CN104068922B - Protection puncture needle - Google Patents
Protection puncture needle Download PDFInfo
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- CN104068922B CN104068922B CN201410295748.9A CN201410295748A CN104068922B CN 104068922 B CN104068922 B CN 104068922B CN 201410295748 A CN201410295748 A CN 201410295748A CN 104068922 B CN104068922 B CN 104068922B
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- spring
- protection
- fixture block
- block
- protection slide
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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
- A61B17/34—Trocars; Puncturing needles
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Knives (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The present invention relates to a kind of protection puncture needle, it is primarily adapted for use in the laparoscopic surgery of human body.The invention is characterized in that and be additionally provided with protection slide bar, fixture block, protection slide block, spring three, spring four and spring five in protection knife bar mechanism, protection slide bar is connected with cutter window and needle guard main body respectively, and fixture block and protection slide block are positioned at needle guard main body；Protection slide bar and fixture block and protection slide block match, and spring three, spring four and spring five are arranged on protection slide block, and spring three and spring four control the side-to-side movement of protection slide block, and spring five controls seesawing of protection slide block；Being additionally provided with spring one and spring two, spring one controls the up and down motion of knife bar assembly, and spring two controls the up and down motion of fixture block.The present invention is after puncturing broken stomach wall, and the protection protected slide block of slide bar is spacing up and down, and when front end is again by external force, without again exposing piercing blade, blade is in guard mode, it is ensured that patient will not be subject to unexpected injury because of puncture, uses safe and reliable and convenient.
Description
Technical field
The present invention relates to a kind of protection puncture needle, it belongs to medical apparatus and instruments, is primarily adapted for use in the laparoscopic surgery of human body.
Background technology
In prior art, human abdominal cavity operation is widely used puncture needle, is particularly used in Minimally Invasive Surgery field and laparoscopic surgery.Common puncture needle includes knife bar assembly, knife bar mechanism and bonnet; bonnet is connected with knife bar assembly and knife bar mechanism respectively; knife bar mechanism includes cutter window and needle guard main body; owing to the attachment structure between each assembly designs not reasonable; and knife bar mechanism do not protect device and stopping means, safety that operation uses it cannot be guaranteed that.
Certainly, also having the puncture needle installing protection knife bar mechanism, but they are usually a black box, and namely each part must be installed successively, and connecting portion mostly is glued, during installation fee, inconvenience；Meanwhile, puncture needle must press before puncture keying button could work.
Chinese utility model patent application number 022492445 discloses one " canula puncture needle "; this puncture needle includes housing 1, nook closing member 3, sleeve pipe 4, knife bar 6, piercing blade 7, safe sleeve pipe 11, back-moving spring 12 and insurance thimble 24; but its structural design or not reasonable, can not really play the protective effect that we are described in operation process.Referring specifically to Fig. 5, when insurance thimble 24 is depressed, whole device is in the state of de-preservation; after wearing out stomach wall; owing to the cone-shaped nose of safe sleeve pipe 11 is no longer influenced by resistance, under the effect of back-moving spring 12, safe sleeve pipe 11 ejects forward, piercing blade is again encased again；In this process, insurance thimble 24 is depressed always, although piercing blade 7 encases again; but when the cone-shaped nose of safe sleeve pipe 11 touches internal organs, front end is under pressure and to after-contraction, exposes again piercing blade 7; losing protective effect, operation uses or dangerous.
It addition, also have some puncture needles, although piercing blade has a protective effect, but its complex structural designs, cost is high, even with inconvenience.
Summary of the invention
The technical problem to be solved is to overcome above-mentioned deficiency existing in prior art, and provides the protection puncture needle that a kind of reasonable in design is simple, operation use has safeguard protection effect.
This invention address that the problems referred to above be the technical scheme is that, this protection puncture needle includes knife bar assembly, protection knife bar mechanism and bonnet; bonnet is connected with knife bar assembly and protection knife bar mechanism respectively; protection knife bar mechanism includes cutter window and needle guard main body; it is characterized in that: in described protection knife bar mechanism, be additionally provided with protection slide bar, fixture block, protection slide block, spring three, spring four and spring five; needle guard main body is stretched out at the two ends that the front portion of protection slide bar is positioned at needle guard main body and fixture block with cutter window clamping, rear portion and the socket of needle guard main body, fixture block and protection slide block；Described protection slide bar and fixture block and protection slide block match, and described spring three, spring four and spring five are arranged on protection slide block, and spring three and spring four control the side-to-side movement of protection slide block, and spring five controls seesawing of protection slide block；Being additionally provided with spring one and spring two, described spring one is between protection slide bar and bonnet, and spring two is between fixture block and bonnet, and spring one controls the up and down motion of knife bar assembly, and spring two controls the up and down motion of fixture block.So that the present invention not only reasonable in design, simple, and can accomplish when operation uses: 1. original state and when preparing to puncture, cutter head is in cutter window；When 2. puncturing, blade exposes work；3. after puncturing broken stomach wall, the protection protected slide block of slide bar is spacing up and down, and when front end is again by external force, without again exposing piercing blade, blade is in guard mode；When 4. puncturing end, whole mechanism recovers to original state again.The present invention really serves protective effect, safe and reliable.
Protection slide bar of the present invention includes the body of rod, circumference positive stop lug boss, upper and lower positive stop lug boss, slide anteroposterior boss and spring eye; be respectively fixed with circumference positive stop lug boss, upper and lower positive stop lug boss and slide anteroposterior boss on the top of the body of rod, spring eye is opened in the top of the body of rod；Described slide anteroposterior boss is adjacent with upper and lower positive stop lug boss, and the outer surface of slide anteroposterior boss is vertical with the horizontal center line of spring eye.Protection slide bar can be matched with fixture block and protection slide block better, complete whole puncturing operation safely and reliably.
Protection slide block of the present invention is respectively fixed with spring base three, spring base four and spring base five; and have sliding tray one, sliding tray two and stopper slot on protection slide block; described spring base three, spring base four and spring base five are respectively mounted spring three, spring four and spring five; sliding tray one makes protection slide block horizontally slip; sliding tray two makes protection slide block slide anteroposterior, and the up and down motion of protection slide bar is carried out spacing by stopper slot.Protection slide block can be matched with fixture block and protection slide bar better, complete whole puncturing operation safely and reliably.
Body of rod bottom of the present invention has hole clipping, this hole clipping and cutter window clamping；Make the body of rod more convenient with the connection of cutter window.
The circular-rotation of circumference positive stop lug boss of the present invention restriction protection slide bar, the up and down motion of upper and lower positive stop lug boss restriction protection slide bar, slide anteroposterior boss makes protection slide block slide anteroposterior, installs spring one in spring eye.
Card block that fixture block of the present invention includes being fixed together, spring lead, fixture block horizontally slip boss and fixture block lead; described spring lead and fixture block lead are positioned at the two ends of card block; horizontally slip boss and card block of fixture block is fixed, and the fixture block boss that horizontally slips makes protection slide block horizontally slip.Fixture block can be matched with protection slide block and protection slide bar better, complete whole puncturing operation safely and reliably.
Spring lead of the present invention is cylindrical, and it places spring two, and fixture block lead is tetragon, and card block is one have the cylinder of place's one-tenth plane at circumferencial direction, and the described fixture block boss that horizontally slips is fixed in the plane of this card block；The structural design making fixture block is more reasonable.
Knife bar assembly of the present invention is independently installed with protection knife bar mechanism, and last and bonnet, spring one and spring two assemble, and connecting portion is clamping.Make easier for installation simply, production efficiency is higher.
The present invention is compared with prior art; have the following advantages and effect: structural design is more reasonable; owing to being provided with protection slide bar, fixture block, protection slide block, spring one, spring two, spring three, spring four and spring five; in puncture needle use procedure; after puncturing broken stomach wall; the protection protected slide block of slide bar is spacing up and down; when front end is again by external force; without again exposing piercing blade; blade is in guard mode; ensure that patient will not be subject to unexpected injury because of puncture, use safe and reliable and convenient.
Accompanying drawing explanation
Fig. 1 is the overall structure front view (section view) of the present invention.
Fig. 2 is the structural representation top view of Fig. 1.
Fig. 3 is the structural representation sectional view of A-A in Fig. 2.
Fig. 4 is the structural representation front view (section view) of knife bar assembly in the present invention.
Fig. 5 is the structural representation side view of Fig. 4.
Fig. 6 is the structural representation front view (section view) protecting knife bar mechanism in the present invention.
Fig. 7 is the structural representation sectional view of the C-C of Fig. 6.
Fig. 8 is the structural representation top view of Fig. 6.
Fig. 9 is the D-D structural representation sectional view of Fig. 8.
Figure 10 is the B-B structural representation sectional view of Fig. 8.
Figure 11 is the structural representation front view protecting slide bar in the present invention.
Figure 12 is the structural representation top view of Figure 11.
Figure 13 is the structural representation right view of Figure 11.
Figure 14 is the structural representation axonometric chart that the present invention protects slide bar.
Figure 15 is the first perspective view protecting slide block in the present invention.
Figure 16 is the second perspective view protecting slide block in the present invention.
Figure 17 is the 3rd perspective view protecting slide block in the present invention.
Figure 18 is the structural representation front view of the direction of arrow in Figure 15.
Figure 19 is the structural representation upward view of the direction of arrow in Figure 15.
Figure 20 is the structural representation top view of the direction of arrow in Figure 15.
Figure 21 is the structural representation front view of fixture block in the present invention.
Figure 22 is the structural representation top view of Figure 21.
Figure 23 is the structural representation axonometric chart of fixture block in the present invention.
Figure 24 is one of them position view protecting slide bar, protection slide block and fixture block to match in the present invention.
Detailed description of the invention
Referring to Fig. 1-Fig. 5; the present invention is mainly made up of knife bar assembly 1, protection knife bar mechanism 2, bonnet 3, spring 1 and spring 25; bonnet 3 snaps connection with knife bar assembly 1 and protection knife bar mechanism 2 respectively; spring 1 and spring 25 are between protection knife bar mechanism 2 and bonnet 3; knife bar assembly 1 is independently installed with protection knife bar mechanism 2; last and bonnet 3, spring 1 and spring 25 assemble, and connecting portion is clamping.
The knife bar assembly 1 of the present invention includes blade 11, blade gland 12 and knife bar 13, and blade 11 crimps with blade gland 12, blade 11 and knife bar 13 clamping, the other end of knife bar 13 and bonnet 3 clamping；During installation, blade 11 snaps on knife bar 13, then covers blade gland 12.
Referring to Fig. 1, Fig. 6-Figure 24, the protection knife bar mechanism 2 of the present invention includes cutter window 21, protection slide bar 22, needle guard main body 23, fixture block 24, protection slide block 25, spring 36, spring 47 and spring 58；The front portion of protection slide bar 22 is socketed with cutter window 21 clamping, rear portion and needle guard main body 23, and fixture block 24 and protection slide block 25 are positioned at the two ends of needle guard main body 23 and fixture block 24 and stretch out needle guard main body 23；Protection slide bar 22 and fixture block 24 match with protection slide block 25, and spring 36, spring 47 and spring 58 are arranged on protection slide block 25, and spring 36 and spring 47 control the side-to-side movement of protection slide block 25, and spring 58 controls seesawing of protection slide block 25.
Specifically, spring 1 is between protection slide bar 22 and bonnet 3, and spring 25 is between fixture block 24 and bonnet 3, and spring 1 controls the up and down motion of knife bar assembly 1, and spring 25 controls the up and down motion of fixture block 24.
The protection slide bar 22 of the present invention includes the body of rod 221, circumference positive stop lug boss 224, upper and lower positive stop lug boss 223, slide anteroposterior boss 222 and spring eye 225; be respectively fixed with circumference positive stop lug boss 224, upper and lower positive stop lug boss 223 and slide anteroposterior boss 222 on the top of the body of rod 221, spring eye 225 is opened in the top of the body of rod 221；Slide anteroposterior boss 222 is adjacent with upper and lower positive stop lug boss 223, and the outer surface 2221 of slide anteroposterior boss 222 is vertical with the horizontal center line 2251 of spring eye 225；The body of rod 221 bottom has hole clipping 226, this hole clipping 226 and cutter window 21 clamping；Wherein: the circular-rotation of circumference positive stop lug boss 224 restriction protection slide bar 22, the up and down motion of upper and lower positive stop lug boss 223 restriction protection slide bar 22, slide anteroposterior boss 222 makes protection slide block 25 slide anteroposterior, installs spring 1 in spring eye 225.
The protection slide block 25 of the present invention is respectively fixed with spring base 3 252, spring base 4 253 and spring base 5 251; and have sliding tray 1, sliding tray 2 256 and stopper slot 255 on protection slide block 25; spring base 3 252 therein, spring base 4 253 and spring base 5 251 are respectively mounted spring 36, spring 47 and spring 58; sliding tray 1 makes protection slide block 25 horizontally slip; sliding tray 2 256 makes protection slide block 25 slide anteroposterior, and the up and down motion of protection slide bar 22 is carried out spacing by stopper slot 255；The centrage 2521 of spring base 3 252 is parallel with the centrage 2531 of spring base 4 253, and the centrage 2511 of spring base 5 251 is vertical with the centrage 2531 of the centrage 2521 of spring base 3 252 and spring base 4 253.
Card block 241 that the fixture block 24 of the present invention includes being fixed together, spring lead 242, fixture block horizontally slip boss 244 and fixture block lead 243; spring lead 242 and fixture block lead 243 are positioned at the two ends of card block 241; horizontally slip boss 244 of fixture block is fixed with card block 241, and the fixture block boss 244 that horizontally slips makes protection slide block 25 horizontally slip；In the present embodiment, spring lead 242 is cylindrical, and fixture block lead 243 be tetragon, and card block 241 is one have the cylinder of place's one-tenth plane 2411 at circumferencial direction, and the fixture block boss 244 that horizontally slips is fixed in the plane 2411 of this card block 241；Placing spring 25 on spring lead 242, fixture block lead 243 makes fixture block 24 move up and down along fixture block lead 243.
Whole protection knife bar mechanism 2 is made of plastic.
Referring to Fig. 1-Figure 24, operation principle and the service condition thereof of the present invention are as follows:
(see figure 7) during original state, protection slide bar 22 protected slide block 25 is spacing, it is impossible to moving upward, blade 11 is in cutter window 21.
(see figure 9) when preparing to puncture, fixture block 24 pressurized moves upward, and inclined-plane and the sliding tray 1 of fixture block 24 and protection slide block 25 interact, and protection slide block 25 is by the restriction of bonnet 3, it is impossible to move in vertical direction, can only level to left movement；Protection slide bar 22 departs from the spacing of protection slide block 25, can move upward.Now, spring 25, spring 36, spring 47 are in impaction state.
(see figure 10) during puncture, protection slide bar 22 moves upward, and top is to protection slide block 25 place, and protection slide block 25 travels forward, and blade 11 exposes work, and now spring 1, spring 58 are in impaction state.
After puncturing broken stomach wall, protection slide bar 22, under the elastic force effect of spring 1, moves downward；Protection slide block 25 spring 36, spring 47 elastic force effect under move right；Protection slide block 25 is under the effect of spring 58, and rearward movement, until spacing end face 258 is encountered fixture block 24 and stopped.Now, protection slide block 25 blocks protection slide bar 22 again, makes protection slide bar 22 not move upward, and blade 11 is in guard mode.
When puncturing end, fixture block 24, under the effect of spring 25, moves downward；Protect slide block 25 under the effect of spring 58, rearward movement.Now, whole mechanism recovers to original state.
Part movement direction as herein described is as the criterion with Figure of description.
Above-mentioned work process makes the present invention have real protective effect.
Specific embodiment described in this specification, the title that its part takes can be different.All equivalences done according to the structure described in inventional idea of the present invention, feature and principle or simple change, be all included in the protection domain of patent of the present invention.
Claims (8)
1. a protection puncture needle, including knife bar assembly, protection knife bar mechanism and bonnet, bonnet is connected with knife bar assembly and protection knife bar mechanism respectively, and protection knife bar mechanism includes cutter window and needle guard main body, it is characterised in that:
Described protection knife bar mechanism is additionally provided with protection slide bar, fixture block, protection slide block, spring three, spring four and spring five; needle guard main body is stretched out at the two ends that the front portion of protection slide bar is positioned at needle guard main body and fixture block with cutter window clamping, rear portion and the socket of needle guard main body, fixture block and protection slide block；Described protection slide bar, protection slide block and fixture block three match, and described spring three, spring four and spring five are arranged on protection slide block, and spring three and spring four control the side-to-side movement of protection slide block, and spring five controls seesawing of protection slide block；
Being additionally provided with spring one and spring two, described spring one is between protection slide bar and bonnet, and spring two is between fixture block and bonnet, and spring one controls the up and down motion of knife bar assembly, and spring two controls the up and down motion of fixture block.
2. protection puncture needle according to claim 1; it is characterized in that: described protection slide bar includes the body of rod, circumference positive stop lug boss, upper and lower positive stop lug boss, slide anteroposterior boss and spring eye; be respectively fixed with circumference positive stop lug boss, upper and lower positive stop lug boss and slide anteroposterior boss on the top of the body of rod, spring eye is opened in the top of the body of rod；Described slide anteroposterior boss is adjacent with upper and lower positive stop lug boss, and the outer surface of slide anteroposterior boss is vertical with the horizontal center line of spring eye.
3. protection puncture needle according to claim 1; it is characterized in that: described protection slide block is respectively fixed with spring base three, spring base four and spring base five; and have sliding tray one, sliding tray two and stopper slot on protection slide block; described spring base three, spring base four and spring base five are respectively mounted spring three, spring four and spring five; sliding tray one makes protection slide block horizontally slip; sliding tray two makes protection slide block slide anteroposterior, and the up and down motion of protection slide bar is carried out spacing by stopper slot.
4. protection puncture needle according to claim 2, it is characterised in that: described body of rod bottom has hole clipping, this hole clipping and cutter window clamping.
5. protection puncture needle according to claim 2; it is characterized in that: the circular-rotation of described circumference positive stop lug boss restriction protection slide bar; the up and down motion of upper and lower positive stop lug boss restriction protection slide bar, slide anteroposterior boss makes protection slide block slide anteroposterior, installs spring one in spring eye.
6. protection puncture needle according to claim 3, it is characterised in that: the centerline parallel of described spring base three and spring base four, the central axis of the centrage of spring base five and spring base three and spring base four.
7. protection puncture needle according to claim 1; it is characterized in that: card block that described fixture block includes being fixed together, spring lead, fixture block horizontally slip boss and fixture block lead; described spring lead and fixture block lead are positioned at the two ends of card block; horizontally slip boss and card block of fixture block is fixed; this fixture block boss that horizontally slips makes protection slide block horizontally slip, and fixture block lead makes fixture block move up and down along fixture block lead.
8. protection puncture needle according to claim 7; it is characterized in that: described spring lead is cylinder; it places spring two; fixture block lead is tetragon; card block is one have a place to become the cylinder of plane at circumferencial direction, and the described fixture block boss that horizontally slips is fixed in the plane of this card block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410295748.9A CN104068922B (en) | 2014-06-27 | 2014-06-27 | Protection puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410295748.9A CN104068922B (en) | 2014-06-27 | 2014-06-27 | Protection puncture needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104068922A CN104068922A (en) | 2014-10-01 |
| CN104068922B true CN104068922B (en) | 2016-07-06 |
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ID=51590811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410295748.9A Active CN104068922B (en) | 2014-06-27 | 2014-06-27 | Protection puncture needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104068922B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106510810B (en) * | 2016-12-09 | 2023-05-26 | 成都五义医疗科技有限公司 | Button-driven automatic rotation protection puncture needle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5171245A (en) * | 1990-09-27 | 1992-12-15 | Stryker Corporation | Surgical apparatus including a spring activated locking device |
| US5318580A (en) * | 1990-09-11 | 1994-06-07 | Origin Medsystems, Inc. | Retractable trocar |
| CN2587362Y (en) * | 2002-09-23 | 2003-11-26 | 佛山特种医用导管有限责任公司 | Trocar puncture needle |
| CN204072252U (en) * | 2014-06-27 | 2015-01-07 | 浙江天松医疗器械股份有限公司 | A kind of protection puncture needle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19908721A1 (en) * | 1999-03-01 | 2000-09-28 | Storz Karl Gmbh & Co Kg | Instrument for cutting biological and especially human tissue |
| ITPD20020100A1 (en) * | 2002-04-22 | 2003-10-22 | Emmebi Srl | TROCAR FOR ENGRAVINGS WITH COVERING AND DISCOVERY MECHANISM OF THE SCALPEL |
| US20100016878A1 (en) * | 2006-12-15 | 2010-01-21 | Tyco Healthcare Group Lp | Trocar assembly with obturator and retractable stylet |
-
2014
- 2014-06-27 CN CN201410295748.9A patent/CN104068922B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5318580A (en) * | 1990-09-11 | 1994-06-07 | Origin Medsystems, Inc. | Retractable trocar |
| US5171245A (en) * | 1990-09-27 | 1992-12-15 | Stryker Corporation | Surgical apparatus including a spring activated locking device |
| CN2587362Y (en) * | 2002-09-23 | 2003-11-26 | 佛山特种医用导管有限责任公司 | Trocar puncture needle |
| CN204072252U (en) * | 2014-06-27 | 2015-01-07 | 浙江天松医疗器械股份有限公司 | A kind of protection puncture needle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104068922A (en) | 2014-10-01 |
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