CN101940492B

CN101940492B - Puncture outfit

Info

Publication number: CN101940492B
Application number: CN 201010299260
Authority: CN
Inventors: 陈望东; 单腾
Original assignee: Touchstone International Medical Science Co Ltd
Current assignee: Suzhou Tianchen International Medical Technology Co Ltd
Priority date: 2010-09-30
Filing date: 2010-09-30
Publication date: 2012-01-25
Anticipated expiration: 2030-09-30
Also published as: CN101940492A

Abstract

The invention discloses a puncture outfit used for minimally invasive surgery, which comprises a sleeve assembly and a puncturing lever, wherein the sleeve assembly comprises a sleeve body and a near-end sealing assembly; the sealing assembly comprises a near end, an annular sealing middle end and a far end; the cross sections of the near end, the middle end and the far end of the annular sealing assembly are respectively circles of different diameters; the inner diameters of the near end and the far end are both larger than the inner diameter of the annular sealing middle end; and thereby, the annular sealing assembly forms two horn mouths oppositely arranged. The invention has the advantages of good sealing effect of the sealing assembly, simple process and simple structure.

Description

Perforator

Technical field

The present invention relates to a kind of perforator, relate in particular to a kind of perforator with novel sealing structure.

Background technology

Perforator is a kind of stomach wall also provides entering body cavity passage for other operating theater instruments operating theater instruments that pierces through, and belongs to a kind of Minimally Invasive Surgery apparatus.

Perforator generally includes as the sleeve assembly of other operating theater instruments admission passages and the puncturing lever in the said sleeve assembly.For transdermal, earlier cut epiderm skin, then puncturing lever transdermal and get into body cavity with scalpel.Near-end through to said puncturing lever is exerted pressure, and skin is passed at the tip that promotes said puncturing lever, gets into body cavity up to it.Perforator gets into body cavity, extracts puncturing lever out, and sleeve assembly just can be used as the mis instruments passage of carrying out endo-surgical and splanchnoscopy operation.

At present, perforator uses a kind of lip ring usually, and this lip ring can be surrounded on around the apparatus that inserts in the sleeve assembly; Thereby stop intraperitoneal gas to leak, shown in Chinese patent CN200510130187.8, comprising: a plurality of diaphragm seals; The adjacent diaphragm seal part that overlaps each other; Conical sealing member of final formation, the round tubular apparatus of certain diameter can be passed in conical top, and conical bottom is fixedly connected on the thimble assembly near-end.When puncturing lever or other apparatuses during through sleeve assembly, lip ring is opened and encircles in the surface of puncturing lever or other apparatuses and seals.

Said structure Use Limitation fruit is fine, but requires height for the processing technique level, and structure is more complicated also, can not generally be adopted.

Summary of the invention

The objective of the invention is to propose a kind of perforator of simple in structure, handling ease.

The object of the invention will be achieved through following technical scheme:

A kind of perforator; Comprise: sleeve assembly and puncturing lever; Said sleeve assembly comprises cylindrical shell and proximal seal assembly, and said cylindrical shell is used for accepting and guiding said puncturing lever to pass, and said black box includes a lip ring; Said lip ring is the elastomer along the axis setting of the cylindrical shell of said sleeve assembly; Said lip ring comprises a near-end, a ring packing middle-end, a far-end, and said near-end, ring packing middle-end and far-end limit and form a ring packing inner chamber, and the cross section of the near-end of said lip ring, middle-end and far-end is respectively the circle of three different-diameters; The internal diameter of said near-end and far-end is all greater than the internal diameter of said ring packing middle-end, thereby makes said lip ring form the horn mouth of 2 opposing settings.

Further, said lip ring is formed by stacking at least 2 sheet rubbers successively.

Further, said lip ring is one-body molded by elastomeric material.

Further, said perforator also comprises the sealing stiffener assembly, and said sealing stiffener assembly is arranged at said ring packing middle-end outer surface, is used to tighten said ring packing middle-end its inner chamber is reduced.

Further, said sealing stiffener assembly comprises support and at least one elastic packing band, and said support is provided with at least two root posts, and the two ends of said elastic packing band are fixed on the said column.

Further, said elastic packing band is a rubber strip.

Further, said black box also comprises a duck sealing member, and said duck sealing member is arranged between said lip ring and the said distal barrel end.

Beneficial effect of the present invention is mainly reflected in: black box good sealing effect, the production technology that the present invention relates to are simple.

Description of drawings

Fig. 1 is the perspective view of lip ring;

Fig. 2 is the cutaway view of lip ring;

Fig. 3 is the decomposition texture sketch map of perforator.

1 lip ring, 11 near-ends, 12 ring packing middle-ends

13 far-ends, 14 elastic packing bands, 15 supports

151 columns, 16 ring packing inner chambers, 2 puncturing levers

21 puncturing lever near-ends, 22 puncturing lever far-ends, 3 sleeve assemblies

31 cylindrical shells, 311 cylindrical shell near-ends, 312 distal barrel end

32 cylinder lumens

The specific embodiment

Shown in Fig. 1-3, the invention provides a kind of perforator, said perforator comprises: puncturing lever 2 and sleeve assembly 3, said puncturing lever 2 comprises: puncturing lever near-end 21 and puncturing lever far-end 22.Said sleeve assembly 3 comprises: cylindrical shell 31 and cylinder lumen 32; Said cylindrical shell 31 comprises: cylindrical shell near-end 311 and distal barrel end 312; Said cylindrical shell near-end 311 and the said cylinder lumen 32 of distal barrel end 312 common qualifications, said cylinder lumen 32 is used for accepting and guiding said puncturing lever 2 to pass.

Wherein, Said cylindrical shell 31 is one-part form or two-part, when said cylindrical shell 31 is one-part form, has a lip ring 1 to be arranged at said cylindrical shell near-end 311 places; Said distal barrel end also can be provided with a duck sealing member (not shown); At this moment, said duck sealing member is arranged at said cylindrical shell near-end 311 places, and the more said lip ring 1 of said duck sealing member approaches said distal barrel end 312 more.When said cylindrical shell 31 was the two-part of prior art, cylindrical shell generally was divided into upper casing and sleeve two parts, and said lip ring 1 is arranged in the said upper casing, and simultaneously, said duck sealing member is arranged in the sleeve.

Shown in Fig. 1-2, the lip ring 1 among the present invention is the elastomer along the axis setting of said sleeve assembly 3.Said lip ring 1 comprises: near-end 11, ring packing middle-end 12, far-end 13, and lip ring 11, ring packing middle-end 12 and the far-end 13 common ring packing inner chambers 16 that form that limit.The cross section of said near-end 11, ring packing middle-end 12 and said far-end 13 is circle; And the internal diameter of said near-end 11 and said far-end 13 will be far longer than the internal diameter of said ring packing middle-end 12; Thereby make said lip ring form the horn mouth of 2 opposing settings, promptly be similar to hourglass shape.Said ring packing middle-end can closely be encircled the Minimally Invasive Surgery apparatus through said sleeve assembly.

Said perforator 1 also comprises the sealing stiffener assembly, and said sealing stiffener assembly comprises support 15 and elastic packing band 14, and said elastic packing band 14 is for having better elastic rubber strip.Said support 15 is arranged on the said cylindrical shell near-end 311, and said support 15 comprises: column 151, and said column is used for fixing the end of said elastic packing band 14, and every elastic packing band 14 need be fixing by two columns 151 usually.

Said elastic packing band 14 is handed over each other and is buckled; Solid is wound in the outer surface of said ring packing middle-end 12; Make the ring packing inner chamber be able to close through certain pulling force; The two ends of said elastic packing band 14 are fixed on the corresponding column 151; Because the column 151 that is used for fixing elastic packing band 14 is apart from each other spatially, thus elastic packing band 14 adapt to from 5mm to 12mm diameter apparatus through the time telescopic ratio can be very not big, thereby can realize sealing and can be very not big to the frictional resistance of apparatus.

When the Minimally Invasive Surgery apparatus did not pass through lip ring 1, said ring packing inner chamber 16 can keep sealing state under the effect of said sealing stiffener assembly; When the Minimally Invasive Surgery apparatus passes through lip ring 1; It is big that the internal diameter of said ring packing middle-end 12 becomes, and the inwall of said ring packing middle-end 12 is encircled in the surface of apparatus apparatus is sealed, and elastic packing band 14 elongates; Pulling force increases, thereby has guaranteed the quality of sealing.

In this preferred embodiment, said lip ring 1 is one-body molded by elastomer, makes said lip ring 1 have preferably tear resistance like this and is prone to trafficability characteristic.Certainly, said lip ring also can equally be stacked by 2 above sheet rubber recalling rose petals and form.

In this preferred embodiment, said lip ring and duck sealing member are referred to as black box, for the consideration of cost, can save the duck sealing member.Like this, said cylindrical shell 31 is during as one-part form, and the designs simplification of whole apparatus, cost also reduce further.

The present invention still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming all drop within protection scope of the present invention.

Claims

1. perforator, comprising: sleeve assembly and puncturing lever, said sleeve assembly comprise cylindrical shell and proximal seal assembly, and said cylindrical shell is used for accepting and guiding said puncturing lever to pass, and said proximal seal assembly includes a lip ring, it is characterized in that:

Said lip ring is the elastomer along the axis setting of said cylindrical shell; Said lip ring comprises a near-end, a ring packing middle-end, a far-end; Said near-end, ring packing middle-end and far-end limit and form a ring packing inner chamber; The cross section of the near-end of said lip ring, middle-end and far-end is respectively the circle of three different-diameters; The internal diameter of said near-end and far-end is all greater than the internal diameter of said ring packing middle-end, thereby makes said lip ring form the horn mouth of 2 opposing settings.

2. perforator according to claim 1 is characterized in that: said lip ring is formed by stacking at least 2 sheet rubbers successively.

3. perforator according to claim 1 is characterized in that: said lip ring is one-body molded by elastomeric material.

4. perforator according to claim 1 is characterized in that: said perforator also comprises the sealing stiffener assembly, and said sealing stiffener assembly is arranged at said ring packing middle-end outer surface, is used to tighten said ring packing middle-end its inner chamber is reduced.

5. perforator according to claim 4; It is characterized in that: said sealing stiffener assembly comprises support and at least one elastic packing band; Said support is provided with at least two root posts, and said support is arranged at said cylindrical shell near-end, and the two ends of said elastic packing band are fixed on the said column.

6. perforator according to claim 5 is characterized in that: said elastic packing band is a rubber strip.

7. perforator according to claim 1 is characterized in that: said proximal seal assembly also comprises a duck sealing member, and said duck sealing member is arranged between said lip ring and the said distal barrel end.