CN102499738B - Passive homing type articulated puncture needle - Google Patents
Passive homing type articulated puncture needle Download PDFInfo
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- CN102499738B CN102499738B CN2011103650370A CN201110365037A CN102499738B CN 102499738 B CN102499738 B CN 102499738B CN 2011103650370 A CN2011103650370 A CN 2011103650370A CN 201110365037 A CN201110365037 A CN 201110365037A CN 102499738 B CN102499738 B CN 102499738B
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- needle
- puncture
- cephalomere
- head section
- puncture needle
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Abstract
The invention relates to a passive homing type articulated puncture needle, which comprises a head section and needle sections. A wedged tip is formed at the front end of the head section, the needle sections are coaxially mounted at the back of the head section, the head section and the needle sections are made of stainless steel materials, the head section and the needle sections coaxially mounted at the back of the head section are connected by a flexible articulation, and the needle sections are also connected coaxially by flexible articulations. The flexible articulations are coils made of cobalt-chromium alloy by laser melting, two ends of each flexible articulation made of cobalt-chromium alloy are coaxially fixedly mounted with the needle sections and the head section in a jointing manner, the head section and the needle section can be bent, but flexibility of the head section and the needle sections is smaller than that of the flexible articulations. The passive homing type articulated puncture needle is capable of realizing accurately homing and controlling puncture path and position of the puncture needle when the puncture needle is used for non-straight puncture in the human body to reach the focus where the other types of puncture needles are hard to reach, so that the applicable range of minimally invasive surgery is expanded, Iatrogenic injury is reduced and patients are benefited.
Description
Technical field
The invention belongs to medical instruments field, relate to puncture needle, especially a kind of passive homing formula joint type puncture needle.
Background technology
clinically, use different puncture needles for different micro-wound surgical operations, as myeloid biopsy needle, lumbar puncture needle, the INTERV puncture biopsy needle, the Chiba pin, the kidney puncture needle, liver biopsy puncture needle, eight smooth percutaneous needles, anesthesia spinal needle, deep vein puncture needle, hematoma is pulverized puncture needle, the Stimuplex puncture needle, the intraperitoneal drainage puncture needle, the biliary drainage puncture needle, INRAD cyst aspiration needle, thoracentesis needle, breastbone ilium puncture needle, brain puncture needle, the bladder stoma puncture needle, antrum puncture needle, the DCHNS puncture needle, ultrasonic visible pin etc., they are all straight basically.When implementing to use the micro-wound surgical operation of puncture needle, for fear of iatrogenic injury, pin thrust process in to avoid intracranial critical function district, area vasculosa, avoid vitals and the structures such as trunk in the breast abdomen, intestinal tube, gallbladder and spleen, prevent damaging surrounding tissue, avoid rib, vertebra and important blood vessels, neural stop, pass through as few as possible lung tissue etc.Yet when some focus was surrounded by in-vivo tissues such as bone, intestinal, pancreas, bladder and blood vessel, existing staight needle can not enter diseased region via skin penetrating, and perhaps puncture can cause larger iatrogenic injury.
At present, arrive the health depths for getting around bone, blood vessel, plexus nervorum and important organ etc., carry out the tasks such as excision, injection, stimulation or cultivation, need flexible puncture needle, and it is carried out control and navigation.The research of this aspect still is in the junior stage in the world, the domestic blank that still belongs to.
By retrieval, following two pieces of basic relevant publication documents have been found: 1, a kind of magnetic resonance puncture needle (CN101773404A), comprise outer pin and interior pin, described interior pin embeds described outer pin, above-mentioned magnetic resonance puncture needle outer casing needle adopts pure titanium material, interior nook closing member adopts titanium alloy material, has cut down the pseudo-shadow size of puncture needle under nuclear magnetic resonance, is convenient to preferably the puncture needle position is judged.2, a kind of Special magnetic resonance venipuncture needle (CN201643192U), be provided with needle body, one end of needle body is the sharp-pointed syringe needle of ramp type, the other end of needle body is connected with needle handle, the needle handle rear end is provided with the connection tube that is connected with tube for transfusion, it is characterized in that being provided with at least two infusion holes on the tube wall of needle body, needle handle is provided with location-plate, during use, the hand-held needle handle of medical personnel thrusts syringe needle in patient's vein, then position needle handle fixing with adhesive plaster by location-plate, the location good fixing effect, effectively prevented the vibration of syringe needle, prevented the phenomenon of the blocked or injured blood vessel of syringe needle.
Above-mentioned two pieces of patent documentations, with present patent application on purpose and technical scheme on have more different.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, a kind of passive homing formula joint type puncture needle be provided, when realizing that puncture needle carries out the puncture of non-straight channel in human body to precision navigation and the control of its puncture path and puncture position.
For achieving the above object, the technical scheme taked of the present invention is:
A kind of passive homing formula joint type puncture needle, comprise cephalomere, pin knot, the front end of cephalomere is shaped with the oblique point of wedge shape, pin knot is coaxial is arranged on the cephalomere rear portion, it is characterized in that: described cephalomere and pin knot are made by stainless steel material, described cephalomere adopts flexible joint to be connected with the coaxial mounted pin knot in back, also adopts the coaxial connection of flexible joint between pin knot; Described flexible joint adopts to be melted through laser by cochrome carves the coil that forms, the two ends of the flexible joint that this cochrome is made adopt the setting-in mode with pin knot and cephalomere is coaxial is fixedly mounted with, cephalomere and pin knot are all flexible, but the degree of flexibility of cephalomere and pin knot is all less than flexible joint.
And the coil of described flexible joint adopts cochrome to melt to carve through laser and forms.
And described puncture needle is crooked at three-dimensional, and all there is the bendable angle of a maximum in each flexible joint, and its maximum angle of bend is 60 degree.
Advantage of the present invention and good effect are:
1, the human body depths can be accurately thrust in the present invention under the guiding of image technology etc., avoid simultaneously important blood vessels, internal organs, skeleton, nerve and tissue etc. in body, make the doctor can implement to save the micro-wound surgical operation of ten million bar life, and reduce and even avoid iatrogenic injury.
2, passive homing formula joint type puncture needle proposed by the invention; can realize when puncture needle carries out the puncture of non-straight channel in human body precision navigation and control to its puncture path and puncture position; reach the unapproachable focus of other type puncture needle; to enlarge the scope of application of micro-wound surgical operation; reduce iatrogenic injury, benefit the patient.
Description of drawings
Fig. 1 is structural front view of the present invention;
Fig. 2 is the longitudinal cross-section cutaway view of Fig. 1;
Fig. 3 is case of bending figure of the present invention;
Fig. 4 is the deflection schematic diagram of puncture needle of the present invention under the passive homing state.
The specific embodiment
Below in conjunction with embodiment, the present invention is further described, and following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.
A kind of passive homing formula joint type puncture needle comprises cephalomere 1, pin knot 3, and the front end of cephalomere is shaped with the oblique point of wedge shape, can be so that pin produce lateral guidance power changing the direction of joint type pin in when puncture, and pin knot is coaxial is arranged on the cephalomere rear portion.
Innovative point of the present invention is:
Described cephalomere and pin knot are made by stainless steel material.
Described cephalomere adopts flexible joint 2 to be connected with the coaxial mounted pin knot in back, also adopts the coaxial connection of flexible joint between pin knot.
Described flexible joint adopts to be melted through laser by cochrome carves the coil that forms, and this cochrome compliance is splendid, and barrel is thinner than other metal material when having good radial support power, and dilatancy is reliable; The two ends of the flexible joint that this cochrome is made adopt the setting-in mode with pin knot and cephalomere is coaxial is fixedly mounted with, and cephalomere and pin knot can bendings, but their degree of flexibility is all less than flexible joint.
This puncture needle can be crooked at three-dimensional, can realize the puncture path of curve when processing complicated puncture task, and all there is the bendable angle of a maximum in each joint, and the angle of bend of the present embodiment maximum is 60 degree.
Operation principle of the present invention is:
The cephalomere of puncture needle is with oblique point, and its unsymmetry makes passive homing formula joint type puncture needle be subject to asymmetric tissue reaction F in piercing process, and this counteracting force F makes cephalomere that passive deflection occur.By making pin can control the yawing moment of cephalomere around the rotation of its axis, and the deflection along with the deflection of cephalomere of other pin knot, as shown in Figure 4, thereby realize navigation to puncture needle.Due to the needs of navigation, cephalomere should be short as far as possible.Comprise that each pin knot of cephalomere by the stainless steel material manufacturing, is the joint between two pin knots.The joint is made by flexible material, can be crooked at three-dimensional, can realize the puncture path of curve when processing complicated puncture task, and all there is the bendable angle of a maximum in each joint.
Claims (2)
1. passive homing formula joint type puncture needle, comprise cephalomere, pin knot, the front end of cephalomere is shaped with the oblique point of wedge shape, pin knot is coaxial is arranged on the cephalomere rear portion, it is characterized in that: described cephalomere and pin knot are made by stainless steel material, described cephalomere adopts flexible joint to be connected with the coaxial mounted pin knot in back, also adopts the coaxial connection of flexible joint between pin knot; Described flexible joint is coil, and the two ends of this flexible joint adopt the setting-in mode with pin knot and cephalomere is coaxial is fixedly mounted with, and cephalomere and pin knot are all flexible, but the degree of flexibility of cephalomere and pin knot is all less than flexible joint;
Described puncture needle is crooked at three-dimensional, and all there is the bendable angle of a maximum in each flexible joint, and its maximum angle of bend is 60 degree.
2. passive homing formula joint type puncture needle according to claim 1 is characterized in that: the coil of described flexible joint adopts cochrome to melt to carve through laser and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103650370A CN102499738B (en) | 2011-11-17 | 2011-11-17 | Passive homing type articulated puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103650370A CN102499738B (en) | 2011-11-17 | 2011-11-17 | Passive homing type articulated puncture needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102499738A CN102499738A (en) | 2012-06-20 |
| CN102499738B true CN102499738B (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103650370A Expired - Fee Related CN102499738B (en) | 2011-11-17 | 2011-11-17 | Passive homing type articulated puncture needle |
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| Country | Link |
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| CN (1) | CN102499738B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104244798B (en) * | 2012-07-26 | 2016-12-21 | 奥林巴斯株式会社 | Process utensil and insert auxiliary implement |
| CN104740717B (en) * | 2015-03-27 | 2017-06-30 | 青岛市中心医院 | Telescopic shape change syringe needle |
| CN112426224B (en) * | 2020-10-20 | 2022-01-28 | 郑州郅隆智能科技有限公司 | Millimeter-scale ultra-freedom-degree accurate intelligent minimally invasive equipment and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101472528A (en) * | 2006-06-22 | 2009-07-01 | 霍夫曼-拉罗奇有限公司 | Flexible device for introducing a medical apparatus into the body |
| CN201631340U (en) * | 2010-05-19 | 2010-11-17 | 董涛 | Disposable deep cyst puncture needle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007125494A1 (en) * | 2006-05-03 | 2007-11-08 | Philips Intellectual Property & Standards Gmbh | Surgical needle and method of guiding a surgical needle |
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2011
- 2011-11-17 CN CN2011103650370A patent/CN102499738B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101472528A (en) * | 2006-06-22 | 2009-07-01 | 霍夫曼-拉罗奇有限公司 | Flexible device for introducing a medical apparatus into the body |
| CN201631340U (en) * | 2010-05-19 | 2010-11-17 | 董涛 | Disposable deep cyst puncture needle |
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| Publication number | Publication date |
|---|---|
| CN102499738A (en) | 2012-06-20 |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20131117 |