CN208435741U - A kind of centreless puncture outfit - Google Patents
A kind of centreless puncture outfit Download PDFInfo
- Publication number
- CN208435741U CN208435741U CN201721886962.7U CN201721886962U CN208435741U CN 208435741 U CN208435741 U CN 208435741U CN 201721886962 U CN201721886962 U CN 201721886962U CN 208435741 U CN208435741 U CN 208435741U
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- China
- Prior art keywords
- centreless
- puncture
- puncture outfit
- puncture tip
- locating slot
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Abstract
The utility model discloses a kind of centreless puncture outfit, including casing, puncture tip and shaft, casing includes first rotating shaft bracket and locating slot；Puncture tip includes the second rotary shaft rack and positioning column；First rotating shaft bracket and the second rotary shaft rack all have the through-hole for accommodating shaft；Locating slot is for accommodating positioning column.The connection structure of the centreless puncture outfit of the utility model 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 utility model relates to a kind of centreless puncture outfits, 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 utility model the seal assembly of centreless puncture outfit with and seal assembly with
The connection type of casing has been 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 new centreless puncture outfit, and including new connection structure, connection structure is for puncture tip and set
The connection of pipe.
A kind of centreless puncture outfit, the centreless puncture outfit include casing, puncture tip and shaft, and described sleeve pipe includes first
Rotary shaft rack and locating slot, the puncture tip include the second rotary shaft rack and positioning column, the first rotating shaft bracket and described
Second rotary shaft rack all has the through-hole for accommodating the shaft, and 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.
The connection structure of centreless puncture outfit enables to the pivot of puncture tip flexible, and in instrument insertion, puncture tip is easy
In unlatching, when puncture outfit is extracted, puncture tip is easy to close.Connection structure also may make not to be produced between puncture tip and casing
Raw undesirable pivot.
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 embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings.It is practical at this
In novel description, 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 ",
The orientation or positional relationship of the instructions such as " axial direction ", " radial direction ", " circumferential direction " is 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.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to
For explaining the utility model, and should not be understood as limiting the present invention.
As shown in Figure 1, centreless puncture outfit 100 includes casing 2, shaft 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 of seal assembly 3 be documented in the applicant it
In the patent application document of preceding submission, 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.
Due to using shaft to connect between puncture tip 1 and casing 2, the connection knot in pivoting process including shaft
The resistance that structure needs to overcome is smaller, thus the pivot of puncture tip is more flexible.
Claims (12)
1. a kind of centreless puncture outfit, the centreless puncture outfit includes casing, puncture tip and shaft, which is characterized in that the set
Pipe includes first rotating shaft bracket and locating slot, and the puncture tip includes the second rotary shaft rack and positioning column, the first rotating shaft
Bracket and second rotary shaft rack all have the through-hole for accommodating the shaft, and the locating slot is for accommodating the positioning
Column.
2. centreless puncture outfit as described in claim 1, which is characterized in that the first rotating shaft bracket and the locating slot are all provided with
It is placed in the end face of the end of described sleeve pipe.
3. such as claim 1,2 described in any item centreless puncture outfits, which is characterized in that described sleeve pipe further includes accommodation groove, institute
Accommodation groove is stated for accommodating second rotary shaft rack.
4. centreless puncture outfit as claimed in claim 3, which is characterized in that the width of the accommodation groove is greater than second shaft
The width of bracket.
5. centreless puncture outfit as claimed in claim 3, which is characterized in that the number of the accommodation groove and second rotary shaft rack
Amount is two.
6. centreless puncture outfit as claimed in claim 5, which is characterized in that two accommodation grooves are arc-shaped distribution；Two
The linear distribution of second rotary shaft rack.
7. centreless puncture outfit as described in claim 1, which is characterized in that second rotary shaft rack and the positioning column are all provided with
It is placed in the end face of the end of the puncture tip.
8. centreless puncture outfit as described in claim 1, which is characterized in that the quantity of the locating slot and the positioning column is
Three；Three locating slots are uniformly distributed, and three positioning columns are uniformly distributed.
9. centreless puncture outfit as claimed in claim 2, which is characterized in that the end face and the central axis of described sleeve pipe mutually hang down
Directly；The end is circle.
10. centreless puncture outfit as claimed in claim 7, which is characterized in that the central axis of the end face and the puncture tip
Line is perpendicular；The end is circle.
11. such as claim 1,8 described in any item centreless puncture outfits, which is characterized in that the locating slot accommodates the positioning
After column, the frictional force between the locating slot and the positioning column makes tentatively solid between the puncture tip and described sleeve pipe
It is fixed.
12. centreless puncture outfit as described in claim 1, which is characterized in that be provided with stress on the inner wall of the puncture tip
Face, the stress surface are plane or curved surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017213185630 | 2017-10-12 | ||
| CN201721318563 | 2017-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208435741U true CN208435741U (en) | 2019-01-29 |
Family
ID=65095480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721886962.7U Active CN208435741U (en) | 2017-10-12 | 2017-12-28 | A kind of centreless puncture outfit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208435741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109646083A (en) * | 2017-10-12 | 2019-04-19 | 江苏风和医疗器材股份有限公司 | A kind of centreless puncture outfit |
-
2017
- 2017-12-28 CN CN201721886962.7U patent/CN208435741U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109646083A (en) * | 2017-10-12 | 2019-04-19 | 江苏风和医疗器材股份有限公司 | A kind of centreless puncture outfit |
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