CN201847743U - Threaded sleeve - Google Patents
Threaded sleeve Download PDFInfo
- Publication number
- CN201847743U CN201847743U CN2010205512056U CN201020551205U CN201847743U CN 201847743 U CN201847743 U CN 201847743U CN 2010205512056 U CN2010205512056 U CN 2010205512056U CN 201020551205 U CN201020551205 U CN 201020551205U CN 201847743 U CN201847743 U CN 201847743U
- Authority
- CN
- China
- Prior art keywords
- screw thread
- face
- track
- diameter section
- threaded sleeve
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a threaded sleeve comprising a casing and an inner cavity, wherein the inner cavity is positioned in the casing and is used as a channel of a surgery instrument in a minimal invasive surgery; the casing consists of a large-diameter section and a small-diameter section; at least one threaded track is arranged on the outer surface of the small-diameter section; threads of the treaded track comprise a forward surface and a backward surface; an acute angle is formed between the forward surface and the outer surface of the casing; and a right angle or an obtuse angle is formed between the backward surface and the outer surface of the casing. The utility model has the main benefits as follows: by adopting the threaded track of which the forward surface is an acute angle inclined plane and the backward surface is a right angle or obtuse angle plane, the sleeve realizes the mode of propelling and rotationally retracting, so that the sleeve cannot fall off in the surgery process and can be retracted from tissue smoothly after surgery; and by adopting a dual-thread or multi-thread track, the sleeve can be more quickly screwed in and out after surgery and is not easy to separate out due to the pressure from an abdominal cavity.
Description
Technical field
This utility model relates to a kind of perforator, relates in particular to a kind of threaded sleeve of perforator.
Background technology
Perforator is a kind ofly to pierce through stomach wall and for other operating theater instruments provide the operating theater instruments that enters the body cavity passage, belong to a kind of Minimally Invasive Surgery apparatus.
Perforator generally includes as the sleeve of other operating theater instruments admission passages and the puncturing lever in the described sleeve.For transdermal, earlier cut epiderm skin, then puncturing lever transdermal and enter body cavity with scalpel.Exert pressure by the near-end to described puncturing lever, skin is passed at the tip that promotes described puncturing lever, enters body cavity up to it.Perforator enters body cavity, extracts puncturing lever out, and barrel bore just can be used as the mis instruments passage of carrying out endo-surgical and splanchnoscopy operation.
At present, the telescopic outer surface of perforator is level and smooth bright finish, a problem often occurs in operation: promptly after sleeve has placed in the body cavity; when inflating in body cavity, because endoceliac pressure is bigger, the grip pipe is extruded in body cavity through regular meeting; cause the abdominal cavity to be lost heart, image operation process.
Prior art has a kind of improvement to be, telescopic outer surface is provided with parallel antislip ring, though solved the problem that sleeve pipe comes off like this, but another kind of problem appears again: when promptly needing to extract sleeve pipe out after operation is finished in body cavity, antislip ring can play an effect of pullling to tissue again, can the tissue around the sleeve pipe be pulled bad, increase the difficulty of patient's wound healing.
The utility model content
The purpose of this utility model is the threaded sleeve that proposes a kind of simple in structure, safe and reliable perforator.
The purpose of this utility model will be achieved by the following technical programs:
A kind of threaded sleeve, comprise: housing and be arranged in described shell intravital, as the inner chamber of Minimally Invasive Surgery operating theater instruments passage, described housing is made up of enlarged diameter section and reduced diameter section, the outer surface of described reduced diameter section is provided with at least one screw thread track, the screw thread of described screw thread track comprises and advances face and retreat face, face and housing outer surface are the acute angle setting so advance, and describedly retreat face and housing outer surface at right angles or the obtuse angle setting.
Further, the screw thread of described screw thread track is the right-angled trapezium screw thread, and the face that advances of described screw thread is the inclined-plane, and the face that retreats of described screw thread is a flat face.
Perhaps, the screw thread of described screw thread track is the right angled triangle screw thread, and the face that advances of described screw thread is the inclined-plane, and the face that retreats of described screw thread is a flat face.
Again further, the outer surface of described reduced diameter section is provided with the screw thread track of the uniform pitch more than 2 or 2.
The beneficial effects of the utility model are mainly reflected in:
(1) adopting the face that advances is that acute angle bevel, the face of retreating are the planar screw thread tracks in right angle or obtuse angle, make sleeve pipe realize advancing the mode of moving back of revolving, both can guarantee that sleeve pipe can not come off in operation process, this sleeve pipe can successfully be withdrawed from from tissue after operation.
(2) adopt two screw threads or many screw threads track, can realize that sleeve pipe can withdraw from more apace after operation from tissue, and be subjected to abdominal pressure and be difficult for deviating from.
Description of drawings
Fig. 1: the schematic perspective view of this utility model threaded sleeve.
Fig. 2: the front view of this utility model threaded sleeve.
Fig. 3: among Fig. 2 along the cutaway view of A-A direction.
Fig. 4: the enlarged drawing of B part among Fig. 3.
Fig. 5: the enlarged drawing of second embodiment of B part among Fig. 3.
Wherein:
1 housing, 2 inner chambers, 3 reduced diameter sections
4 enlarged diameter sections, 5 screw thread tracks, 51 first screw thread tracks
52 second screw thread tracks, 6 flat faces, 7 inclined-planes
The specific embodiment
As Figure 1-3, this utility model has disclosed a kind of threaded sleeve, comprise: housing 1 and be arranged in inner chamber 2 described housing 1, that play Minimally Invasive Surgery operating theater instruments channeling, consistent with prior art, described housing 1 is made up of enlarged diameter section 4 and reduced diameter section 3.
In this utility model, the outer surface of the reduced diameter section 3 of described housing 1 is provided with at least one screw thread track 5, the screw thread of described screw thread track 5 comprises the face and retreat face of advancing, so the face that advances is the acute angle setting with housing outer surface, describedly retreats face and housing outer surface is rectangular or the obtuse angle setting.
Further, as shown in Figure 4, the screw thread of described screw thread track 5 is the right-angled trapezium screw thread, and the face that advances of described screw thread is inclined-plane 7, and the face that retreats of described screw thread is a flat face 6.Perhaps, as shown in Figure 5, the screw thread of described screw thread track 5 is the right angled triangle screw thread, and the face that advances of described screw thread is inclined-plane 7, and the face that retreats of described screw thread is a flat face 6.
The employing face that advances is that acute angle bevel, the face of retreating are the planar screw thread tracks in right angle or obtuse angle, makes sleeve pipe realize advancing the mode of moving back of revolving.When needs puncture, equally operate with prior art, to exert pressure by near-end to described puncturing lever, skin is passed at the tip that promotes described puncturing lever, enters body cavity up to it.Face is an acute angle bevel because advance, so threaded sleeve of the present utility model is easy to enter tissue.When in operation process,, played the effect of slip-off preventing because the face that retreats of screw thread is right angle or plane, obtuse angle.After operation is finished, threaded sleeve spiral of the present utility model is withdrawn from an organization, tissue just is similar in the screw thread track 5 of threaded sleeve and slides like this, makes to organize not pullled badly by threaded sleeve, and this sleeve pipe can successfully be withdrawed from from tissue.
Specifically as shown in Figure 2, screw thread track of the present utility model can adopt two screw threads or many screw threads track, and what show among the figure is the first screw thread track 51 and the second screw thread track 52 of 2 uniform pitchs.Like this,, make sleeve pipe faster, realize revolving fast moving back function at the process medium velocity that retreats because pitch is bigger.
This utility model still has numerous embodiments, and all employing equivalents or equivalent transformation and all technical schemes of forming all drop within the protection domain of the present utility model.
Claims (4)
1. threaded sleeve, comprise: housing (1) and be arranged in described housing (1), as the inner chamber (2) of Minimally Invasive Surgery operating theater instruments passage, described housing (1) is made up of enlarged diameter section (4) and reduced diameter section (3), it is characterized in that: the outer surface of described reduced diameter section (3) is provided with at least one screw thread track (5), the screw thread of described screw thread track (5) comprises and advances face and retreat face, face and housing outer surface are the acute angle setting so advance, and describedly retreat face and housing outer surface at right angles or the obtuse angle setting.
2. threaded sleeve according to claim 1 is characterized in that: the screw thread of described screw thread track (5) is the right-angled trapezium screw thread, and the face that advances of described screw thread is inclined-plane (7), and the face that retreats of described screw thread is flat face (6).
3. threaded sleeve according to claim 1 is characterized in that: the screw thread of described screw thread track (5) is the right angled triangle screw thread, and the face that advances of described screw thread is inclined-plane (7), and the face that retreats of described screw thread is flat face (6).
4. according to described any one threaded sleeve of claim 1 to 3, it is characterized in that: the outer surface of described reduced diameter section (3) is provided with the screw thread track (5) of the uniform pitch more than 2 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205512056U CN201847743U (en) | 2010-09-30 | 2010-09-30 | Threaded sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205512056U CN201847743U (en) | 2010-09-30 | 2010-09-30 | Threaded sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201847743U true CN201847743U (en) | 2011-06-01 |
Family
ID=44090162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205512056U Expired - Fee Related CN201847743U (en) | 2010-09-30 | 2010-09-30 | Threaded sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201847743U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102949227A (en) * | 2011-08-24 | 2013-03-06 | 苏州天臣国际医疗科技有限公司 | Puncture set |
| CN105769299A (en) * | 2014-12-23 | 2016-07-20 | 广州迪克医疗器械有限公司 | Banding buckle and trocar |
-
2010
- 2010-09-30 CN CN2010205512056U patent/CN201847743U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102949227A (en) * | 2011-08-24 | 2013-03-06 | 苏州天臣国际医疗科技有限公司 | Puncture set |
| CN105769299A (en) * | 2014-12-23 | 2016-07-20 | 广州迪克医疗器械有限公司 | Banding buckle and trocar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20120930 |