CN104490431B - Exempt from pneumoperitoneum dilator - Google Patents
Exempt from pneumoperitoneum dilator Download PDFInfo
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- CN104490431B CN104490431B CN201410727496.2A CN201410727496A CN104490431B CN 104490431 B CN104490431 B CN 104490431B CN 201410727496 A CN201410727496 A CN 201410727496A CN 104490431 B CN104490431 B CN 104490431B
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- main cylinder
- pawl
- cylinder
- dilator
- pneumoperitoneum
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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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Heart & Thoracic Surgery (AREA)
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- Animal Behavior & Ethology (AREA)
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Abstract
The invention belongs to technical field of medical instruments, especially relate to one and exempt from pneumoperitoneum dilator.It solve existing pneumoperitoneum dilator of exempting from and insert the problems such as difficulty is big.Including main cylinder, it is connected with at least two in the front end of main cylinder and struts pawl, mobile cylinder it is equipped with in main cylinder, it is hinged with at least two hinge bars in the front end of mobile cylinder, hinge bar and the other end strutting pawl one_to_one corresponding and hinge bar are hinged in the middle part of pawl with strutting, and are provided with the drive mechanism that mobile cylinder can be driven to move along main cylinder axial reciprocating between main cylinder and mobile cylinder.Originally the advantage exempting from pneumoperitoneum dilator is: compact conformation, easily operated, good stability, can ensure enough strut pawl length on the premise of reduce length when strutting pawl rounding state this dilator facilitated insertion into, strut end when pawl opens big with the contact area of stomach wall, strut pawl end and be difficult under a stretching force stomach wall be damaged.
Description
Technical field
The invention belongs to technical field of medical instruments, especially relate to one and exempt from pneumoperitoneum and strut
Device.
Background technology
Laparoscopic surgery is described as 20th century medical science significant contribution to human civilization
One of, it is the theme of 21 century whole world surgery development.Minimally Invasive Surgery is opened with traditional
Operation on mouth is compared has that otch is little, amount of bleeding is few, scar after the operation is little, recovery time is fast
Advantage, the misery making patient suffer is greatly reduced, and is widely used in clinical operation.
As a kind of less invasive techniques, it has also become liver, gallbladder, pancreas, spleen, stomach, intestinal, abdominal hernia,
The important modus operandi of the histoorgan such as uterus and ovary.Conventional laparoscopic operation utilizes
CO2 pneumoperitoneum technology manufactures operation technique space, owing to CO2 pneumoperitoneum is to breathing, circulating
System and Pregnant Fetus have many harmful effects, are developed and various exempt from pneumoperitoneum abdominal part
Dilator carries out exempting from the laparoscopic surgery of 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 longer
To strut difficulty when pawl inserts big, wound is big, and operative space exposes deficiency, stomach wall stress
Uneven, strut pawl end and thrust stomach wall the most under a stretching force and cause secondary injury, separately
Outward, existing pneumoperitoneum technology of exempting from substantially uses porous technology, i.e. needs at abdomen during operation
Portion opens multiple otch to stretch into abdomen exempting from pneumoperitoneum device, illumination probe, operating theater instruments etc.
Intracavity is performed the operation, and multiple otch are easily caused patient's postoperative pain, infection of incisional wound and cut
The generation of mouth hernia, and postoperative abdominal has many places cicatrix, affects attractive in appearance, these problem poles
The earth limits the development exempting from pneumoperitoneum technology.
In order to solve the problem that prior art exists, people have carried out long-term exploration, have carried
Go out solution miscellaneous.Such as, Chinese patent literature discloses a kind of spindle
Shape single-hole laparoscopic exempts from pneumoperitoneum device [application number: 201210013505.2], this device by
Fixed mount, suspension gear and spindle mechanism composition, described suspension gear by withholding, suspension rod,
Support ring, sliding bearing form, and withhold on the cylinder being arranged on suspension rod top, can be around circle
Post rotate, sliding bearing be arranged on suspension rod bottom and snap in support ring arc groove in, hang
Bar can rotate along arc groove；Described spindle mechanism is by movable loop bar, fixed sleeving and gathering
Time be that fusoid spoke forms.By suspension gear from spindle mechanism spoke end from bottom to top
Through hole in the middle of the fixed sleeving of spindle mechanism, utilizes latch to insert suspension rod side opening fixed
Position, makes at the maximum gauge of the spindle that support ring formed just at spoke, by movable sleeve
The groove of bar is inserted in the projection of fixed sleeving inwall makes both connect, and holds movable loop bar,
Upwards lifting suspension rod makes support ring move up thus spoke is strutted and arrange in umbrella.
Such scheme to some extent solves that existing to exempt from pneumoperitoneum dilator operative space sudden and violent
Dew deficiency, the problem of stomach wall discontinuity, but the program still also exists: stable
Property poor, easy to operate, strut difficulty when pawl inserts big, wound is big, struts pawl end easy
Thrust the problem that stomach wall causes secondary injury under a stretching force.
Summary of the invention
It is an object of the invention to for the problems referred to above, it is provided that a kind of design advantages of simple, knot
What structure was compact exempts from pneumoperitoneum dilator.
For reaching above-mentioned purpose, present invention employs following technical proposal: originally exempt from pneumoperitoneum support
Drive device, including main cylinder, be connected with at least two in the front end of main cylinder and strut pawl,
It is characterized in that, in described main cylinder, be equipped with mobile cylinder, before mobile cylinder
End is hinged with at least two hinge bars, described hinge bar with strut pawl one_to_one corresponding and hinge
The other end of extension bar is hinged in the middle part of pawl with strutting, described main cylinder and mobile cylinder it
Between be provided with the drive mechanism that mobile cylinder can be driven to move along main cylinder axial reciprocating.Aobvious
So, this dilator can be inserted abdominal cavity when strutting pawl and drawing in, when mobile cylinder is driving
Under the effect of mechanism along main cylinder move axially time hinge bar drive and strut pawl and open at tractive
Realize this dilator under device effect and realize operative space exposure.
Exempting from pneumoperitoneum dilator above-mentioned, the described pawl rear end that struts has axially extending
The first bar hole, the front end of described main cylinder has some axially extended Article 2
Shape hole, the first described bar hole and the second bar hole one_to_one corresponding and be mutually socketed, when
Mobile cylinder mutually draws in and is in rounding state towards respectively strutting pawl when moving in main cylinder
Strut pawl and be moved axially until the first bar hole to main cylinder rear end under the drive of hinge bar
Front end be resisted against the front end of main cylinder and/or strut the rear end of pawl and be resisted against the second bar shaped
The rear end in hole.Use this structure to make to strut when pawl draws in retract part, can protect
Demonstrate,prove enough strut pawl length on the premise of reduce length when strutting pawl rounding state and make
This dilator facilitates insertion into, and so makes this dilator in the state ensureing enough pull strengths
Under facilitate insertion into.
Exempting from pneumoperitoneum dilator above-mentioned, described drive mechanism includes being sheathed on main cylinder
On body and the driving body that can circumferentially rotate relative to main cylinder, in mobile cylinder and driving
It is provided with between body when driving body to circumferentially rotate along main cylinder and can drive mobile cylinder edge
The axially driving assembly that main cylinder axial reciprocating moves.I.e. by rotating driving body time shift
Dynamic cylinder axial reciprocating in main cylinder moves.
Exempt from pneumoperitoneum dilator above-mentioned, set between described mobile cylinder and main cylinder
There is axially directed mechanism.
Exempting from pneumoperitoneum dilator above-mentioned, described axially directed mechanism includes at least one
The individual bar-shaped trough axially arranged along main cylinder, the external side of described moving cylinder be axially arranged with
Guide pad and described guide pad that bar-shaped trough is corresponding slide axially and are arranged on bar-shaped trough
In.I.e. guide pad slides axially so that mobile cylinder axially moves along main cylinder in bar-shaped trough
Dynamic.
Exempting from pneumoperitoneum dilator above-mentioned, described axially driving assembly includes being arranged on
The female thread of side in actuating sleeve body, described guide pad is beyond bar-shaped trough and on guide pad
It is provided with external screw thread intermeshing with female thread.I.e. drive body and leading on mobile cylinder
To block threaded engagement thus realize the movement of mobile cylinder.
Exempting from pneumoperitoneum dilator above-mentioned, the quantity of described bar-shaped trough is two and phase
It is symmetrical arranged mutually.Obviously, when bar-shaped trough quantity is two, the quantity of guide pad is also two
Individual and be oppositely arranged so that good stability when mobile cylinder moves.
Exempting from pneumoperitoneum dilator above-mentioned, the described pawl circumference that struts is uniformly distributed setting,
And each struts pawl front end and is equipped with the fan-shaped tile fragment in width lower end, upper end narrow structure, and
It is small top and big bottom that fan-shaped tile fragment described in strut when pawl is in rounding state surrounds formation
Circular cone tubular structure.Preferably, the pawl that struts here is four and circumference is uniformly arranged,
It is big with the contact area of stomach wall that this structure makes to strut end when pawl opens, and struts pawl end
It is difficult under a stretching force stomach wall be damaged.
Exempt from pneumoperitoneum dilator above-mentioned, set between described driving body and main cylinder
There is the axial limit structure that can prevent driving body to move axially along main cylinder；Described axle
To position limiting structure include being arranged on main cylinder outer circumferential and respectively with drive body two ends phase
Against spacing ring, and described spacing ring is connected as a single entity structure with main cylinder.Prevent
Drive 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 with and is positioned at driving
The installation ring body leant below body and with spacing ring, described installation ring body is provided with
Some circumferences are uniformly distributed the Hook of setting.Hook makes this dilator fill with tractive
Put easy to connect.
Compared with prior art, the advantage originally exempting from pneumoperitoneum dilator is: compact conformation,
Easily operated, good stability, can ensure enough strut pawl length on the premise of subtract
Little length when strutting pawl rounding state makes this dilator facilitate insertion into, and struts pawl and opens
Time end and stomach wall contact area big, strut pawl end and be difficult under a stretching force to abdomen
Wall damages.
Accompanying drawing explanation
The structural representation during open configuration that Fig. 1 provides for the present invention.
The explosive view that Fig. 2 provides for the present invention.
The structural representation during rounding state that Fig. 3 provides for the present invention.
Structural representation during the use state that Fig. 4 provides for the present invention.
In figure, main cylinder the 1, second bar hole 11, spacing ring 12, install ring body 13,
Hook 131, strut pawl the 2, first bar hole 21, fan-shaped tile fragment 22, mobile cylinder
3, hinge bar 4, drive 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
With detailed description of the invention the present invention done further details of theory below in conjunction with the accompanying drawings
Bright.
As Figure 1-4, originally exempt from pneumoperitoneum dilator, including main cylinder 1, at main cylinder 1
Front end be connected with at least two and strut pawl 2, be equipped with moving cylinder in main cylinder 1
Body 3, is hinged with at least two hinge bars 4, hinge bar 4 in the front end of mobile cylinder 3
It is hinged in the middle part of pawl 2 with strutting with the other end strutting pawl 2 one_to_one corresponding and hinge bar 4,
It is provided with between main cylinder 1 and mobile cylinder 3 and mobile cylinder 3 can be driven along main cylinder 1
The drive mechanism 5 that axial reciprocating moves, it is clear that can be by this support when strutting pawl 2 and drawing in
Drive device and insert abdominal cavity, when moving cylinder 3 under the effect of drive mechanism along main cylinder 1 axle
When mobile, hinge bar 4 drives and struts pawl 2 and open and realize this under pulling device 6 acts on
Dilator realizes operative space and exposes.
Preferably, pawl 2 rear end that struts here has axially extended first bar hole 21,
The front end of main cylinder 1 has some axially extended second bar holes 11, the first bar hole
21 with the second bar hole 11 one_to_one corresponding and being mutually socketed, when mobile cylinder 3 is towards main cylinder
Respectively strut pawl 2 when moving in body 1 mutually to draw and be in the pawl 2 that struts of rounding state in and exist
It is moved axially until the first bar hole 21 to main cylinder 1 rear end under the drive of hinge bar 4
Front end be resisted against the front end of main cylinder 1 and/or strut the rear end of pawl 2 and be resisted against Article 2
The rear end in shape hole 11, so makes to strut part of retracting when pawl 2 draws in, can protect
Demonstrate,prove enough strut pawl 2 length on the premise of reduce length when strutting pawl 2 rounding state
This dilator is facilitated insertion into, so makes this dilator ensure enough pull strengths
Facilitate insertion under state.
Further, drive mechanism 5 here includes being sheathed on main cylinder 1 and energy phase
The driving body 51 circumferentially rotated for main cylinder 1, at mobile cylinder 3 and driving body
It is provided with between 51 and can drive moving cylinder when driving body 51 to circumferentially rotate along main cylinder 1
The axially driving assembly that body 3 moves along main cylinder 1 axial reciprocating, is i.e. driven by rotation
Move cylinder 3 axial reciprocating in main cylinder 1 during body 51 to move.
Wherein, between mobile cylinder 3 and main cylinder 1 here, it is provided with axially directed mechanism,
Preferably, axially directed mechanism here includes that at least one is axially arranged along main cylinder 1
Bar-shaped trough 52, be axially arranged with lead corresponding with bar-shaped trough 52 outside mobile cylinder 3
Slide axially to block 53 and guide pad 53 and be arranged in bar-shaped trough 52, i.e. guide pad 53
Slide axially in bar-shaped trough 52 so that mobile cylinder 3 moves axially along main cylinder 1.More
Further, axially driving assembly here includes being arranged on drive inside body 51 interior
Screw thread 511, guide pad 53 is beyond bar-shaped trough 52 and is provided with on guide pad 53 and interior spiral shell
The intermeshing external screw thread of stricture of vagina 511 531, i.e. drives body 51 and moves on cylinder 3
Guide pad 53 threaded engagement thus realize the movement of mobile cylinder 3.
As preferably, the quantity of bar-shaped trough 52 here is two and is symmetrically set,
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 cylinder 3 is moved.The present embodiment struts pawl 2 circumference all
Even distribution is arranged, and each struts pawl 2 front end and is equipped with in width lower end, upper end narrow structure
Fan-shaped tile fragment 22, and sector tile fragment 22 surrounds when strutting pawl 2 and being in rounding state
Form small top and big bottom circular cone tubular structure, it is preferable that the pawl 2 that struts here is
Four and circumference are uniformly arranged, and this structure makes to strut end and stomach wall when pawl 2 opens
Contact area is big, struts pawl 2 end and is difficult to damage stomach wall under a stretching force.
Actuating sleeve can be prevented it addition, be provided with between driving body 51 and main cylinder 1 here
The axial limit structure that body 51 moves axially along main cylinder 1；Axial limit structure includes setting
Put main cylinder 1 outer circumferential and respectively with drive the spacing ring that leans of body 51 two ends
12, and spacing ring 12 is connected as a single entity structure with main cylinder 1, so can prevent actuating sleeve
Body 51 produces on main cylinder 1 and moves axially, and prevents from driving body 51 to depart from main cylinder
1.Wherein, main cylinder 1 here is arranged be positioned at driving body 51 below and with limit
The installation ring body 13 that position ring 12 leans, it is uniform that installation ring body 13 is provided with some circumferences
The Hook 131 that distribution is arranged, Hook 131 makes this dilator and pulling device 6
Easy to connect.
Specific embodiment described herein is only to present invention spirit theory for example
Bright.Those skilled in the art can be to described specific embodiment
Make various amendment or supplement or use similar mode to substitute, but without departing from
The spirit of the present invention or surmount scope defined in appended claims.
Although the most more employ main cylinder the 1, second bar hole 11, spacing ring 12,
Ring body 13, Hook 131 are installed, strut pawl the 2, first bar hole 21, fan-shaped tile fragment
22, move cylinder 3, hinge bar 4, drive mechanism 5, drive body 51, female thread
511, the term such as bar-shaped trough 52, guide pad 53, external screw thread 531, pulling device 6,
But it is not precluded from using the probability of other term.These terms are used to be only used to more
Describe and explain the essence of the present invention easily；It is construed as what any one was added
It is all contrary with spirit of the present invention for limiting.
Claims (9)
1. exempt from a pneumoperitoneum dilator, including main cylinder (1), before main cylinder (1)
End is connected with at least two and struts pawl (2), it is characterised in that described main cylinder
(1) be equipped with mobile cylinder (3) in, be hinged with in the front end of mobile cylinder (3) to
Few two hinge bars (4), described hinge bar (4) with strut pawl (2) one_to_one corresponding
And the other end of hinge bar (4) is hinged with strutting pawl (2) middle part, described main cylinder
It is provided with between body (1) and mobile cylinder (3) and mobile cylinder (3) can be driven along main cylinder
The drive mechanism (5) that body (1) axial reciprocating moves；Described drive mechanism (5) bag
Include and be sheathed on the driving that main cylinder (1) is upper and can circumferentially rotate relative to main cylinder (1)
Body (51), is provided with when driving between mobile cylinder (3) and driving body (51)
Body (51) can drive mobile cylinder (3) along main when circumferentially rotating along main cylinder (1)
The axially driving assembly that cylinder (1) axial reciprocating moves.
The most according to claim 1 exempt from pneumoperitoneum dilator, it is characterised in that described
Pawl (2) rear end that struts have axially extended first bar hole (21), described master
The front end of cylinder (1) has some axially extended second bar holes (11), described
First bar hole (21) and the second bar hole (11) one_to_one corresponding and be mutually socketed, when
Mobile cylinder (3) towards respectively strut when moving in main cylinder (1) pawl (2) mutually draw in and
Be in rounding state struts pawl (2) under the drive of hinge bar (4) to main cylinder (1)
Rear end is moved axially until the front end of the first bar hole (21) and is resisted against main cylinder (1)
Front end and/or strut the rear end of pawl (2) and be resisted against the rear end of the second bar hole (11).
The most according to claim 1 exempt from pneumoperitoneum dilator, it is characterised in that described
Mobile cylinder (3) and main cylinder (1) between be provided with axially directed mechanism.
The most according to claim 3 exempt from pneumoperitoneum dilator, it is characterised in that described
Axially directed mechanism include that at least one is along the axially arranged bar-shaped trough of main cylinder (1)
(52), described mobile cylinder (3) outside is axially arranged with relative with bar-shaped trough (52)
Guide pad (53) and the described guide pad (53) answered slide axially and are arranged on bar-shaped trough
(52) in.
The most according to claim 4 exempt from pneumoperitoneum dilator, it is characterised in that described
Axially driving assembly include being arranged on the female thread (511) driving body (51) inner side,
Described guide pad (53) beyond bar-shaped trough (52) and is provided with on guide pad (53)
With female thread (511) intermeshing external screw thread (531).
The most according to claim 5 exempt from pneumoperitoneum dilator, it is characterised in that described
The quantity of bar-shaped trough (52) be two and be symmetrically set.
7., according to exempting from pneumoperitoneum dilator described in any one in claim 1-6, it is special
Levying and be, described pawl (2) circumference that struts is uniformly distributed setting, and each struts pawl
(2) front end is equipped with the fan-shaped tile fragment (22) in width lower end, upper end narrow structure, and when support
Open the fan-shaped tile fragment (22) described in when pawl (2) is in rounding state surround formation upper end big
The circular cone tubular structure that lower end is little.
The most according to claim 1 exempt from pneumoperitoneum dilator, it is characterised in that described
Driving body (51) and main cylinder (1) between be provided with can prevent drive body (51)
The axial limit structure moved axially along main cylinder (1)；Described axial limit structure bag
Include and be arranged on main cylinder (1) outer circumferential and offset with driving body (51) two ends respectively
The spacing ring (12) leaned on, and described spacing ring (12) and main cylinder (1) be linked as one
Body formula structure.
The most according to claim 8 exempt from pneumoperitoneum dilator, it is characterised in that described
Main cylinder (1) on be arranged be positioned at driving body (51) lower section and with spacing ring (12)
The installation ring body (13) leant, described installation ring body (13) is provided with some circumferences
It is uniformly distributed the Hook (131) of 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 CN104490431A (en) | 2015-04-08 |
| CN104490431B true CN104490431B (en) | 2017-01-04 |
Family
ID=52931958
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 |
|---|---|
| CN (1) | CN104490431B (en) |
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| CN103202719A (en) * | 2012-01-17 | 2013-07-17 | 广西大学 | Spindly non-pneumoperitoneum device for single-port laparoscopy |
| CN203290944U (en) * | 2013-05-03 | 2013-11-20 | 广西大学 | Slotted positioning shaft sleeve of pneumoperitoneum-free mechanical device of laparoscope |
| CN204318814U (en) * | 2014-12-03 | 2015-05-13 | 杭州康基医疗器械有限公司 | Exempt from pneumoperitoneum dilator |
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| CN104490431A (en) | 2015-04-08 |
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