CN109223123B - Injection partition type coaxial sleeve puncture needle - Google Patents
Injection partition type coaxial sleeve puncture needle Download PDFInfo
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- CN109223123B CN109223123B CN201810923895.4A CN201810923895A CN109223123B CN 109223123 B CN109223123 B CN 109223123B CN 201810923895 A CN201810923895 A CN 201810923895A CN 109223123 B CN109223123 B CN 109223123B
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- sealing gasket
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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
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
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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
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
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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
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3419—Sealing means between cannula and body
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides an injection partition formula coaxial cannula pjncture needle, its characterized in that includes pjncture needle and cylinder shell body (2), and cylinder shell body (2) are square barrel, and both ends are sealing connection respectively has upper cover plate (5) and lower apron (8) about cylinder shell body (2), and coaxial interior sleeve pipe (3) set up between upper cover plate (5) and lower apron (8), is equipped with a plurality of through-holes (30) on it. The invention provides a novel isolated coaxial puncture trocar which is isolated from the outside through injecting liquid. The invention utilizes the principle of a horizontal plane, is additionally provided with the angle measuring mark, can skillfully display the needle inserting angle in each direction, accurately provides the direction for the needle inserting of puncture, and can greatly improve the puncture accuracy.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a novel coaxial puncture trocar capable of being isolated from the outside after liquid is injected.
Background
In recent years, with the development of medical treatment toward precise medical treatment and fine treatment, obtaining tissues by needle biopsy to obtain pathological basis and gene detection result has become the most important and powerful basis for clinical treatment. In addition, direct physical therapy (such as radio frequency, microwave, argon-helium knife, radioactive particle placement, etc.) for lesions through puncture technology is also increasingly being widely used clinically. Therefore, the puncturing method and the puncturing device are important in the puncturing technique.
The puncture technique is widely used as a minimally invasive technique in the global scope. The existing puncture coaxial trocar consists of a needle tube and a needle core, wherein the needle core is penetrated into a sleeve and screwed up by threads for puncture, the sleeve is reserved after a needle point reaches a preset position, the needle core is pulled out, the sleeve is used as a channel, and corresponding instruments such as a biopsy needle, a radio frequency, microwave and argon-helium knife ablation needle, the needle tube for placing radioactive particles and the like are penetrated into the sleeve for surgical operation. And the operation can be repeatedly operated due to the channel formed by the reserved coaxial puncture needle sleeve.
In practical operation, the coaxial sleeve is directly communicated with the outside air when the needle core or other corresponding surgical instruments are pulled out of the sleeve and the clearance time is reserved between the needle core or other corresponding surgical instruments and the needle core or other corresponding surgical instruments, so that the chance that the puncture deep wound is polluted by the air to cause infection is increased; when puncturing a pleural cavity (such as puncturing close to pleural lesion or pleural lesion), the negative pressure of the pleural cavity can cause inhalation pneumothorax when the needle core is pulled out; especially, when some lesions are punctured, air embolism, a serious complication and fatal consequences can be caused by the fact that external air is sucked into veins (such as pulmonary veins) due to the internal and external pressure difference.
In addition, the puncture angle direction in the transverse and longitudinal directions is also the key point for determining the puncture accuracy in the puncture process. Many experts have previously tried to this end with much effort. Therefore, the coaxial puncture needle which is safe and reliable in structure can avoid risks in puncture and greatly improve puncture accuracy, and the coaxial puncture needle becomes a major problem to be solved urgently in the field.
Disclosure of Invention
In order to solve the defects of the existing apparatus, the invention provides a novel injection liquid (such as physiological saline) and external isolated coaxial puncture trocar. In addition, the invention also utilizes the principle of a horizontal plane, is additionally provided with the angle measuring mark, can skillfully display the needle inserting angle in each direction, accurately provides the direction for the needle inserting of puncture, and can greatly improve the puncture accuracy.
In order to achieve the purpose, the invention provides the following technical scheme:
an injection partition type coaxial cannula puncture needle comprises a puncture needle and a needle cylinder outer shell (2), wherein the needle cylinder outer shell (2) is a square (or circular) cylinder body, the upper end and the lower end of the needle cylinder outer shell (2) are respectively connected with an upper cover plate (5) and a lower cover plate (8) in a sealing mode, a coaxial inner cannula (3) is arranged between the upper cover plate (5) and the lower cover plate (8), and a plurality of through holes (30) are formed in the coaxial inner cannula; the upper cover plate (5) is in threaded connection with a puncture needle introducer (4), the puncture needle introducer (4) is used for being connected with an injector, the lower cover plate (8) is in threaded connection with a puncture sleeve fixing seat (9), a sealing gasket (6) is arranged between the upper cover plate (5) and the puncture needle introducer (4), and another sealing gasket (6) is arranged between the lower cover plate (8) and the puncture sleeve fixing seat (9); the puncture needle penetrates through the puncture needle introducer (4), a sealing gasket (6), the coaxial inner sleeve (3), the other sealing gasket (6) and the puncture sleeve fixing seat (9) in sequence.
The puncture needle comprises a puncture needle core (1), a puncture needle fixing column (10) and a puncture needle knob (11); the upper end of the puncture needle core (1) is fixedly connected with a puncture needle fixing column (10), the puncture needle fixing column (10) is fixedly connected with a puncture needle knob (11), a convex knob anti-slip rib (13) is arranged on the outer wall of the puncture needle knob (11), and a knob internal thread (12) is arranged on the inner wall of the puncture needle knob (11).
The surface of the syringe outer shell (2) is provided with liquid level scales (24) and angle measurement scales (25), and the angle measurement scales (25) comprise 72 5-degree scale lines (26) arranged at intervals of 5 degrees and 360 1-degree scale lines (27) arranged at intervals of 1 degree.
The puncture needle introducer (4) is cylindrical, the outer wall of the middle part of the puncture needle introducer is provided with an upper cover plate connecting external thread (40), and the upper part of the puncture needle introducer is provided with a stylet connecting external thread (41); the lower part of the puncture needle introducer (4) is provided with a lower sealing boss (43) which is connected with the sealing gasket (6) in a sealing way, and the interior of the puncture needle introducer (4) is of an inner cone guide hole (42) structure.
The upper cover plate (5) is square, and an upper cover plate connecting pipe (50) protruding upwards is arranged on the upper cover plate (5); an upper cover plate sealing gasket fixing groove (51) for fixing the sealing gasket (6) is also arranged on the upper cover plate (5).
The sealing gasket (6) is circular, the middle part of the sealing gasket is provided with a penetrable diaphragm (60), the edge of the sealing gasket is provided with a protruding annular sealing ring (61), the penetrable diaphragm (60) and the annular sealing ring (61) are of an integrated structure and made of medical silica gel or medical rubber.
The lower cover plate (8) is square, a lower cover plate connecting pipe (80) protruding downwards is arranged on the lower cover plate (8), and a lower cover plate sealing gasket fixing groove (81) for fixing the sealing gasket (6) is further formed in the lower cover plate (8).
Puncture sleeve pipe fixing base (9) are cylindrical including interior taper hole (90), go up sealed boss (91), puncture sleeve pipe (92), stupefied (93) of antiskid and lower cover connection external screw thread (94), puncture sleeve pipe fixing base (9), its inside interior taper hole (90) that is equipped with, puncture sleeve pipe fixing base (9) lower part be equipped with interior taper hole (90), puncture sleeve pipe (92) are linked together with interior taper hole (90), puncture sleeve pipe fixing base (9) outer wall is equipped with stupefied (93) of antiskid and lower cover connection external screw thread (94), puncture sleeve pipe fixing base (9) upper portion is equipped with last sealed boss (91) with seal gasket (6) sealing connection.
Compared with the prior tip puncture needle, the puncture needle has the following beneficial effects:
firstly, a needle core passes through a liquid cavity to enter a coaxial sleeve for puncture during puncture, and after the needle core of the puncture needle is pulled out, the needle tube is automatically isolated from the outside without time gaps due to the existence of water in the outer shell of the liquid storage body of the needle cylinder; the chance of infection is reduced and particularly serious complications of air embolism and its fatal consequences due to negative pressure inhalation into veins (such as the pulmonary vein) can be prevented.
Secondly, after the puncture needle reaches the target position by using the puncture needle of the invention, the puncture needle sleeve is fixed, the puncture needle core is taken out, and the puncture needle sleeve is provided with corresponding instruments such as a biopsy needle, a radio frequency needle, a microwave needle, a radioactive particle needle tube and the like to carry out relevant operation. If the operation needs to be operated repeatedly, the puncture needle sleeve which is penetrated can be kept or the position and the direction are slightly changed, and then the operation is continued through the channel of the puncture needle sleeve, so that the damage and the risk of repeated puncture at a plurality of places are avoided, and the operation part is always isolated from the outside in the whole process;
third, in operation, if the water in the outer shell of the water storage is punctured by the needle core and the needle of the relevant surgical instrument, a small amount of liquid flows out to reduce the water, but the isolation effect is not influenced. If the liquid in the outer shell body flows out quickly and the liquid capacity is reduced quickly, the existence of the internal and external pressure difference is often indicated, the possibility of vein penetration is highly indicated, and at the moment, the upper opening of the puncture needle introducer is pressed by fingers to close and the sleeve is pulled out of a human body.
Fourthly, due to the existence of water in the water storage outer shell of the needle cylinder, the common inhalation pneumothorax caused by negative pressure can be avoided through the pleural cavity when the needle is pulled out, and the pneumothorax incidence rate of pleura lesion or puncture adjacent lesion can also be obviously reduced.
Fifth, because the angle mark is arranged on the water storage outer shell of the needle cylinder and the horizontal plane is arranged in the water storage outer shell of the needle cylinder, the angle of the needle cylinder in each direction is clearly displayed, and the needle cylinder has a vital function for determining the puncture direction and improving the puncture accuracy for an operator.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a front view of the syringe housing of the present invention.
FIG. 3 is a schematic view of the back structure of the outer housing of the syringe of the present invention.
FIG. 4 is a schematic cross-sectional view of the gasket seal of the present invention.
FIG. 5 is a schematic plan view of a gasket seal of the present invention.
In the figure: 1. a puncture needle core; 10. a puncture needle fixing column; 11. a puncture needle knob; 12. knob internal threads; 13. the knob is provided with anti-skid ribs;
2. a water storage outer shell of the needle cylinder; 24. liquid level scales; 25. measuring angle scales; 26. 5 degree scale mark; 27. 1 degree scale mark;
3. a coaxial inner sleeve; 30. a through hole;
4. a puncture needle introducer; 40. the upper cover plate is connected with an external thread; 41. the needle core is connected with an external thread; 42. an inner cone guide hole; 43. a lower sealing boss;
5. an upper cover plate; 50. an upper cover plate connecting pipe; 51. a sealing gasket fixing groove of the upper cover plate;
6. sealing gaskets; 60. the membrane can be punctured; 61. an annular seal ring;
8. a lower cover plate; 80. a lower cover plate connecting pipe; 81. a lower cover plate sealing gasket fixing groove;
9. a puncture cannula fixing seat; 90. an inner taper hole; 91. an upper sealing boss; 92. puncturing a cannula; 93. anti-skid ridges; 94. the lower cover plate is connected with an external thread.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in the figures 1 to 5 of the drawings,
an injection partition type coaxial cannula puncture needle is characterized by comprising a puncture needle and a syringe outer shell (2), wherein the syringe outer shell (2) is a square cylinder, the upper end and the lower end of the syringe outer shell (2) are respectively connected with an upper cover plate (5) and a lower cover plate (8) in a sealing manner, a coaxial inner cannula (3) is arranged between the upper cover plate (5) and the lower cover plate (8), and a plurality of through holes (30) are formed in the coaxial inner cannula; the upper cover plate (5) is in threaded connection with a puncture needle introducer (4), the puncture needle introducer (4) is used for being connected with an injector, the lower cover plate (8) is in threaded connection with a puncture sleeve fixing seat (9), a sealing gasket (6) is arranged between the upper cover plate (5) and the puncture needle introducer (4), and another sealing gasket (6) is arranged between the lower cover plate (8) and the puncture sleeve fixing seat (9); the puncture needle penetrates through the puncture needle introducer (4), a sealing gasket (6), the coaxial inner sleeve (3), the other sealing gasket (6) and the puncture sleeve fixing seat (9) in sequence.
The upper end and the lower end of the syringe shell (2) are respectively connected with an upper cover plate (5) and a lower cover plate (8) in a sealing way, and the syringe shell can be connected in a sealing way through technical means such as sealant, hot melting and the like, and can also be formed at one time through an injection mold and integrated with the upper cover plate and the lower cover plate into a whole, and the used material is transparent medical plastic.
The puncture needle comprises a puncture needle core (1), a puncture needle fixing column (10) and a puncture needle knob (11); the upper end of the puncture needle core (1) is fixedly connected with a puncture needle fixing column (10), the puncture needle fixing column (10) is fixedly connected with a puncture needle knob (11), a convex knob anti-slip rib (13) is arranged on the outer wall of the puncture needle knob (11), and a knob internal thread (12) is arranged on the inner wall of the puncture needle knob (11).
The fixed connection can be realized by technical means such as sealant, hot melting, injection molding and the like. The material is medical plastic.
The knob internal thread (12) is in threaded connection with the needle core connecting external thread (41) of the puncture needle introducer (4).
The surface of the syringe shell (2) is provided with liquid level scales (24) and angle measuring scales (25), and the angle measuring scales (25) comprise 72 long scale lines (26) of 5 degrees arranged every 5 degrees and 360 short scale lines (27) of 1 degree arranged every 1 degree.
The surface of the syringe shell (2) is provided with a liquid level scale (24) and a measuring angle scale (25), and the liquid level scale and the measuring angle scale can be realized by printing, carving or molding, laser printing and other technical means.
The puncture needle introducer (4) is cylindrical, the outer wall of the middle part of the puncture needle introducer is provided with an upper cover plate connecting external thread (40), and the upper part of the puncture needle introducer is provided with a stylet connecting external thread (41); the lower part of the puncture needle introducer (4) is provided with a lower sealing boss (43) which is connected with the sealing gasket (6) in a sealing way, and the interior of the puncture needle introducer (4) is of an inner cone guide hole (42) structure and is made of medical transparent plastics.
The upper cover plate (5) is square, an upper cover plate connecting pipe (50) protruding upwards is arranged on the upper cover plate (5), and an upper cover plate sealing gasket fixing groove (51) for fixing the sealing gasket (6) is further arranged on the upper cover plate (5).
The inner wall of the upper cover plate connecting pipe (50) is provided with an internal thread connected with the upper cover plate connecting external thread (40), and the material is medical transparent plastic.
The sealing gasket (6) is circular, the pierceable membrane (60) is arranged in the middle, the edge of the sealing gasket is provided with a protruding annular sealing ring (61), the pierceable membrane (60) and the annular sealing ring (61) are of an integrated structure, and the sealing gasket is made of medical silica gel or medical rubber.
The lower cover plate (8) is square, a lower cover plate connecting pipe (80) protruding downwards is arranged on the lower cover plate (8), and a lower cover plate sealing gasket fixing groove (81) for fixing the sealing gasket (6) is further arranged on the lower cover plate (8).
The inner wall of the lower cover plate connecting pipe (80) is provided with an internal thread connected with the lower cover plate connecting external thread (94). The material is medical transparent plastic.
Puncture sleeve pipe fixing base (9) are including interior taper hole (90), go up sealed boss (91), puncture sleeve pipe (92), stupefied (93) of antiskid and lower cover connection external screw thread (94), puncture sleeve pipe fixing base (9) are cylindrical, its inside is equipped with interior taper hole (90), puncture sleeve pipe fixing base (9) lower part be equipped with interior taper hole (90), puncture sleeve pipe (92) are linked together with interior taper hole (90), puncture sleeve pipe fixing base (9) outer wall is equipped with stupefied (93) of antiskid and lower cover connection external screw thread (94), puncture sleeve pipe fixing base (9) upper portion is equipped with last sealed boss (91) with seal gasket (6) sealing connection, the material is medical plastics.
According to the technical scheme provided by the invention, on the basis of the existing coaxial sleeve, the sleeve seat (plastic part) at the root of the coaxial sleeve is extended to form a coaxial inner sleeve, a hollow transparent square column-shaped shell is additionally arranged, and a grid-shaped, porous or other hollow-out-shaped through hole is additionally arranged on the coaxial inner sleeve at the center of the coaxial inner sleeve to ensure that the coaxial inner sleeve is communicated with the shell.
Furthermore, the four sides of the shell body are provided with volume scales and angle mark scales.
Furthermore, the upper part of the coaxial inner sleeve is connected with the upper cover plate, the center of the coaxial inner sleeve is consistent, an upper cover plate connecting pipe (50) protruding upwards is arranged on the upper cover plate, an upper cover plate sealing gasket fixing groove (51) for fixing a sealing gasket (6) is also arranged on the upper cover plate (5)
Further, the lower part of the coaxial inner sleeve is connected with the lower cover plate, and the centers of the coaxial inner sleeve and the lower cover plate are consistent; a lower cover plate sealing gasket fixing groove (81) for fixing the sealing gasket (6) and a lower cover plate connecting pipe are also arranged on the lower cover plate
A medical material soft gasket is additionally arranged in the sealing gasket fixing groove of the upper cover plate and the lower cover plate: the periphery of the sealing gasket (6) is thickened into a sealing ring in a columnar mode, and the thickening width of the sealing gasket (6) is consistent with that of the sealing gasket fixing groove. Are pressed, sealed and fixed by the puncture needle introducer and the upper and lower sealing bosses of the puncture sleeve fixing seat respectively.
Further, an upper cover plate connecting pipe (50) is connected with the puncture needle introducer by screw threads and is screwed tightly. The lower cover plate connecting pipe is connected with the puncture sleeve fixing seat (9) in a threaded manner and is screwed down.
From the above, it can be seen that the present invention provides a novel coaxial trocar for puncturing fluids isolated from the outside.
Before the puncture operation is started, a medical injector is used for pumping the physiological saline, a small hole (used as an air outlet hole) is punctured on the pierceable membrane 60 of the sealing gasket 6 through the pierceable needle introducer 4, then the needle is punctured at the other position of the pierceable membrane 60, and the physiological saline is slowly injected to reach the horizontal transverse line position 31 of the water storage outer shell of the syringe. Then the puncture needle core 1 is inserted along the puncture needle introducer 4, the first sealing gasket 6 fixed on the upper cover plate 5, the second sealing gasket 6 fixed on the coaxial inner sleeve 3 and the lower cover plate 8 are punctured through the puncture needle introducer 4 in sequence, the puncture sleeve 92 is punctured through the puncture sleeve fixing seat 9, and the knob internal thread 12 and the puncture needle introducer connecting external thread 41 are screwed and fixed for operation.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An injection partition type coaxial cannula puncture needle is characterized by comprising a puncture needle cannula and a syringe outer shell (2), wherein the syringe outer shell (2) is a square barrel, the upper end and the lower end of the syringe outer shell (2) are respectively connected with an upper cover plate (5) and a lower cover plate (8) in a sealing manner, a coaxial inner cannula (3) is arranged between the upper cover plate (5) and the lower cover plate (8), and a plurality of through holes (30) are formed in the coaxial inner cannula; the upper cover plate (5) is in threaded connection with a puncture needle introducer (4), the puncture needle introducer (4) is used for being connected with an injector, the lower cover plate (8) is in threaded connection with a puncture sleeve fixing seat (9), a sealing gasket (6) is arranged between the upper cover plate (5) and the puncture needle introducer (4), and another sealing gasket (6) is arranged between the lower cover plate (8) and the puncture sleeve fixing seat (9); the puncture needle core penetrates through the puncture needle introducer (4), a sealing gasket (6), the coaxial inner sleeve (3), the other sealing gasket (6) and the puncture sleeve fixing seat (9) in sequence.
2. The injection block coaxial cannula needle of claim 1, wherein: the puncture needle comprises a puncture needle core (1), a puncture needle fixing column (10) and a puncture needle knob (11); the upper end of the puncture needle core (1) is fixedly connected with a puncture needle fixing column (10), the puncture needle fixing column (10) is fixedly connected with a puncture needle knob (11), a convex knob anti-slip rib (13) is arranged on the outer wall of the puncture needle knob (11), and a knob internal thread (12) is arranged on the inner wall of the puncture needle knob (11).
3. The injection block coaxial cannula needle of claim 1, wherein: the surface of the syringe outer shell (2) is provided with liquid level scales (24) and angle measurement scales (25), and the angle measurement scales (25) comprise 72 5-degree scale lines (26) arranged at intervals of 5 degrees and 360 1-degree scale lines (27) arranged at intervals of 1 degree.
4. The injection block coaxial cannula needle of claim 1, wherein: the puncture needle introducer (4) is cylindrical, the outer wall of the middle part of the puncture needle introducer is provided with an upper cover plate connecting external thread (40), and the upper part of the puncture needle introducer is provided with a stylet connecting external thread (41); the lower part of the puncture needle introducer (4) is provided with a lower sealing boss (43) which is connected with the sealing gasket (6) in a sealing way, and the interior of the puncture needle introducer (4) is of an inner cone guide hole (42) structure.
5. The injection block coaxial cannula needle of claim 1, wherein: the upper cover plate (5) is square, an upper cover plate connecting pipe (50) protruding upwards is arranged on the upper cover plate (5), threads are arranged on the inner wall of the upper cover plate connecting pipe (50), and an upper cover plate sealing gasket fixing groove (51) for fixing a sealing gasket (6) is further formed in the upper cover plate (5).
6. The injection block coaxial cannula needle of claim 1, wherein: the sealing gasket (6) is circular, the penetrable diaphragm (60) is arranged at the middle part of the sealing gasket, the edge of the sealing gasket is provided with a protruding annular sealing ring (61), the penetrable diaphragm (60) and the annular sealing ring (61) are of an integrated structure and made of medical silica gel or medical rubber.
7. The injection block coaxial cannula needle of claim 1, wherein: the lower cover plate (8) is square, a lower cover plate connecting pipe (80) protruding downwards is arranged on the lower cover plate (8), and a lower cover plate sealing gasket fixing groove (81) for fixing the sealing gasket (6) is further formed in the lower cover plate (8).
8. The injection block coaxial cannula needle of claim 1, wherein: puncture sleeve pipe fixing base (9) are cylindrical including interior taper hole (90), go up sealed boss (91), puncture sleeve pipe (92), stupefied (93) of antiskid and lower cover connection external screw thread (94), puncture sleeve pipe fixing base (9), its inside interior taper hole (90) that is equipped with, puncture sleeve pipe fixing base (9) lower part be equipped with interior taper hole (90), puncture sleeve pipe (92) are linked together with interior taper hole (90), puncture sleeve pipe fixing base (9) outer wall is equipped with stupefied (93) of antiskid and lower cover connection external screw thread (94), puncture sleeve pipe fixing base (9) upper portion is equipped with last sealed boss (91) with seal gasket (6) sealing connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923895.4A CN109223123B (en) | 2018-08-14 | 2018-08-14 | Injection partition type coaxial sleeve puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923895.4A CN109223123B (en) | 2018-08-14 | 2018-08-14 | Injection partition type coaxial sleeve puncture needle |
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| CN109223123A CN109223123A (en) | 2019-01-18 |
| CN109223123B true CN109223123B (en) | 2021-12-17 |
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| CN201810923895.4A Active CN109223123B (en) | 2018-08-14 | 2018-08-14 | Injection partition type coaxial sleeve puncture needle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110478009B (en) * | 2019-09-20 | 2021-07-06 | 中南大学湘雅医院 | Cardiovascular intervention device |
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| CN203802546U (en) * | 2014-04-09 | 2014-09-03 | 徐燕 | Lumbar puncture needle |
| CN204261141U (en) * | 2014-11-13 | 2015-04-15 | 武汉境辉环保科技有限公司 | A kind of fluid-tight syringe |
| CN204581452U (en) * | 2015-04-08 | 2015-08-26 | 闫萍 | Novel marrow puncture needle |
| CN205094555U (en) * | 2015-11-12 | 2016-03-23 | 温州医科大学附属第一医院 | Formula of loosing core thyroid gland tubercle pjncture needle |
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