CN204909585U - Compatible pjncture needle of magnetic resonance - Google Patents
Compatible pjncture needle of magnetic resonance Download PDFInfo
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- CN204909585U CN204909585U CN201520525248.XU CN201520525248U CN204909585U CN 204909585 U CN204909585 U CN 204909585U CN 201520525248 U CN201520525248 U CN 201520525248U CN 204909585 U CN204909585 U CN 204909585U
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- trocar sheath
- afterbody
- interior pin
- magnetic resonance
- handle
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Abstract
The utility model provides a compatible pjncture needle of magnetic resonance, includes handle, interior needle and outer tube, interior needle embedding outer tube to out sheathed tube afterbody is worn to the afterbody of interior needle, the afterbody of interior needle is the tip structure. In the carrier roller device, the afterbody of interior needle is the tip structure, conveniently gets into lesion tissues.
Description
Technical field
This utility model relates to the technical field of medical apparatus and instruments, and particularly a kind of magnetic resonance compatible puncture needle, is generally used for lung puncture.
Background technology
Puncture needle is the most basic intervention apparatus, can be used for directly penetrating in tumor or blister cavities aspirate, rinse, drain, biopsy or the Clinics and Practices such as to melt; Also can be used for the tissue such as passage or cranium brain, bile duct, urinary tract, stomach, dense chamber and blister cavities opening skin and blood vessel, then introduce seal wire, conduit, drainage tube etc. and treat.Tradition puncture needle is widely used in medical domain, but applies limited in magnetic resonance guiding gets involved.Magnetic resonance guiding intervention refers to affect based on diagnostics, under the guiding of magnetic resonance equipment, utilize Percutaneous Techniques and microcatheter technology etc., some diseases to be treated or in order to obtain histology, bacteriology, physiology and chemistry material, with clear and definite lesion nature.This technology has without the feature such as ionizing radiation, Wicresoft, treatment be accurate, is one of clinical medical latest development.Conventional puncture needle is many to be made up of ferromagnetic material, can fly to magnetic field center or produce and rotate, affect operation technique, even jeopardize patient vitals.When being used for the tissue penetration such as pulmonary when puncture needle, lung tissue is very soft, but the pathological tissues of pulmonary is generally tougher, and common puncture needle is not easy to enter in pathological tissues.This is the difference of prior art.
Utility model content
Technical problem to be solved in the utility model, is exactly for the deficiency existing for prior art, and provides a kind of magnetic resonance compatible puncture needle, conveniently can enter pathological tissues.
This programme is achieved by the following technical measures: a kind of magnetic resonance compatible puncture needle, comprises handle, interior pin and trocar sheath, and described interior pin embeds trocar sheath, and the afterbody of interior pin passes the afterbody of trocar sheath, and the afterbody of described interior pin is prong structure.During puncture, described interior pin is relative with between trocar sheath fixing, does not slide, after having punctured, is extracted by interior pin.
The technical characteristic of this programme also comprises: above-mentioned trocar sheath is the trocar sheath be made up of pure tantalum, described interior pin be made up of titanium alloy in pin.Adopt the technical program, trocar sheath is pure tantalum, its purity is high, and the content of ferrum is also very low, interior pin is titanium alloy, and pure tantalum and titanium alloy material are in magnetic resonance environment, and stressed, heating, artifact degree is all very little, be conducive to judging magnetic resonance puncture needle tip position, increase the probability of success of intervene operation.
The technical characteristic of this programme also comprises: the afterbody of above-mentioned trocar sheath is flush configuration.That is, the afterbody 2.1 of trocar sheath is provided with concordant end face, adopts the technical program, can increase the width of puncture channel.
The technical characteristic of this programme also comprises: the afterbody of above-mentioned interior pin is that one group of lozenge is around the prong structure formed; Or the afterbody of described interior pin is the prong structure of polygonal pyramid shape.Adopt the technical program, the afterbody of described interior pin is very sharp, conveniently enters tougher pathological tissues.
The technical characteristic of this programme also comprises: the length that the afterbody of above-mentioned interior pin passes the afterbody of trocar sheath is a, described a >=3mm.Adopt the technical program, the afterbody of described interior pin passes the afterbody at least 3mm of trocar sheath, to ensure smooth inserting needle.
To the further restriction of a length, preferably, described a is 3mm ~ 7mm.
The technical characteristic of this programme also comprises: above-mentioned handle comprise to be fixedly connected with interior pin in pin handle, and the trocar sheath handle be fixedly connected with trocar sheath, described interior pin handle is dismountable being fixedly connected with trocar sheath handle.
The further restriction of internal pin handle and trocar sheath handle, above-mentioned interior pin handle is provided with connecting hole, and the inwall of described connecting hole is provided with connecting thread, and the outer wall of described trocar sheath handle one end is provided with connecting thread.
The technical characteristic of this programme also comprises: above-mentioned interior pin handle and trocar sheath handle form a cavity volume.Adopt the technical program, described interior pin handle and trocar sheath handle form a cavity volume, are convenient to drain over the course for the treatment of or injectable drug use.
The technical characteristic of this programme also comprises: the length of above-mentioned trocar sheath is 10cm or 15cm or 18cm or 20cm.
The technical characteristic of this programme also comprises: above-mentioned handle is the handle be made up of plastic material.Adopt the technical program, described handle adopts plastic material, and plastic material is without magnetic on the one hand, on the other hand, light, facilitates inserting needle.
The technical characteristic of this programme also comprises: the diameter of above-mentioned interior pin accounts for the 94%-97% of trocar sheath internal diameter size.
The technical characteristic of this programme also comprises: above-mentioned trocar sheath is provided with calibration loop, and described calibration loop comprises one division ring and double scale ring.With the afterbody of trocar sheath for benchmark, beat one division ring every 10mm, beat double scale ring every 50mm, one division ring width is 0.5mm, and double scale ring is made up of two one division rings at a distance of 0.5mm; Calibration loop is set and can sees inserting needle situation in any angle, and judge the degree of depth of magnetic resonance puncture needle and the tip position of puncture needle more accurately, conveniently calculate depth of needle.
The beneficial effects of the utility model can be learnt from above-mentioned technical scheme: a kind of magnetic resonance compatible puncture needle, comprise handle, interior pin and trocar sheath, described interior pin embeds trocar sheath, and the afterbody of interior pin passes the afterbody of trocar sheath, and the afterbody of described interior pin is prong structure.In this utility model, the afterbody of described interior pin is prong structure, conveniently enters pathological tissues.
As can be seen here, this utility model compared with prior art, has substantive distinguishing features and progress, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the partial schematic diagram of trocar sheath.
In figure: pin in 1-, the afterbody of pin in 1.1-, 2-trocar sheath, the afterbody of 2.2-trocar sheath, pin handle in 3-, 4-trocar sheath handle, 5-one division ring, 6-double scale ring, 7-cavity volume.
Detailed description of the invention
For the technical characterstic of this programme can be clearly demonstrated, below by detailed description of the invention, and in conjunction with its accompanying drawing, this programme is set forth.
As depicted in figs. 1 and 2, a kind of magnetic resonance compatible puncture needle, comprise handle, interior pin 1 and trocar sheath 2, described interior pin 1 embeds trocar sheath 2, and the afterbody 1.1 of interior pin passes the afterbody 2.1 of trocar sheath, 2.1, the tail of described trocar sheath is a flush configuration, and the afterbody 1.1 of described interior pin is the prong structure that three faces are rhombus.The afterbody 2.1 of described trocar sheath is a flush configuration, that is, the afterbody 2.1 of trocar sheath is provided with concordant end face, the afterbody 1.1 of described interior pin is that three lozenges are around the prong structure formed, the afterbody of interior pin is made up of three lozenges, is the needle point of interior pin 1 in a vertex set of described three lozenges.In addition, the afterbody 1.1 of described interior pin also can be the prong structure of polygonal pyramid shape, and during puncture, described interior pin 1 is relative fixing with between trocar sheath 2, does not slide, after having punctured, is extracted by interior pin 1.
Described trocar sheath 2 is pure tantalum, and described interior pin 1 is titanium alloy.Trocar sheath 2 is pure tantalum, and its purity is high, and the content of ferrum is also very low, interior pin 1 is titanium alloy, and pure tantalum and titanium alloy material are in magnetic resonance environment, and stressed, heating, artifact degree is all very little, be conducive to judging magnetic resonance puncture needle tip position, increase the probability of success of intervene operation.
The length that the afterbody 1.1 of described interior pin passes the afterbody 2.1 of trocar sheath is a, and described a >=3mm, to ensure smooth inserting needle, a is preferably 3mm ~ 7mm, and in the present embodiment, described a is 3.5mm.
Described interior pin 1 can pass through trocar sheath 2 internal diameter smoothly, and both gaps are minimum, and different material friction power is different, and the diameter of interior pin 2 accounts for the 94%-97% of trocar sheath 2 internal diameter.
Described handle comprise to be fixedly connected with interior pin 1 in pin handle 3, and the trocar sheath handle 4 be fixedly connected with trocar sheath 2, described interior pin handle 3 is fixedly connected with for dismountable with trocar sheath handle 4.
Described interior pin handle 3 and trocar sheath handle 4 form a cavity volume 7.
Described interior pin handle 3 is provided with connecting hole, and the inwall of described connecting hole is provided with connecting thread, and the outer wall of described trocar sheath handle 4 one end is provided with connecting thread.
The length of described trocar sheath 2 is 10cm or 15cm or 18cm or 20cm.
Described trocar sheath 2 is gluing with trocar sheath handle 4.
Described interior pin handle 3 and trocar sheath handle 4 are plastic material, and plastic material is without magnetic on the one hand, on the other hand, light, facilitates inserting needle.
Described trocar sheath 2 is provided with calibration loop, and described calibration loop comprises one division ring 5 and double scale ring 6.With the afterbody 2.1 of trocar sheath for benchmark, beat one division ring 5 every 10mm, beat double scale ring 6 every 50mm, one division ring 5 width is 0.5mm, and double scale ring 6 is made up of two one division rings at a distance of 0.5mm; Calibration loop is set and can sees inserting needle situation in any angle, and judge the degree of depth of magnetic resonance puncture needle and the tip position of puncture needle more accurately, conveniently calculate depth of needle.
Can pass through without the technical characteristic described in this utility model or adopt existing techniques in realizing; do not repeat them here; certainly; above-mentioned explanation is not to restriction of the present utility model; this utility model is also not limited in above-mentioned embodiment; the change that those of ordinary skill in the art makes in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (11)
1. a magnetic resonance compatible puncture needle, comprise handle, interior pin and trocar sheath, it is characterized in that: described interior pin embeds trocar sheath, and the afterbody of interior pin passes the afterbody of trocar sheath, the afterbody of described interior pin is prong structure, described trocar sheath is the trocar sheath be made up of pure tantalum, described interior pin be made up of titanium alloy in pin.
2. magnetic resonance compatible puncture needle according to claim 1, is characterized in that: the afterbody of described trocar sheath is flush configuration.
3. magnetic resonance compatible puncture needle according to claim 1, is characterized in that: the afterbody of described interior pin is that one group of lozenge is around the prong structure formed; Or the afterbody of described interior pin is the prong structure of polygonal pyramid shape.
4. magnetic resonance compatible puncture needle according to claim 1, is characterized in that: the length that the afterbody of described interior pin passes the afterbody of trocar sheath is a, described a >=3mm.
5. magnetic resonance compatible puncture needle according to claim 4, is characterized in that: the length a that the afterbody of described interior pin passes the afterbody of trocar sheath is 3mm ~ 7mm.
6. magnetic resonance compatible puncture needle according to claim 2, it is characterized in that: described handle comprise to be fixedly connected with interior pin in pin handle, and the trocar sheath handle to be fixedly connected with trocar sheath, described interior pin handle is dismountable being fixedly connected with trocar sheath handle.
7. magnetic resonance compatible puncture needle according to claim 6, is characterized in that: described interior pin handle is provided with connecting hole, and the inwall of described connecting hole is provided with connecting thread, and the outer wall of described trocar sheath handle one end is provided with connecting thread.
8. the magnetic resonance compatible puncture needle according to claim 6 or 7, is characterized in that: described interior pin handle and trocar sheath handle form a cavity volume.
9. magnetic resonance compatible puncture needle according to claim 1, is characterized in that: the length of described trocar sheath is 10cm or 15cm or 18cm or 20cm.
10. magnetic resonance compatible puncture needle according to claim 1, is characterized in that: the diameter of described interior pin accounts for the 94%-97% of trocar sheath internal diameter size.
11. magnetic resonance compatible puncture needles according to claim 1, is characterized in that: described trocar sheath is provided with calibration loop, and described calibration loop comprises one division ring and double scale ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520525248.XU CN204909585U (en) | 2015-07-20 | 2015-07-20 | Compatible pjncture needle of magnetic resonance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520525248.XU CN204909585U (en) | 2015-07-20 | 2015-07-20 | Compatible pjncture needle of magnetic resonance |
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| CN204909585U true CN204909585U (en) | 2015-12-30 |
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| CN201520525248.XU Active CN204909585U (en) | 2015-07-20 | 2015-07-20 | Compatible pjncture needle of magnetic resonance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691548A (en) * | 2015-07-20 | 2017-05-24 | 李成利 | Magnetic resonance compatibility puncture needle |
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2015
- 2015-07-20 CN CN201520525248.XU patent/CN204909585U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691548A (en) * | 2015-07-20 | 2017-05-24 | 李成利 | Magnetic resonance compatibility puncture needle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |