CN209789894U - Negative pressure suction device for puncture biopsy - Google Patents
Negative pressure suction device for puncture biopsy Download PDFInfo
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- CN209789894U CN209789894U CN201821653433.7U CN201821653433U CN209789894U CN 209789894 U CN209789894 U CN 209789894U CN 201821653433 U CN201821653433 U CN 201821653433U CN 209789894 U CN209789894 U CN 209789894U
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Abstract
a negative pressure suction device for puncture biopsy comprises a tube body, a hollow puncture needle head, a puncture needle core, a piston rod, a rubber piston sleeve, a piston driving rod and a gear part, wherein a partition plate is arranged in the tube body, the puncture needle head is arranged on a needle head connecting tube, the piston driving rod is inserted in a piston driving rod jack, the piston rod is inserted in the piston rod jack, the rubber piston sleeve is sleeved at the front end of the piston rod, the gear part is rotatably arranged on the tube body, the piston rod comprises piston rod teeth, the piston driving rod comprises piston driving rod teeth, a piston rod needle core jack is arranged on the piston rod, a rubber piston sleeve needle core jack is arranged on the rubber piston sleeve, a puncture needle core positioning part is arranged at the side part of the tube body, a puncture needle core positioning jack is arranged on the puncture needle core positioning jack, a puncture needle core positioning jack is arranged on the, the upper end of the puncture needle core is fixed on the puncture needle core driving head, so that the puncture needle core is smooth and labor-saving when being pulled out.
Description
Technical Field
The utility model relates to a negative pressure suction device for aspiration biopsy.
Background
With the development of medical treatment level, in recent years, fine needle aspiration cytology biopsy under ultrasonic guidance is applied more and more in daily medical treatment. The puncture needle is an indispensable tool, the method is applied under ultrasonic monitoring, target cells of superficial organ tissues are obtained through the puncture needle for pathological diagnosis, such as mammary gland, thyroid gland, lymph node and the like, and the method is the fastest, simple, convenient and safe method for early diagnosis of benign and malignant target cells.
Compared with the prior histological biopsy, the method has the advantages of small damage, small risk, reliable result and the like. However, as clinical work progresses, a new problem arises in that the specific tissue composition of a lesion determines its physical properties, and may be soft, tough, hard, or relatively viscous.
For soft-texture lesions, cells in the lesion site are easily extracted through the puncture needle. However, for tough, hard or viscous texture, diagnostic cells are difficult to extract by simply relying on a puncture needle, resulting in an unsatisfactory puncture result.
if proper external negative pressure suction can be combined in the process of lifting and inserting the puncture needle, the success rate is greatly improved. However, in actual work, the difficulty of external negative pressure suction during the puncture needle puncture lifting and inserting process is very high, during puncture, an operator generally holds the ultrasonic probe with the left hand to perform real-time monitoring, and holds the puncture needle with the right hand to perform tissue puncture lifting and inserting, and at this time, the operator cannot lift and insert the puncture needle and perform negative pressure suction at the same time. If the assistant holds the injector to perform auxiliary negative pressure suction at the tail part of the puncture needle, the matching of the two persons is a great problem, and the coordination of the action amplitude and the frequency is difficult to realize. Because the action amplitude of extracting the pathological cells is small and accurate, the puncture risk is greatly increased if a method of assistant auxiliary negative pressure suction is adopted.
and the puncture needle head of the puncture needle is of a hollow structure and can be provided with a puncture needle core, the puncture needle core is an entity, the puncture needle core just fills the hollow part of the puncture needle head, and the puncture needle core has the function of preventing tissue fragments and other non-target tissues from entering the hollow part of the puncture needle head in the puncture process to interfere and influence the diagnosis result.
The prior puncture needle has few functions of combining proper external negative pressure suction and pulling out the puncture needle core in the process of single-hand operation lifting and inserting.
the puncture needle core is bent and fixed on the tube body, and in the process of pulling and pulling out the puncture needle core, the puncture needle core is always in a bent state, so that the puncture needle core is not pulled out smoothly, and the requirement on the material of the puncture needle core is higher.
Disclosure of Invention
to the above technical problem, the utility model provides a: the puncture needle core does not need to be bent, and the puncture needle core can be operated by a single hand to enter negative pressure for suction and can be smoothly pulled out by the puncture needle core.
in order to solve the technical problem, the negative pressure suction device for the puncture biopsy comprises a tube body, a hollow puncture needle head, a puncture needle core, a piston rod, a rubber piston sleeve, a piston driving rod and a gear part, wherein the front end of the tube body is sealed and provided with a front opening, the rear end of the tube body is provided with an opening, a partition plate is arranged in the tube body and divides the space in the tube body into a piston rod jack and a piston driving rod jack, the front end of the tube body is provided with a needle head connecting pipe, the puncture needle head is arranged on the needle head connecting pipe, the puncture needle head, the needle head connecting pipe and the piston rod jack are communicated, the piston driving rod is inserted in the piston driving rod jack, the piston rod is inserted in the piston rod jack, the rubber piston sleeve is sleeved at the front end of the piston rod, the rubber piston sleeve is in butt fit with, the piston rod comprises a piston rod tooth, the piston driving rod comprises a piston driving rod tooth, the piston rod tooth and the piston driving rod tooth are arranged oppositely, the gear part is positioned between the piston rod tooth and the piston driving rod tooth, the piston rod tooth and the piston driving rod tooth are both meshed with the gear part, the piston rod is provided with a piston rod needle core jack, the rubber piston sleeve is provided with a rubber piston sleeve needle core jack, the puncture needle core is inserted into the piston rod needle core jack, the rubber piston sleeve needle core jack, the needle connecting pipe and the puncture needle,
the utility model discloses a puncture needle core, including body, body lateral part, puncture needle core positioning pin, puncture needle core drive head, the upper end of puncture needle core is fixed and is overhead at puncture needle core drive, puncture needle core positioning pin parallels with the puncture needle core.
Namely a tubular structure, and the front end of the puncture needle is a tubular hollow structure used for connecting the tail part of the puncture needle; the device is mainly of a hollow pipe-shaped structure, a longitudinal plane partition plate is arranged in the pipe, the hollow part in the pipe is longitudinally divided into two parts of spaces, one part of the spaces is communicated with the front-end tubular hollow structure, a piston-shaped structure is arranged in the hollow part and is tightly attached to the pipe wall, and a sawtooth-shaped structure is arranged on the partition side of the piston and is meshed with a gear fixed on a pipe body above the partition plate; a rod body with a similar structure is arranged in the space on the other side to drive the rod structure, a sawtooth structure is arranged on the separation side, the lower pressure rod body is meshed with the gear, the lower pressure rod body drives the rod, the piston on the opposite side moves upwards through the gear transmission, and drives the puncture needle core to move upwards to generate negative pressure, and cells of superficial tissues and organs are sucked into the puncture needle.
The utility model provides a negative pressure suction device for aspiration biopsy's beneficial effect is: when in use, the puncture needle head is punctured into cells of superficial tissues and organs, then the piston is pressed to drive the rod, the piston on the rod is driven by the piston to drive the rod teeth to move downwards to drive the gear part to rotate, the gear part rotates to drive the piston rod teeth and the piston rod to move upwards, the piston rod moves upwards to drive the rubber piston sleeve to move upwards, and when the piston rod moves upwards, the puncture needle core is driven to drive the head to move upwards, the puncture needle core drives the head to move upwards to drive the puncture needle core and the puncture needle core positioning inserted rod to move,
When the puncture needle core leaves the puncture needle head, the rubber piston sleeve moves upwards to generate negative pressure in the puncture needle head, so that the cells of the superficial tissues and organs are sucked into the puncture needle, and the cells of the superficial tissues and organs can be extracted by one hand,
that is to say, the operator can carry out the lifting and inserting of the puncture needle and the pulling out of the puncture needle core and the negative pressure suction at the same time, the action is accurate, the problems that the difficulty of the external negative pressure suction is high in the process of lifting and inserting the puncture needle, the negative pressure suction matching is difficult through the assistance of an assistant, and the action amplitude and the frequency coordination are inconsistent are avoided, the danger in the puncture is avoided, and the tissue fragments and other non-target tissues enter the hollow part of the puncture needle head to interfere and influence the diagnosis result,
the puncture needle core is not in a bending state, the puncture needle core is in a straight state, and the puncture needle core is parallel to the puncture needle core positioning insertion rod, so that the puncture needle core is smoothly labor-saving when being pulled out, and the puncture needle core positioning insertion rod cannot swing left and right under the positioning of the puncture needle core positioning insertion hole, so that the puncture needle core is more smoothly labor-saving when being pulled out.
Furthermore, a puncture needle core positioning inserted bar retaining part is arranged on the puncture needle core positioning part, the puncture needle core positioning inserted bar retaining part is matched with the puncture needle core positioning inserted bar,
The puncture needle core positioning insertion rod has the beneficial effects that the puncture needle core positioning insertion rod stopping component is arranged, so that certain resistance can be provided for the puncture needle core positioning insertion rod, and the puncture needle core positioning insertion rod is prevented from displacing under the self gravity.
Furthermore, a stopping component mounting post is arranged on the puncture needle core positioning piece, the stopping component of the puncture needle core positioning inserted rod comprises a stopping component pressing piece, a stopping component supporting spring, a stopping component snap spring and a stopping component pressing ball, a stopping component pressing piece is provided with a stopping component pressing piece sleeve and a hole, the stopping component mounting post is provided with a stopping component mounting post clamping groove, the stopping component pressing piece is sleeved on the stopping component mounting post, the stopping component snap spring is clamped on the stopping component mounting post clamping groove, the stopping component supporting spring is sleeved on the stopping component mounting post, the stopping component supporting spring is positioned between the stopping component snap spring and the stopping component pressing piece, one end of the stopping component supporting spring is abutted against the stopping component snap spring, the other end of the stopping component supporting spring is abutted against the stopping component, and the stopping component pressing ball is mounted on the stopping component pressing piece, the retaining component pressing ball is in butt fit with the puncture needle core positioning insertion rod,
the puncture needle core positioning insertion rod has the advantages that the structure can provide certain resistance for the puncture needle core positioning insertion rod, and can prevent the puncture needle core positioning insertion rod from being blocked by the puncture needle core positioning insertion rod stopping component.
Furthermore, the bottom of the puncture needle core driving head is provided with a driving head puncture needle core jack, the lateral part of the puncture needle core driving head is provided with a driving head puncture needle core fixing threaded hole, the driving head puncture needle core fixing threaded hole is communicated with the driving head puncture needle core jack, the driving head puncture needle core fixing threaded hole is provided with a puncture needle core fixing screw, the upper end of the puncture needle core is inserted into the driving head puncture needle core jack, and the front end of the puncture needle core fixing screw is abutted to the puncture needle core.
the puncture needle core has the advantages that the structure enables the puncture needle core and the puncture needle core driving head to be fixed firmly, the puncture needle core is prevented from being separated, and the puncture needle core is convenient and simple to install on the puncture needle core driving head.
Further, the piston rod comprises a piston rod body, a piston rod toothed plate and a piston rod toothed plate fixing screw, a piston rod body groove is arranged on the piston rod body, a piston rod body groove threaded hole is arranged on the piston rod body groove, a piston rod toothed plate screw hole is arranged on the piston rod toothed plate, the piston rod toothed plate is screwed into the piston rod body groove threaded hole through the piston rod toothed plate screw hole by the piston rod toothed plate fixing screw, the piston rod teeth are arranged on the piston rod toothed plate, the piston driving rod comprises a piston driving rod body, a piston driving rod toothed plate and a piston driving rod toothed plate fixing screw, a piston driving rod body groove is arranged on the piston driving rod body, a piston driving rod body groove threaded hole is arranged on the piston driving rod body groove, a piston driving rod toothed plate screw hole is arranged on the piston driving rod toothed plate, the piston driving rod toothed plate passes through a piston driving rod toothed plate screw hole through a piston driving rod toothed plate fixing screw to be screwed into a piston driving rod groove threaded hole to be installed on a piston driving rod groove, the piston driving rod toothed plate is arranged on the piston driving rod toothed plate, the gear part comprises a gear shaft and a gear, a gear shaft installation threaded hole is formed in the pipe body, gear shaft threads are formed in the gear shaft, the gear shaft is installed on the gear shaft installation threaded hole, the gear shaft installation threaded hole is matched with the gear shaft threads, the gear is rotatably sleeved on the gear shaft, the piston rod toothed plate and the piston driving rod toothed plate are both meshed with the gear, a gear left limiting strip and a gear right limiting strip are arranged on the piston rod body, the left side of the gear is in butt fit with the gear left limiting strip, and the right side of the gear is in,
The beneficial effects are that, this kind of structure makes the cooperation stable between piston rod and the piston drive pole, prevents that the gear from skidding to can restrict the gear and remove about, prevent that the gear from dying with the inner wall friction card of body.
Furthermore, the front end of the piston rod is provided with a rubber piston sleeve plug, the rubber piston sleeve plug is provided with a rubber piston sleeve limiting convex ring, the inner wall of the rubber piston sleeve is provided with a rubber piston sleeve limiting concave ring, the rubber piston sleeve limiting convex ring enters the rubber piston sleeve limiting concave ring, the outer surface of the rubber piston sleeve is provided with a rubber piston sleeve sealing convex ring, the rubber piston sleeve sealing convex ring is in butt fit with the inner wall of the piston rod jack,
The beneficial effects are that, this kind of structure makes rubber piston sleeve installation more firm, and rubber piston sleeve is inseparabler with piston rod jack inner wall butt, and the negative pressure effect is better.
Further, be equipped with on the piston drive pole and press the lantern ring, the both sides of body are equipped with left drag hook and right drag hook respectively, wherein press the lantern ring and pass through the mounting of screw on the piston drive pole for it is more handy during the use.
The invention is further described with reference to the accompanying drawings and the detailed description.
Drawings
FIG. 1 is a schematic structural view of a vacuum aspiration device for needle biopsy provided by the present invention;
fig. 2 is a second schematic structural view of the negative pressure suction device for needle biopsy provided by the present invention;
FIG. 3 is one of the schematic cross-sectional structural diagrams of the vacuum aspiration device for needle biopsy provided by the present invention;
fig. 4 is a second schematic cross-sectional view of the vacuum aspiration device for needle biopsy provided by the present invention;
FIG. 5 is a partially enlarged schematic structural view of a negative pressure suction device for needle biopsy according to the present invention;
fig. 6 is a second schematic view of the partial enlarged structure of the vacuum aspiration device for needle biopsy provided by the present invention;
Fig. 7 is a third schematic view of a partially enlarged structure of the vacuum aspiration device for needle biopsy provided by the present invention;
FIG. 8 is a schematic view of the present invention showing a partial cross-sectional enlarged structure of a vacuum aspiration device for needle biopsy;
fig. 9 is a second schematic view of the partial cross-sectional enlarged structure of the negative pressure suction device for needle biopsy provided by the present invention;
FIG. 10 is a schematic view of an exploded structure of a vacuum suction device for needle biopsy according to the present invention;
FIG. 11 is a second schematic view of the exploded structure of the vacuum suction device for needle biopsy provided by the present invention;
Fig. 12 is a third schematic view of the exploded structure of the vacuum suction device for needle biopsy provided by the present invention;
FIG. 13 is a schematic view of a portion of the components of the vacuum aspiration device for needle biopsy provided by the present invention;
FIG. 14 is a second schematic structural view of a part of the vacuum aspiration device for needle biopsy provided by the present invention;
fig. 15 is an enlarged structural schematic view of a part of components of the vacuum aspiration device for needle biopsy provided by the present invention.
Detailed Description
As shown in fig. 1 to 15, the embodiment of the negative pressure suction device for needle biopsy provided by the present invention comprises a tube 1, a hollow needle 2, a needle core 2-1, a piston rod 3, a rubber piston sleeve 4, a piston driving rod 5 and a gear member 6, wherein the front end of the tube 1 is closed and provided with a front opening, the rear end of the tube 1 is provided with an opening, that is, the tube 1 is in a syringe shape, a partition 7 is provided in the tube 1, the partition 7 divides the space in the tube 1 into a piston rod jack 8 and a piston driving rod jack 9, the front end of the tube 1 is provided with a needle connecting tube 10, the needle 2 is mounted on the needle connecting tube 10, the needle 2, the needle connecting tube 10 and the piston rod jack 8 are communicated, the piston driving rod 5 is inserted in the piston driving rod jack 9, the piston rod 3 is inserted in the piston rod jack 8, the rubber piston sleeve 4 is sleeved at the front end of the piston rod 3, the rubber piston sleeve 4 is in butt fit with the inner wall of the piston rod jack 8, the gear part 6 is rotatably installed on the tube body 1 above the partition plate 7, the piston rod 3 comprises piston rod teeth 11, the piston driving rod 5 comprises piston driving rod teeth 12, the piston rod teeth 11 and the piston driving rod teeth 12 are oppositely arranged, the gear part 6 is located between the piston rod teeth 11 and the piston driving rod teeth 12, the piston rod teeth 11 and the piston driving rod teeth 12 are both meshed with the gear part 6, the piston rod 3 is provided with a piston rod needle core jack 3-1, the rubber piston sleeve 4 is provided with a rubber piston needle core jack 4-1, a puncture needle core 2-1 is inserted into the piston rod needle core jack 3-1 and the rubber piston sleeve needle core jack 4-1, Inside the needle attachment tube 10 and the puncture needle 2,
The side part of the tube body 1 is provided with a puncture needle core positioning piece 1-1, the puncture needle core positioning piece 1-1 is provided with a puncture needle core positioning jack 1-2, the puncture needle core positioning jack 1-2 is provided with a puncture needle core positioning inserted bar 1-3, the puncture needle core positioning inserted bar 1-3 can move up and down in the puncture needle core positioning jack 1-2, the puncture needle core positioning inserted bar 1-3 is provided with a puncture needle core driving head 1-4, the upper end of the puncture needle core 2-1 is fixed on the puncture needle core driving head 1-4, and the puncture needle core positioning inserted bar 1-3 is parallel to the puncture needle core 2-1.
The puncture needle core positioning piece 1-1 is square, the puncture needle core positioning insertion hole 1-2 is a square hole, the puncture needle core positioning insertion rod 1-3 is a square rod, the puncture needle core positioning piece 1-1 and the tube body can be integrally formed, the puncture needle core positioning piece 1-1 can be fixed on the tube body 1 through screws or glue, the puncture needle core driving head 1-4 and the puncture needle core positioning insertion rod 1-3 are integrally formed, and the puncture needle core driving head 1-4 is positioned above the piston rod 3.
the puncture needle core positioning piece 1-1 is provided with a puncture needle core positioning inserted bar retaining part 1-5, and the puncture needle core positioning inserted bar retaining part 1-5 is matched with the puncture needle core positioning inserted bar 1-3. The puncture needle core positioning piece 1-1 is provided with a retaining part mounting column 1-6, the puncture needle core positioning inserted rod retaining part 1-5 comprises a retaining part pressing piece 1-7, a retaining part supporting spring 1-8, a retaining part snap spring 1-9 and a retaining part pressing ball 1-10, the retaining part pressing piece 1-7 is provided with a retaining part pressing piece sleeve hole 1-11, the retaining part mounting column 1-6 is provided with a retaining part mounting column clamping groove 1-12, the retaining part pressing piece 1-7 is sleeved on the retaining part mounting column 1-6, the retaining part snap spring 1-9 is clamped on the retaining part mounting column clamping groove 1-12, the retaining part supporting spring 1-8 is sleeved on the retaining part mounting column 1-6, the anti-return component supporting spring 1-8 is located between the anti-return component clamping spring 1-9 and the anti-return component pressing piece 1-7, one end of the anti-return component supporting spring 1-8 is abutted to the anti-return component clamping spring 1-9, the other end of the anti-return component supporting spring 1-8 is abutted to the anti-return component pressing piece 1-7, the anti-return component pressing ball 1-10 is installed on the anti-return component pressing piece 1-7, and the anti-return component pressing ball 1-10 is abutted and matched with the puncture needle core positioning insertion rod 1-3.
Wherein the puncture needle core positioning piece 1-1 and the retaining component mounting post 1-6 are integrally formed, the retaining component mounting post 1-6 is a square post, the hole 1-11 for sleeving the retaining component pressing piece is a square hole, the retaining component pressing piece 1-7 can not rotate and can move back and forth through square matching, the retaining component snap spring 1-9 is used for fixing the retaining component supporting spring 1-8, the retaining component supporting spring 1-8 is pressed on the retaining component pressing piece 1-7, when the pushing force is greater than the retaining component supporting spring 1-8, the retaining component pressing piece 1-7 can move, when the retaining component pressing piece 1-7 moves back, the retaining component supporting spring 1-8 is compressed, thus the retaining pressing piece 1-7 can be prevented from being blocked, the elastic supporting force can be provided, and the retaining component 1-7 is in a handle shape, the retaining part pressing pieces 1-7 and the retaining part pressing balls 1-10 are integrally formed.
the bottom of the puncture needle core driving head 1-4 is provided with a driving head puncture needle core jack 1-13, the side part of the puncture needle core driving head 1-4 is provided with a driving head puncture needle core fixing threaded hole 1-14, the driving head puncture needle core fixing threaded holes 1-14 are communicated with the driving head puncture needle core jacks 1-13, the driving head puncture needle core fixing threaded hole 1-14 is provided with a puncture needle core fixing screw 1-15, the upper end of the puncture needle core 2-1 is inserted in the puncture needle core jack 1-13 of the driving head, the front end of the puncture needle core fixing screw 1-15 is abutted against the puncture needle core 2-1, that is, the upper end of the puncture needle core 2-1 is fixed in the puncture needle core jack 1-13 of the driving head through the puncture needle core fixing screw 1-15.
The piston rod 3 comprises a piston rod body 13, a piston rod toothed plate 14 and a piston rod toothed plate fixing screw 15, a piston rod body groove 16 is arranged on the piston rod body 13, a piston rod body groove threaded hole 17 is arranged on the piston rod body groove 16, a piston rod toothed plate screw hole 18 is arranged on the piston rod toothed plate 14, the piston rod toothed plate 14 is screwed into the piston rod body groove threaded hole 17 through the piston rod toothed plate screw hole 18 by the piston rod toothed plate fixing screw 15 and is installed on the piston rod body groove 16, the piston rod teeth 11 are arranged on the piston rod toothed plate 14, the piston driving rod 5 comprises a piston driving rod body 5-1, a piston driving rod toothed plate 19 and a piston driving rod toothed plate fixing screw 20, a piston driving rod body groove 21 is arranged on the piston driving rod body 5-1, a piston driving rod body groove 22 is arranged on the piston driving rod body groove 21, the piston driving rod toothed plate 19 is provided with a piston driving rod toothed plate screw hole 23, the piston driving rod toothed plate 19 passes through a piston driving rod toothed plate fixing screw 20 and is installed on the piston driving rod groove threaded hole 22 in the piston driving rod threaded hole 23, the piston driving rod toothed plate 12 is arranged on the piston driving rod toothed plate 19, the gear part 6 comprises a gear shaft 24 and a gear 25, the pipe body 1 is provided with a gear shaft installation threaded hole 26, the gear shaft 24 is provided with a gear shaft thread 27, the gear shaft 24 is installed on the gear shaft installation threaded hole 26, the gear shaft installation threaded hole 26 is matched with the gear shaft thread 27, the gear 25 is rotatably sleeved on the gear shaft 24, the piston rod toothed 11 and the piston driving rod toothed 12 are both meshed with the gear 25, and the piston rod 13 is provided with a gear left limit strip 28 and a gear right limit strip 29, the left side of the gear 25 is in butt fit with a gear left limiting strip 28, and the right side of the gear 25 is in butt fit with a gear right limiting strip 29.
the front end of piston rod 3 is equipped with rubber piston bush plug 30, be equipped with the spacing protruding circle 31 of rubber piston bush on the rubber piston bush plug 30, be equipped with the spacing concave circle 32 of rubber piston bush on the inner wall of rubber piston bush 4, the spacing protruding circle 31 of rubber piston bush gets into in the spacing concave circle 32 of rubber piston bush, the surface of rubber piston bush 4 is equipped with the sealed protruding circle 33 of rubber piston bush, the sealed protruding circle 33 of rubber piston bush and the 8 inner wall butt cooperations of piston rod jack.
be equipped with on the piston drive rod 5 and press the lantern ring 34, the both sides of body 1 are equipped with left drag hook 35 and right drag hook 36 respectively, and wherein press the lantern ring 34 and pass through the fix with screw on piston drive rod 5, left drag hook 35 and right drag hook 36 and body 1 integrated into one piece.
As required, detailed embodiments of the present invention are disclosed herein, but it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The figures are not necessarily to scale. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (10)
1. a negative pressure suction device for aspiration biopsy characterized in that: comprises a tube body (1), a hollow puncture needle head (2), a puncture needle core (2-1), a piston rod (3), a rubber piston sleeve (4), a piston driving rod (5) and a gear part (6), wherein the front end of the tube body (1) is sealed and provided with a front hole, the rear end of the tube body (1) is provided with a hole, a partition plate (7) is arranged in the tube body (1), the space in the tube body (1) is divided into a piston rod jack (8) and a piston driving rod jack (9) by the partition plate (7), the front end of the tube body (1) is provided with a needle head connecting pipe (10), the puncture needle head (2) is arranged on the needle head connecting pipe (10), the puncture needle head (2), the needle head connecting pipe (10) and the piston rod jack (8) are communicated, the piston driving rod (5) is inserted in the piston driving rod jack (9), the piston rod (3) is inserted in the, the rubber piston sleeve (4) is sleeved at the front end of the piston rod (3), the rubber piston sleeve (4) is in butt fit with the inner wall of the piston rod jack (8), the gear part (6) is rotatably installed on the pipe body (1) above the partition plate (7), the piston rod (3) comprises piston rod teeth (11), the piston driving rod (5) comprises piston driving rod teeth (12), the piston rod teeth (11) and the piston driving rod teeth (12) are oppositely arranged, the gear part (6) is located between the piston rod teeth (11) and the piston driving rod teeth (12), the piston rod teeth (11) and the piston driving rod teeth (12) are both meshed with the gear part (6), the piston rod (3) is provided with a piston rod pin jack (3-1), the rubber piston sleeve (4) is provided with a rubber piston sleeve pin jack (4-1), the puncture needle core (2-1) is inserted into the piston rod needle core jack (3-1), the rubber piston sleeve needle core jack (4-1), the needle head connecting pipe (10) and the puncture needle head (2),
The puncture needle core positioning device is characterized in that a puncture needle core positioning piece (1-1) is arranged on the lateral portion of the tube body (1), a puncture needle core positioning jack (1-2) is arranged on the puncture needle core positioning jack (1-1), a puncture needle core positioning insertion rod (1-3) is arranged on the puncture needle core positioning jack (1-2), the puncture needle core positioning insertion rod (1-3) can move up and down in the puncture needle core positioning jack (1-2), a puncture needle core driving head (1-4) is arranged on the puncture needle core positioning insertion rod (1-3), the upper end of the puncture needle core (2-1) is fixed on the puncture needle core driving head (1-4), and the puncture needle core positioning insertion rod (1-3) is parallel to the puncture needle core (2-1).
2. The negative pressure aspiration device for needle biopsy of claim 1, wherein: the puncture needle core positioning piece (1-1) is provided with a puncture needle core positioning inserted bar retaining part (1-5), and the puncture needle core positioning inserted bar retaining part (1-5) is matched with the puncture needle core positioning inserted bar (1-3).
3. The negative pressure aspiration device for needle biopsy of claim 2, wherein: the puncture needle core positioning piece is characterized in that a retaining part mounting column (1-6) is arranged on the puncture needle core positioning piece (1-1), a retaining part positioning insertion rod retaining part (1-5) comprises a retaining part pressing piece (1-7), a retaining part supporting spring (1-8), a retaining part clamping spring (1-9) and a retaining part pressing ball (1-10), a retaining part pressing piece sleeve forming hole (1-11) is formed in the retaining part pressing piece (1-7), a retaining part mounting column clamping groove (1-12) is formed in the retaining part mounting column (1-6), a retaining part pressing piece (1-7) is sleeved on the retaining part mounting column (1-6), the retaining part clamping spring (1-9) is clamped on the retaining part mounting column clamping groove (1-12), and a retaining part supporting spring (1-8) is sleeved on the retaining part mounting column (1-6) ) The anti-return device is characterized in that the anti-return device supporting spring (1-8) is located between the anti-return device clamping spring (1-9) and the anti-return device pressing piece (1-7), one end of the anti-return device supporting spring (1-8) is abutted to the anti-return device clamping spring (1-9), the other end of the anti-return device supporting spring (1-8) is abutted to the anti-return device pressing piece (1-7), the anti-return device pressing ball (1-10) is installed on the anti-return device pressing piece (1-7), and the anti-return device pressing ball (1-10) is abutted and matched with the puncture needle core positioning insertion rod (1-3).
4. the negative pressure aspiration device for needle biopsy of claim 1, 2 or 3, wherein: the bottom of the puncture needle core driving head (1-4) is provided with a driving head puncture needle core jack (1-13), the side part of the puncture needle core driving head (1-4) is provided with a driving head puncture needle core fixing threaded hole (1-14), the driving head puncture needle core fixing threaded hole (1-14) is communicated with the driving head puncture needle core jack (1-13), the driving head puncture needle core fixing threaded hole (1-14) is provided with a puncture needle core fixing screw (1-15), the upper end of the puncture needle core (2-1) is inserted into the driving head puncture needle core jack (1-13), and the front end of the puncture needle core fixing screw (1-15) is abutted against the puncture needle core (2-1).
5. The negative pressure aspiration device for needle biopsy of claim 1, 2 or 3, wherein: the piston rod (3) comprises a piston rod body (13), a piston rod toothed plate (14) and a piston rod toothed plate fixing screw (15), a piston rod body groove (16) is formed in the piston rod body (13), a piston rod body groove threaded hole (17) is formed in the piston rod body groove (16), a piston rod toothed plate screw hole (18) is formed in the piston rod toothed plate (14), the piston rod toothed plate (14) penetrates through the piston rod toothed plate screw hole (18) through the piston rod toothed plate fixing screw (15) and is screwed into the piston rod body groove threaded hole (17) to be installed on the piston rod body groove (16), the piston rod teeth (11) are arranged on the piston rod toothed plate (14),
The piston driving rod (5) comprises a piston driving rod body (5-1), a piston driving rod toothed plate (19) and a piston driving rod toothed plate fixing screw (20), a piston driving rod body groove (21) is formed in the piston driving rod body (5-1), a piston driving rod body groove threaded hole (22) is formed in the piston driving rod body groove (21), a piston driving rod toothed plate screw hole (23) is formed in the piston driving rod toothed plate (19), the piston driving rod toothed plate (19) penetrates through the piston driving rod toothed plate screw hole (23) through the piston driving rod toothed plate fixing screw (20) and is screwed into the piston driving rod body groove threaded hole (22) to be installed on the piston driving rod body groove (21), the piston driving rod tooth (12) is arranged on the piston driving rod toothed plate (19), and the gear component (6) comprises a gear shaft (24) and a gear (25), be equipped with gear shaft installation screw hole (26) on body (1), be equipped with gear shaft screw thread (27) on gear shaft (24), install on gear shaft installation screw hole (26) gear shaft (24), gear shaft installation screw hole (26) cooperate with gear shaft screw thread (27), the rotatable cover of gear (25) is established on gear shaft (24), piston rod tooth (11) and piston drive rod tooth (12) all mesh with gear (25), be equipped with gear left spacing (28) and gear right spacing (29) on the piston rod body of rod (13), the left side and the gear left spacing (28) butt cooperation of gear (25), the right side and the gear right spacing (29) butt cooperation of gear (25).
6. The negative pressure aspiration device for needle biopsy of claim 4, wherein: the piston rod (3) comprises a piston rod body (13), a piston rod toothed plate (14) and a piston rod toothed plate fixing screw (15), a piston rod body groove (16) is formed in the piston rod body (13), a piston rod body groove threaded hole (17) is formed in the piston rod body groove (16), a piston rod toothed plate screw hole (18) is formed in the piston rod toothed plate (14), the piston rod toothed plate (14) penetrates through the piston rod toothed plate screw hole (18) through the piston rod toothed plate fixing screw (15) and is screwed into the piston rod body groove threaded hole (17) to be installed on the piston rod body groove (16), the piston rod teeth (11) are arranged on the piston rod toothed plate (14),
The piston driving rod (5) comprises a piston driving rod body (5-1), a piston driving rod toothed plate (19) and a piston driving rod toothed plate fixing screw (20), a piston driving rod body groove (21) is formed in the piston driving rod body (5-1), a piston driving rod body groove threaded hole (22) is formed in the piston driving rod body groove (21), a piston driving rod toothed plate screw hole (23) is formed in the piston driving rod toothed plate (19), the piston driving rod toothed plate (19) penetrates through the piston driving rod toothed plate screw hole (23) through the piston driving rod toothed plate fixing screw (20) and is screwed into the piston driving rod body groove threaded hole (22) to be installed on the piston driving rod body groove (21), the piston driving rod tooth (12) is arranged on the piston driving rod toothed plate (19), and the gear component (6) comprises a gear shaft (24) and a gear (25), be equipped with gear shaft installation screw hole (26) on body (1), be equipped with gear shaft screw thread (27) on gear shaft (24), install on gear shaft installation screw hole (26) gear shaft (24), gear shaft installation screw hole (26) cooperate with gear shaft screw thread (27), the rotatable cover of gear (25) is established on gear shaft (24), piston rod tooth (11) and piston drive rod tooth (12) all mesh with gear (25), be equipped with gear left spacing (28) and gear right spacing (29) on the piston rod body of rod (13), the left side and the gear left spacing (28) butt cooperation of gear (25), the right side and the gear right spacing (29) butt cooperation of gear (25).
7. the negative pressure aspiration device for needle biopsy of claim 1, 2 or 3, wherein: the front end of piston rod (3) is equipped with rubber piston cover plug (30), be equipped with the spacing protruding circle of rubber piston cover (31) on rubber piston cover plug (30), be equipped with the spacing concave circle of rubber piston cover (32) on the inner wall of rubber piston cover (4), the spacing protruding circle of rubber piston cover (31) gets into in the spacing concave circle of rubber piston cover (32), the surface of rubber piston cover (4) is equipped with the sealed protruding circle of rubber piston cover (33), the sealed protruding circle of rubber piston cover (33) and piston rod jack (8) inner wall butt cooperation.
8. The negative pressure aspiration device for needle biopsy of claim 4, wherein: the front end of piston rod (3) is equipped with rubber piston cover plug (30), be equipped with the spacing protruding circle of rubber piston cover (31) on rubber piston cover plug (30), be equipped with the spacing concave circle of rubber piston cover (32) on the inner wall of rubber piston cover (4), the spacing protruding circle of rubber piston cover (31) gets into in the spacing concave circle of rubber piston cover (32), the surface of rubber piston cover (4) is equipped with the sealed protruding circle of rubber piston cover (33), the sealed protruding circle of rubber piston cover (33) and piston rod jack (8) inner wall butt cooperation.
9. The negative pressure aspiration device for needle biopsy of claim 6, wherein: the front end of piston rod (3) is equipped with rubber piston cover plug (30), be equipped with the spacing protruding circle of rubber piston cover (31) on rubber piston cover plug (30), be equipped with the spacing concave circle of rubber piston cover (32) on the inner wall of rubber piston cover (4), the spacing protruding circle of rubber piston cover (31) gets into in the spacing concave circle of rubber piston cover (32), the surface of rubber piston cover (4) is equipped with the sealed protruding circle of rubber piston cover (33), the sealed protruding circle of rubber piston cover (33) and piston rod jack (8) inner wall butt cooperation.
10. the negative pressure aspiration device for needle biopsy of claim 9, wherein: the piston drives to be equipped with on pole (5) and presses lantern ring (34), the both sides of body (1) are equipped with left drag hook (35) and right drag hook (36) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821653433.7U CN209789894U (en) | 2018-10-12 | 2018-10-12 | Negative pressure suction device for puncture biopsy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821653433.7U CN209789894U (en) | 2018-10-12 | 2018-10-12 | Negative pressure suction device for puncture biopsy |
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| Publication Number | Publication Date |
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| CN209789894U true CN209789894U (en) | 2019-12-17 |
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| CN201821653433.7U Active CN209789894U (en) | 2018-10-12 | 2018-10-12 | Negative pressure suction device for puncture biopsy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109965916A (en) * | 2018-10-12 | 2019-07-05 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Negative pressure suction device for aspiration biopsy |
| CN111942879A (en) * | 2020-08-11 | 2020-11-17 | 程程 | Pre-adjusting method of vessel end cover picking and placing device for clinical laboratory |
| CN111942880A (en) * | 2020-08-11 | 2020-11-17 | 程程 | Ware end cover is got and is put device for clinical laboratory |
| CN111957370A (en) * | 2020-08-11 | 2020-11-20 | 程程 | Method for picking and placing end cover of vessel for clinical laboratory |
-
2018
- 2018-10-12 CN CN201821653433.7U patent/CN209789894U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109965916A (en) * | 2018-10-12 | 2019-07-05 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Negative pressure suction device for aspiration biopsy |
| CN111942879A (en) * | 2020-08-11 | 2020-11-17 | 程程 | Pre-adjusting method of vessel end cover picking and placing device for clinical laboratory |
| CN111942880A (en) * | 2020-08-11 | 2020-11-17 | 程程 | Ware end cover is got and is put device for clinical laboratory |
| CN111957370A (en) * | 2020-08-11 | 2020-11-20 | 程程 | Method for picking and placing end cover of vessel for clinical laboratory |
| CN111942879B (en) * | 2020-08-11 | 2021-11-16 | 中国人民解放军海军第九七一医院 | Pre-adjusting method of vessel end cover picking and placing device for clinical laboratory |
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