CN212215549U

CN212215549U - Pasteur straw

Info

Publication number: CN212215549U
Application number: CN202020371188.1U
Authority: CN
Inventors: 孙慧婷; 史轶超; 虞嘉俊
Original assignee: Changzhou Second Peoples Hospital
Current assignee: Changzhou Second Peoples Hospital
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-12-25
Anticipated expiration: 2030-03-20

Abstract

The utility model relates to a Pasteur sucker, before using, a rubber plug is positioned at the bottom of a sleeve, and the outer circumferential surface of a pull rod is attached to the lower arc surface of a waist-shaped through hole; use the utility model discloses when shifting liquid, hold the sleeve with the hand, insert the body section in the liquid, stock solution section and body section this moment are confined space, upwards promote the push pedal with the thumb, oval through-hole upward movement is followed to the push pedal, the push pedal drives the pull rod upward movement, the pull rod drives the bracing piece upward movement, bracing piece and rubber buffer fixed connection, thereby drive the rubber buffer upward movement, in the time of the rubber buffer upward movement, liquid gets into the body section, and along with the same upward movement of rubber buffer, after the liquid of absorption required volume, stop promoting the push pedal, liquid is in the stock solution section. The utility model has the advantages of being simple in structure and convenient in operation, suction is great, has avoided traditional pasteur straw to be difficult for in the stock solution pipe that inhales liquid pasteur straw, the problem that influences the use of pasteur straw.

Description

Pasteur straw

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a pasteur straw is related to.

Background

In the medical field, it is necessary to transfer a liquid sample using an auxiliary tool, more commonly a pasteur pipette, to transfer the liquid sample there. The conventional pasteur pipette is provided with a suction bag at the back, the suction bag is made of rubber, the suction bag made of rubber is easy to soften and become sticky in summer when the weather is hot, the suction bag is usually overlapped in a contact manner when fingers press the suction bag, the sticky suction bag is easy to stick together, the suction bag is not easy to separate when the fingers are released, suction force cannot be effectively provided, liquid in a culture medium is not easy to be sucked into a liquid storage tube of the pasteur pipette, and the use of the pasteur pipette is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the problems that the suction bag on the conventional pasteur pipette is made of rubber, the rubber suction bag is easy to soften and become sticky in summer when the weather is hot, the suction bag is usually overlapped in a contact manner when fingers press the suction bag, the sticky suction bag is easy to stick together, the suction bag is not easy to separate when the fingers are released, the suction force cannot be effectively provided, liquid in a culture medium is not easy to be sucked into a liquid storage tube of the pasteur pipette, and the use of the pasteur pipette is influenced, the pasteur pipette is provided.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a pasteur's straw, is including the stock solution section that is used for temporary storage liquid, the pot head of stock solution section is equipped with the body section of directly absorbing liquid, the other end demountable installation of stock solution section has the sleeve, coaxial slidable mounting has the rubber buffer in the sleeve, the outer periphery of rubber buffer with the laminating of telescopic inner circle face, perpendicular fixed mounting has the bracing piece on the rubber buffer, fixed mounting has the pull rod on the bracing piece, waist circle shape through-hole has been seted up on the telescopic length direction, the pull rod is worn to establish waist circle shape through-hole, the one end fixed mounting of pull rod has the push pedal, the push pedal with the laminating of telescopic outer periphery, the length of bracing piece is greater than the length of waist circle shape through-hole.

Before the utility model is used, the rubber plug is positioned at the bottommost part of the sleeve, and the outer circumferential surface of the pull rod is attached to the lower arc surface of the waist-shaped through hole; use the utility model discloses when shifting liquid, hold the sleeve with the hand, insert the body section in the liquid, stock solution section and body section this moment are confined space, upwards promote the push pedal with the thumb, oval through-hole upward movement is followed to the push pedal, the push pedal drives the pull rod upward movement, the pull rod drives the bracing piece upward movement, bracing piece and rubber buffer fixed connection, thereby drive the rubber buffer upward movement, in the time of the rubber buffer upward movement, liquid gets into the body section, and along with the same upward movement of rubber buffer, after the liquid of absorption required volume, stop promoting the push pedal, liquid is in the stock solution section.

In order to realize that the sleeve is detachably mounted at one end of the liquid storage section, the other end of the liquid storage section is fixedly provided with the fixed cylinder, the outer circumferential surface of the fixed cylinder is provided with external threads, the inner circumferential surface of the sleeve is provided with internal threads, and the sleeve threads are mounted on the fixed cylinder.

In order to fixedly install the supporting rod on the rubber plug, the utility model also comprises a fixing plate, a through hole is arranged at the center of the rubber plug, one end of the supporting rod is fixedly connected with the fixing plate after passing through the through hole, the upper surface of the fixing plate is bonded with the lower surface of the rubber plug, the supporting rod drives the fixing plate to move upwards while moving upwards, and the fixing plate supports the rubber plug to move upwards; when the supporting rod moves downwards, the fixing plate is bonded with the rubber plug, so that the rubber plug is dragged to move downwards.

For better promotion push pedal, be equipped with a plurality of anti-skidding archs on the push pedal, increased the area of contact of push pedal with the hand, effectively prevented the slip between hand and the push pedal.

If telescopic surface is glossy, the staff is using the utility model discloses the time, slippage in the palm is followed easily to the sleeve, also does not make things convenient for the staff to promote the push pedal, consequently the antiskid recess has been seted up on the telescopic outer periphery, antiskid recess with the push pedal sets up relatively.

The utility model has the advantages that before the utility model is used, the rubber plug is positioned at the bottom of the sleeve, and the outer circumference of the pull rod is jointed with the lower arc surface of the waist-shaped through hole; use the utility model discloses when shifting liquid, hold the sleeve with the hand, insert the body section in the liquid, stock solution section and body section this moment are confined space, upwards promote the push pedal with the thumb, oval through-hole upward movement is followed to the push pedal, the push pedal drives the pull rod upward movement, the pull rod drives the bracing piece upward movement, bracing piece and rubber buffer fixed connection, thereby drive the rubber buffer upward movement, in the time of the rubber buffer upward movement, liquid gets into the body section, and along with the same upward movement of rubber buffer, after the liquid of absorption required volume, stop promoting the push pedal, liquid is in the stock solution section. The utility model has the advantages of being simple in structure and convenient in operation, suction is great, has avoided traditional pasteur straw to be difficult for in the stock solution pipe that inhales liquid pasteur straw, the problem that influences the use of pasteur straw.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a two-dimensional schematic view of the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1 in accordance with the present invention;

fig. 3 is an enlarged view of a portion a of fig. 2 according to the present invention.

In the figure: 1. the anti-skid device comprises a liquid storage section, a pipe body section 2, a sleeve 3, a rubber plug 4, a supporting rod 5, a pull rod 6, a kidney-shaped through hole 7, a push plate 8, a fixing cylinder 9, a fixing plate 10, anti-skid protrusions 11 and anti-skid grooves 12.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

The pasteur pipette as shown in fig. 1 comprises a liquid storage section 1 for temporarily storing liquid, wherein one end of the liquid storage section 1 is sleeved with a pipe body section 2 for directly sucking the liquid, the other end of the liquid storage section 1 is fixedly provided with a fixed cylinder 9, an external thread is arranged on the outer circumferential surface of the fixed cylinder 9, an internal thread is arranged on the inner circumferential surface of the sleeve 3, and the sleeve 3 is arranged on the fixed cylinder 9 in a threaded manner. Coaxial slidable mounting has rubber buffer 4 in sleeve 3, the outer periphery of rubber buffer 4 with the laminating of the interior circumference of sleeve 3, the through-hole has been seted up at the center of rubber buffer 4, the one end of bracing piece 5 is passed behind the through-hole with fixed plate 10 fixed connection, the upper surface of fixed plate 10 with the lower surface bonding of rubber buffer 4, fixed mounting has pull rod 6 on the bracing piece 5, as shown in figure 2, waist circular through-hole 7 has been seted up on the length direction of sleeve 3, pull rod 6 wears to establish waist circular through-hole 7, the one end fixed mounting of pull rod 6 has push pedal 8, be equipped with a plurality of non-slip raised 11 on the push pedal 8, as shown in figure 3, push pedal 8 with the laminating of the outer periphery of sleeve 3, non-slip recess 12 has been seted up on the outer periphery of sleeve 3, non-slip recess 12 with push pedal 8 sets up relatively, the length of the support rod 5 is greater than that of the waist-shaped through hole 7.

Before the utility model is used, the rubber plug 4 is positioned at the bottommost part of the sleeve 3, and the outer circumferential surface of the pull rod 6 is attached to the lower arc surface of the waist-shaped through hole 7; use the utility model discloses when shifting liquid, hold sleeve 3 with the hand, insert pipe section 2 in the liquid, stock solution section 1 and pipe section 2 this moment are enclosure space, upwards promote push pedal 8 with the thumb, push pedal 8 is along oval through-hole 7 upward movement, push pedal 8 drives pull rod 6 upward movement, pull rod 6 drives 5 upward movement of bracing piece, bracing piece 5 and rubber buffer 4 fixed connection, thereby drive rubber buffer 4 upward movement, in the time of rubber buffer 4 upward movement, liquid gets into pipe section 2, and along with rubber buffer 4 together upward movement, after absorbing required amount's liquid, stop promoting push pedal 8, liquid is in stock solution section 1.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A pasteur pipette, characterised in that: comprises a liquid storage section (1) for temporarily storing liquid, one end of the liquid storage section (1) is sleeved with a pipe body section (2) for directly absorbing the liquid, the other end of the liquid storage section (1) is detachably provided with a sleeve (3), a rubber plug (4) is coaxially and slidably arranged in the sleeve (3), the outer circumferential surface of the rubber plug (4) is attached to the inner circumferential surface of the sleeve (3), a supporting rod (5) is vertically and fixedly arranged on the rubber plug (4), a pull rod (6) is fixedly arranged on the supporting rod (5), a waist-shaped through hole (7) is arranged in the length direction of the sleeve (3), the pull rod (6) penetrates through the waist-shaped through hole (7), one end of the pull rod (6) is fixedly provided with a push plate (8), the push plate (8) is attached to the outer circumferential surface of the sleeve (3), and the length of the support rod (5) is greater than that of the waist-shaped through hole (7).

2. The pasteur pipette, according to claim 1, wherein: the other end of the liquid storage section (1) is fixedly provided with a fixed cylinder (9), the outer circumference of the fixed cylinder (9) is provided with external threads, the inner circumference of the sleeve (3) is provided with internal threads, and the sleeve (3) is installed on the fixed cylinder (9) in a threaded mode.

3. The pasteur pipette, according to claim 1, wherein: still include fixed plate (10), the through-hole has been seted up at the center of rubber buffer (4), the one end of bracing piece (5) is passed behind the through-hole with fixed plate (10) fixed connection, the upper surface of fixed plate (10) with the lower surface bonding of rubber buffer (4).

4. The pasteur pipette, according to claim 1, wherein: the push plate (8) is provided with a plurality of anti-skid bulges (11).

5. The pasteur pipette, according to claim 1, wherein: an anti-slip groove (12) is formed in the outer circumferential surface of the sleeve (3), and the anti-slip groove (12) and the push plate (8) are arranged oppositely.