CN109646082A - A kind of connection structure for centreless puncture outfit - Google Patents
A kind of connection structure for centreless puncture outfit Download PDFInfo
- Publication number
- CN109646082A CN109646082A CN201711466975.3A CN201711466975A CN109646082A CN 109646082 A CN109646082 A CN 109646082A CN 201711466975 A CN201711466975 A CN 201711466975A CN 109646082 A CN109646082 A CN 109646082A
- Authority
- CN
- China
- Prior art keywords
- connection structure
- puncture outfit
- centreless
- puncture
- rotary shaft
- 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.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
Abstract
The invention discloses a kind of connection structure for centreless puncture outfit, the centreless puncture outfit includes puncture tip and casing;Connection structure includes shaft, the first rotating shaft bracket for belonging to casing and locating slot and the second rotary shaft rack and positioning column for belonging to puncture tip;First rotating shaft bracket and the second rotary shaft rack all have the through-hole for accommodating shaft;Locating slot is for accommodating the positioning column.The connection structure of centreless puncture outfit of the invention enables to the pivot of puncture tip flexible, and in instrument insertion, puncture tip is easy to open, and when puncture outfit is extracted, puncture tip is easy to close.Connection structure, which also may make, does not generate undesirable pivot between puncture tip and casing.
Description
Technical field
The present invention relates to a kind of connection structures for centreless puncture outfit, belong to medical instruments field.
Background technique
Puncture outfit can establish into channel, enter body cavity for Minimally Invasive Surgery instrument, while providing gas passage, in body cavity
Gaseous environment is established, inside to carry out inspection or surgical procedure.Body cavity includes abdominal cavity.
Having core puncture outfit and centreless puncture outfit includes seal assembly and casing, and mutually isostructural seal assembly and casing can
Suitable for centreless puncture outfit and there is core puncture outfit.In the present invention seal assembly of centreless puncture outfit with and seal assembly and casing
Connection type be documented in the patent application document submitted before the applicant, including CN201710216813.8,
CN201710216814.2、CN201710299930.5。
The applicant before have submitted the several parts of applications for a patent for invention about centreless puncture outfit, as CN106333734A,
CN106377302A and CN106333733A etc..The structure pair of coupling part between the puncture tip and casing of centreless puncture outfit
There is larger impact in the performance of puncture outfit.
Summary of the invention
The applicant proposes that the connection structure of new centreless puncture outfit, connection structure are used for the company of puncture tip and casing
It connects.
A kind of connection structure for centreless puncture outfit, the centreless puncture outfit include puncture tip and casing, the company
Binding structure includes shaft, the first rotating shaft bracket for belonging to described sleeve pipe and locating slot and belongs to the of the puncture tip
Two rotary shaft racks and positioning column, the first rotating shaft bracket and second rotary shaft rack all have for accommodating the shaft
Through-hole, the locating slot is for accommodating the positioning column.
The first rotating shaft bracket and the locating slot are all set in the end face of the end of described sleeve pipe.
Described sleeve pipe further includes accommodation groove, and the accommodation groove is for accommodating second rotary shaft rack.
The width of the accommodation groove is greater than the width of second rotary shaft rack.
The quantity of the accommodation groove and second rotary shaft rack is two.
Two accommodation grooves are arc-shaped distribution;Two linear distributions of the second rotary shaft rack.
Second rotary shaft rack and the positioning column are all set in the end face of the end of the puncture tip.
The quantity of the locating slot and the positioning column is three;Three locating slots are uniformly distributed, described in three
Positioning column is uniformly distributed.
The central axis of the end face and described sleeve pipe is perpendicular;The end is circle.
The end face and the central axis of the puncture tip are perpendicular;The end is circle.
After the locating slot accommodates the positioning column, the frictional force between the locating slot and the positioning column makes described
It is tentatively fixed between puncture tip and described sleeve pipe.
Stress surface is provided on the inner wall of the puncture tip, the stress surface is plane or curved surface.
Connection structure enables to the pivot of puncture tip flexible, and in instrument insertion, puncture tip is easy to open, and is wearing
Puncture tip is easy to close when thorn device is extracted.Connection structure, which also may make, does not generate undesirable pivot between puncture tip and casing
Turn.
Detailed description of the invention
Fig. 1 is the entirety of centreless puncture outfit;
Fig. 2 is centreless puncture outfit when puncture tip is opened;
Fig. 3 is the structure of the first end of casing;
Fig. 4 is the structure of puncture tip.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings.It is retouched in of the invention
In stating, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower",
"front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " clockwise ", " counterclockwise ", " axis
To ", " radial direction ", the orientation or positional relationship of the instructions such as " circumferential direction " be to be based on the orientation or positional relationship shown in the drawings.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to for solving
The present invention is released, and is not considered as limiting the invention.
As shown in Figure 1, centreless puncture outfit 100 includes seal assembly 3, casing 2 and puncture tip 1.
Casing 2 is hollow pipe, with first end 21 and second end.The second end of casing 2 is selected by seal assembly 3
Property sealing, first end 21 selectively unlocks or is closed by puncture tip 1.The structure and seal assembly 3 and casing of seal assembly 3
2 connection type has been documented in the patent application document submitted before the applicant, including CN201710216813.8,
CN201710216814.2, CN201710299930.5, this will not be repeated here.
As shown in figure 4, puncture tip 1 includes first end, second end, middle part and sword.First end is tip, second end
Shape is identical as the shape of first end 21 of casing 2, and the present embodiment is preferably circular.It is intermediate between first end and second end
The outer surface in portion, middle part is smooth convex outward, also, sword is provided on the outer surface of middle part.Preferably, puncture tip
The end face of the second end at end 1 and the central axis of puncture tip 1 are perpendicular.
Puncture tip 1 is pivotally attached with casing 2.
Specifically, as shown in figure 3, casing 2 includes first rotating shaft bracket 212 and two accommodation grooves 211, first rotating shaft bracket
212 and two accommodation grooves 211 be all set on the end face of first end 21 of casing 2.First rotating shaft bracket 212 is located at two accommodatings
Between slot 211, first rotating shaft bracket 212, which has, to be passed through for shaft (not shown) and accommodates the through-hole of shaft.Preferably, first end
21 end face and the central axis of casing 2 are perpendicular.
As shown in figure 4, puncture tip 1 includes two the second rotary shaft racks 11, two the second rotary shaft racks 11 all have logical
Hole 111, through-hole 111 pass through for shaft (not shown) and accommodate shaft.Two linear distributions of the second rotary shaft rack 11, i.e., two
The central axis of a second rotary shaft rack 11 is conllinear, and two through-holes 111 are also on same straight line.Puncture tip 1 further include to
A few positioning column 12, preferably three.Two the second rotary shaft racks 11 and three positioning columns 12 are arranged at puncture tip 1
On the end face of second end.Correspondingly, casing 2 includes locating slot (not shown) identical with the quantity of positioning column 12, and locating slot is set
It is placed on the end face of first end 21, locating slot is to accommodate positioning column 12.Preferably, three positioning columns 12 are in puncture tip 1
It is uniformly distributed on the end face of second end, three locating slots are uniformly distributed on the end face of the first end 21 of casing 2.12 quilt of positioning column
Be placed in locating slot so that puncture tip 1 is conllinear with the central axis of casing 2, to realize positioning function, due to positioning column 12 with
There is frictional force between locating slot, can to realize between puncture tip 1 and casing 2 and tentatively fix, prevent 1 phase of puncture tip
Undesirable pivot is generated for casing 2.The meaning tentatively fixed: the frictional force between positioning column 12 and locating slot is little, energy
The gravity that puncture tip 1 is subject in itself is offset, so that puncture tip 1 will not generate pivot under gravity;It is inserted in instrument
Fashionable, the external force that instrument applies puncture tip 1 is greater than the frictional force between positioning column 12 and locating slot, and puncture tip 1 produces
It is raw to pivot, so that instrument is pierced by from casing 2 and enters the body cavity of patient.Puncture tip 1 pivots and state such as Fig. 2 after opening
It is shown, instrument is not shown in the figure.
Accommodation groove 211 is to accommodate the second rotary shaft rack 11.When each second rotary shaft rack 11 is placed in corresponding appearance
After setting slot 211, the through-hole 111 of two the second rotary shaft racks 11 is conllinear with the through-hole of first rotating shaft bracket 212.Due to accommodation groove
211 width is greater than the width of the second rotary shaft rack 11, and due to two linear distributions of the second rotary shaft rack 11, two
Accommodation groove 211 is arc-shaped distribution, therefore has space that shaft is allowed to penetrate, and specifically, shaft is worn from one end of a through-hole 111
Enter, be pierced by after the through-hole of first rotating shaft bracket 212 from one end of another through-hole 111, then the both ends of shaft are expanding, makes
The diameter for obtaining the both ends of shaft is greater than the diameter of through-hole 111, by shaft indwelling in two through-holes 111 and first rotating shaft bracket 212
Through-hole among.
Stress surface is provided on the inner wall of the middle part of puncture tip 1.When instrument is inserted into, the top of instrument passes through stress surface
It exerts a force to puncture tip 1, so that puncture tip 1 overcomes the frictional force between positioning column 12 and locating slot and produces by axis of shaft
Raw to pivot, so that the first end 21 of casing 2 is opened, instrument be can be inserted into the body cavity of patient.Stress surface can be plane or
Curved surface.
Puncturing hole with the extraction of centreless puncture outfit 100, on the outer surface and patient body of the middle part of puncture tip 1
Hole wall be in contact, it is generated make every effort to promote so that puncture tip 1 is generated pivot, can so that puncture tip 1 and casing 2 are conllinear
Casing 2, puncture tip 1 are successively extracted out of patient's body lumen, realize the separation of centreless puncture outfit 100 and patient body.
Connection structure includes shaft, first rotating shaft bracket 212, locating slot, the second rotary shaft rack 11 and positioning column 12.Due to
It is connected between puncture tip 1 and casing 2 using shaft, what the connection structure in pivoting process including shaft needed to overcome
Resistance is smaller, thus the pivot of puncture tip is more flexible.
Claims (12)
1. a kind of connection structure for centreless puncture outfit, the centreless puncture outfit includes puncture tip and casing, and feature exists
In the connection structure includes shaft, the first rotating shaft bracket for belonging to described sleeve pipe and locating slot and belongs to the puncture
Second rotary shaft rack and positioning column at tip, the first rotating shaft bracket and second rotary shaft rack all have for accommodating
The through-hole of shaft is stated, the locating slot is for accommodating the positioning column.
2. as described in claim 1 be used for centreless puncture outfit connection structure, which is characterized in that the first rotating shaft bracket and
The locating slot is all set in the end face of the end of described sleeve pipe.
3. such as the described in any item connection structures for centreless puncture outfit of claim 1,2, which is characterized in that described sleeve pipe is also
Including accommodation groove, the accommodation groove is for accommodating second rotary shaft rack.
4. being used for the connection structure of centreless puncture outfit as claimed in claim 3, which is characterized in that the width of the accommodation groove is big
In the width of second rotary shaft rack.
5. being used for the connection structure of centreless puncture outfit as claimed in claim 3, which is characterized in that the accommodation groove and described the
The quantity of two rotary shaft racks is two.
6. being used for the connection structure of centreless puncture outfit as claimed in claim 5, which is characterized in that two accommodation grooves are in circle
Arc distribution;Two linear distributions of the second rotary shaft rack.
7. as described in claim 1 be used for centreless puncture outfit connection structure, which is characterized in that second rotary shaft rack and
The positioning column is all set in the end face of the end of the puncture tip.
8. being used for the connection structure of centreless puncture outfit as described in claim 1, which is characterized in that the locating slot and described fixed
The quantity of position column is three;Three locating slots are uniformly distributed, and three positioning columns are uniformly distributed.
9. being used for the connection structure of centreless puncture outfit as claimed in claim 2, which is characterized in that the end face and described sleeve pipe
Central axis it is perpendicular;The end is circle.
10. being used for the connection structure of centreless puncture outfit as claimed in claim 7, which is characterized in that worn with described the end face
The central axis at puncture tip end is perpendicular;The end is circle.
11. such as the described in any item connection structures for centreless puncture outfit of claim 1,8, which is characterized in that the positioning
After slot accommodates the positioning column, the frictional force between the locating slot and the positioning column makes the puncture tip and the set
It is tentatively fixed between pipe.
12. as described in claim 1 be used for centreless puncture outfit connection structure, which is characterized in that the puncture tip it is interior
Stress surface is provided on wall, the stress surface is plane or curved surface.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2017109520221 | 2017-10-12 | ||
CN201710952022 | 2017-10-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN109646082A true CN109646082A (en) | 2019-04-19 |
Family
ID=66109530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201711466975.3A Withdrawn CN109646082A (en) | 2017-10-12 | 2017-12-28 | A kind of connection structure for centreless puncture outfit |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109646082A (en) |
-
2017
- 2017-12-28 CN CN201711466975.3A patent/CN109646082A/en not_active Withdrawn
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190419 |
|
WW01 | Invention patent application withdrawn after publication |