobile cylindrical shell (3) can be driven along the axial driven unit of main cylinder (1) axial reciprocating movement at mobile cylindrical shell (3) with driving to be provided with between body (51) when driving body (51) to rotate along main cylinder (1) is circumferential.
4. according to claim 3ly exempt from pneumoperitoneum dilator, it is characterized in that, between described mobile cylindrical shell (3) and main cylinder (1), be provided with axially directed mechanism.
5. according to claim 4ly exempt from pneumoperitoneum dilator, it is characterized in that, described axially directed mechanism comprises at least one bar-shaped trough (52) axially arranged along main cylinder (1), and described mobile cylindrical shell (3) outside is axially arranged with the guide pad (53) corresponding with bar-shaped trough (52) and described guide pad (53) slides axially and is arranged in bar-shaped trough (52).
6. according to claim 5ly exempt from pneumoperitoneum dilator, it is characterized in that, described axial driven unit comprises the female thread (511) being arranged on and driving body (51) inner side, and described guide pad (53) exceeds bar-shaped trough (52) and is provided with on guide pad (53) and female thread (511) intermeshing external screw thread (531).
7. according to claim 6ly exempt from pneumoperitoneum dilator, it is characterized in that, the quantity of described bar-shaped trough (52) is two and is symmetrically set.
8. according to claim 1ly exempt from pneumoperitoneum dilator, it is characterized in that, described pawl (2) circumference that struts is uniformly distributed setting, and each struts the fan-shaped tile fragment (22) that pawl (2) front end is equipped with the wide lower end narrow structure in upper end, and the fan-shaped tile fragment (22) described in strutting when pawl (2) is in rounding state surrounds the small top and big bottom circular cone tubular structure of formation.
9. according to claim 3ly exempt from pneumoperitoneum dilator, it is characterized in that, between described driving body (51) and main cylinder (1), be provided with the axial limit structure that can prevent from driving body (51) to move axially along main cylinder (1); Described axial limit structure comprise be arranged on main cylinder (1) outer circumferential and respectively with drive the spacing ring (12) that leans of body (51) two ends, and described spacing ring (12) and main cylinder (1) are connected as a single entity structure.
10. according to claim 9ly exempt from pneumoperitoneum dilator, it is characterized in that, described main cylinder (1) is arranged be positioned at and drives body (51) below and the installation ring body (13) leant with spacing ring (12), described installation ring body (13) is provided with the Hook (131) that some circumferences are uniformly distributed setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410727496.2A CN104490431B (en) | 2014-12-03 | 2014-12-03 | Exempt from pneumoperitoneum dilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410727496.2A CN104490431B (en) | 2014-12-03 | 2014-12-03 | Exempt from pneumoperitoneum dilator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104490431A true CN104490431A (en) | 2015-04-08 |
| CN104490431B CN104490431B (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410727496.2A Active CN104490431B (en) | 2014-12-03 | 2014-12-03 | Exempt from pneumoperitoneum dilator |
Country Status (1)
| Country | Link |
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| CN (1) | CN104490431B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105662493A (en) * | 2015-12-17 | 2016-06-15 | 栾谦梅 | Wound cavity surface layer suspension apparatus |
| CN106388883A (en) * | 2016-08-31 | 2017-02-15 | 张强 | Arthroscopic auxiliary traction apparatus |
| CN106983543A (en) * | 2017-03-09 | 2017-07-28 | 许啸 | The minimally invasive tunnel dilator of reflexed umbrella-type |
| CN107468296A (en) * | 2017-09-13 | 2017-12-15 | 济南君道信医疗器械有限公司 | A kind of drawing-type abdominal wall dilator |
| CN107890358A (en) * | 2017-12-15 | 2018-04-10 | 山东大学 | A kind of deformable abdominal wall dilator |
| CN108433762A (en) * | 2017-07-03 | 2018-08-24 | 郝建 | Cranium struts drainage device after a kind of neurosurgery |
| CN108542441A (en) * | 2018-04-16 | 2018-09-18 | 汕头大学 | A kind of umbrella-type laparoscope pneumoperitoneum-free support device |
| RU2668695C1 (en) * | 2017-12-27 | 2018-10-02 | Максим Георгиевич Рябков | Device for re-examination of abdominal cavity in acute ischemia |
| CN109177196A (en) * | 2018-09-10 | 2019-01-11 | 嘉善蓝创塑胶有限公司 | Clutch rubber sleeve device for spreading and its strut method |
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| CN109662742A (en) * | 2019-01-30 | 2019-04-23 | 重庆市肿瘤研究所 | Laparoscopic surgery distraction instrument |
| CN109674498A (en) * | 2019-01-04 | 2019-04-26 | 中国医学科学院北京协和医院 | A kind of operation spreader tool |
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| CN113100849A (en) * | 2021-05-31 | 2021-07-13 | 李剑波 | Pneumoperitoneum-free type laparoscopic abdominal wall suspension device for general surgery department operation |
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Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105662493A (en) * | 2015-12-17 | 2016-06-15 | 栾谦梅 | Wound cavity surface layer suspension apparatus |
| CN106388883A (en) * | 2016-08-31 | 2017-02-15 | 张强 | Arthroscopic auxiliary traction apparatus |
| CN106983543A (en) * | 2017-03-09 | 2017-07-28 | 许啸 | The minimally invasive tunnel dilator of reflexed umbrella-type |
| CN108433762A (en) * | 2017-07-03 | 2018-08-24 | 郝建 | Cranium struts drainage device after a kind of neurosurgery |
| CN107468296B (en) * | 2017-09-13 | 2023-10-03 | 济南君道信医疗器械有限公司 | Traction type abdominal cavity wall spreader |
| CN107468296A (en) * | 2017-09-13 | 2017-12-15 | 济南君道信医疗器械有限公司 | A kind of drawing-type abdominal wall dilator |
| CN107890358A (en) * | 2017-12-15 | 2018-04-10 | 山东大学 | A kind of deformable abdominal wall dilator |
| CN107890358B (en) * | 2017-12-15 | 2023-08-25 | 山东大学 | Deformable abdominal wall spreader |
| RU2668695C1 (en) * | 2017-12-27 | 2018-10-02 | Максим Георгиевич Рябков | Device for re-examination of abdominal cavity in acute ischemia |
| CN108542441A (en) * | 2018-04-16 | 2018-09-18 | 汕头大学 | A kind of umbrella-type laparoscope pneumoperitoneum-free support device |
| CN108542441B (en) * | 2018-04-16 | 2023-11-03 | 汕头大学 | Umbrella-type laparoscope pneumoperitoneum-free supporting device |
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