CN215194586U - Card type multi-needle injection needle head capable of controlling needle outlet length - Google Patents
Card type multi-needle injection needle head capable of controlling needle outlet length Download PDFInfo
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- CN215194586U CN215194586U CN202120319451.7U CN202120319451U CN215194586U CN 215194586 U CN215194586 U CN 215194586U CN 202120319451 U CN202120319451 U CN 202120319451U CN 215194586 U CN215194586 U CN 215194586U
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- needle
- seat
- card
- negative pressure
- pressure seat
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Abstract
A multi-needle syringe needle with a card type needle outlet length control function comprises a needle seat, a flow dividing seat, a negative pressure seat, a conical seat, a needle tube, a negative pressure seat cover plate and an adjusting card; be equipped with the reference column on the lateral wall of needle file, be equipped with on the lateral wall of negative pressure seat with reference column matched with spout and supply adjustment card male card constant head tank, be equipped with the draw-in groove of the reference column embedding of a plurality of confession needle files on the adjustment card, and every draw-in groove corresponds one-level and goes out needle length, through orientation and the position that change adjustment card inserted the spout of negative pressure seat, the draw-in groove that makes the required needle length of going out of correspondence of adjustment card blocks the reference column of needle file, realize the axial displacement and the location of negative pressure seat, thereby realize high accuracy control and go out needle length. The needle seat and the negative pressure seat are also in guiding fit with the guide post through the guide hole, so that the precision of the length of the needle is ensured. The adjusting card can adopt a single-piece or double-piece structure, the shape is not limited, the tolerance fit of injection molding is conveniently realized, and the tolerance compensation of a finished product is realized.
Description
Technical Field
The utility model belongs to the technical field of the syringe, concretely relates to card formula control goes out multi-needle syringe needle of needle length.
Background
Most of the prior multi-needle injection needle products on the market are shown in fig. 1, and comprise a needle base 1, a shunt base 2, a negative pressure base 3, a conical base 4, an adjusting knob 5 and a needle tube 6. Inseparable lock about negative pressure seat 3 and adjust knob 5, awl seat 4 and 5 screw-thread fit of adjust knob, there is the external screw thread on the awl seat 4, adjust knob 5's centre bore has the internal thread, make negative pressure seat 3 reciprocate through rotatory adjust knob 5, and then negative pressure seat 3's play needle face a takes place to remove, thereby the distance that makes the needle tubing 6 of fixing on needle file 1 and reposition of redundant personnel seat 2 to negative pressure seat 3 play needle face a changes, realize the purpose of adjusting out needle length.
This way of adjusting the length of the needle is simple, but the requirements on the thread are high, and at the same time the whole process of rotating the adjusting knob 5 has the risk of achieving positioning at any time without drift angle. Moreover, because the stepless adjustment is adopted, how to combine the whole needle to realize accurate calibration and indicate the length of the needle adjustment is very difficult; without a scale, the user needs to use the naked eye to evaluate the error of 0.1mm in the adjustment, which is difficult to control.
SUMMERY OF THE UTILITY MODEL
To solve the above problems, the utility model provides a card formula control goes out many needles syringe needle of needle length.
The purpose of the utility model can be realized by the following technical scheme:
a multi-needle injection needle with a card type needle outlet length control function comprises a needle seat, a flow distribution seat, a negative pressure seat, a conical seat and a needle tube, wherein a positioning column is arranged on the outer side wall of the needle seat, and a sliding groove which extends axially and is matched with the positioning column is formed in the side wall of the negative pressure seat; the needle-out adjusting device comprises a needle-out base, a needle-out base cover plate, an adjusting card and a needle-out base cover plate, wherein one end face of the needle-out base is a needle-out face, the other end of the needle-out base is provided with an opening, the needle-out base cover plate is provided with a conical seat which penetrates through the opening, a card positioning groove is formed in the side wall of the negative pressure base where a sliding groove is located, the adjusting card is inserted into the card positioning groove, the adjusting card is provided with a plurality of clamping grooves for embedding positioning columns of the needle base, and each clamping groove corresponds to the length of a primary needle-out; the direction and the position of the adjusting card inserted into the sliding groove of the negative pressure seat are changed, so that the clamping groove of the adjusting card corresponding to the required needle outlet length clamps the positioning column of the needle seat, the axial movement and the positioning of the negative pressure seat are realized, and the needle outlet length is controlled.
Furthermore, each clamping groove of the adjusting card comprises a guiding-in section and a positioning hole, one end of the guiding-in section is communicated with the positioning hole, the other end of the guiding-in section extends to the edge of the adjusting card, the number of the positioning holes of each clamping groove is more than one, and each positioning hole corresponds to the length of the first-stage needle outlet. Furthermore, the extending direction of the card positioning groove of the negative pressure seat is perpendicular to the extending direction of the sliding groove, the adjustment card comprises a sheet body, a plurality of clamping grooves are formed in the sheet body, and the distance from the positioning hole of each clamping groove to one side edge of the sheet body in the axial direction of the negative pressure seat is different.
Furthermore, a plurality of guide holes and a plurality of guide columns which are matched with each other in an axial guide mode are respectively arranged on the needle seat and the negative pressure seat.
Furthermore, the sliding groove of the negative pressure seat extends to the end face of the other end along the axial direction of the negative pressure seat.
Furthermore, the card constant head tank of negative pressure seat is located the surface of spout place lateral wall and extending direction and the extending direction of spout set up perpendicularly.
Furthermore, a through hole for the conical seat to pass through is formed in the center of the negative pressure seat cover plate.
Further, be equipped with a plurality of first syringe mounting holes of cavity and intercommunication cavity bottom surface on the needle file, the reposition of redundant personnel seat is installed in the cavity of needle file and is supported by the one end that stretches into the awl seat in the cavity, is equipped with a plurality of second syringe mounting holes that correspond with a plurality of first syringe mounting holes on the reposition of redundant personnel seat, constitutes the reposition of redundant personnel chamber between reposition of redundant personnel seat and the awl seat, constitutes adjustment and encapsulating chamber between the cavity of reposition of redundant personnel seat and needle file, the negative pressure seat suit is outside the needle file, is equipped with a plurality of third syringe mounting holes and the negative pressure input port that correspond with a plurality of first syringe mounting holes on the negative pressure seat, the awl seat passes negative pressure seat apron, is equipped with the passageway that communicates with reposition of redundant personnel chamber on the awl seat, many every of needle tubing is fixed in first syringe mounting hole and second syringe mounting hole to wear to locate in the third syringe mounting hole.
Furthermore, the adjustment card is of a single-piece structure, a positioning column is arranged on the outer side wall of one side of the needle seat, and a sliding groove and a card positioning groove are formed in the side wall of one side of the negative pressure seat.
Further, the adjustment card is for being even as an organic whole biplate structure through the middle splice bar by two lamellar bodies, is equipped with a plurality of draw-in grooves on every lamellar body, all be equipped with the reference column on the both sides lateral wall of needle file, all be equipped with spout and card constant head tank on the both sides lateral wall of negative pressure seat.
Compared with the prior art, the beneficial effects of the utility model are that: the outer side wall of the needle seat is provided with a positioning column, the side wall of the negative pressure seat is provided with a sliding groove matched with the positioning column and a card positioning groove for inserting an adjusting card, the adjusting card is provided with a plurality of clamping grooves for embedding the positioning column of the needle seat, each clamping groove corresponds to one-stage needle outlet length, the error range of each-stage needle outlet length is within 0.05mm, the clamping groove for adjusting the corresponding required needle outlet length of the card clamps the positioning column of the needle seat by changing the direction and the position of the sliding groove for inserting the adjusting card into the negative pressure seat, and the axial movement and the positioning of the negative pressure seat are realized, so that the needle outlet length is controlled at high precision; the needle seat and the negative pressure seat are respectively provided with a plurality of guide holes and a plurality of guide posts which are matched in a guiding way, so that the needle seat and the negative pressure seat can precisely and concentrically move axially, the precision of the length of the needle can be ensured, and the precise calibration can be easily realized; the adjusting card can adopt a single-piece or double-piece structure, the positioning columns of the needle bases and the sliding grooves of the negative pressure bases and the number and the positions of the card positioning grooves are correspondingly arranged, and meanwhile, the shape of the adjusting card is not limited, so that the injection molding tolerance matching is conveniently realized, and the tolerance compensation of finished products is realized.
Drawings
FIG. 1 is a schematic cross-sectional view of a prior art multiple needle injection needle;
fig. 2 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 3 is an exploded view of embodiment 1 of the present invention;
fig. 4 is a schematic cross-sectional view of embodiment 1 of the present invention;
fig. 5 is a schematic structural view of a needle holder in embodiment 1 of the present invention;
fig. 6 is a schematic structural view of a negative pressure seat in embodiment 1 of the present invention;
fig. 7 is a schematic structural diagram of an adjustment card in embodiment 1 of the present invention;
fig. 8 is a schematic structural view of embodiment 2 of the present invention;
fig. 9 is an exploded view of embodiment 2 of the present invention;
fig. 10 is a schematic cross-sectional view of embodiment 2 of the present invention;
fig. 11 is a schematic structural view of a needle holder in embodiment 2 of the present invention;
fig. 12 is a schematic structural view of a negative pressure seat in embodiment 2 of the present invention;
fig. 13 is a schematic structural diagram of an adjustment card according to embodiment 2 of the present invention;
the reference numbers are as follows:
a needle outlet surface
1 needle stand
101 first needle tube mounting hole
102 positioning column
103 guide hole
2 shunting seat
3 negative pressure seat
301 third needle tube mounting hole
302 chute
303 negative pressure input port
304 card positioning slot
305 guide post
4 conical seat
5 adjusting knob
6 needle tube
7 negative pressure seat cover plate
8 adjusting card
801 lead-in section
802 locating hole
802a positioning hole
802b positioning hole
802c positioning hole
802d positioning hole
802e positioning hole
803 sheet body
804 connect the ribs.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings to make it clear to those skilled in the art how to practice the invention. While the invention has been described in connection with its preferred embodiments, these embodiments are intended to be illustrative, and not to limit the scope of the invention.
Example 1
Referring to fig. 2 to 4, a multi-needle injection needle with a card type needle discharging length control function comprises a needle seat 1, a shunt seat 2, a negative pressure seat 3, a conical seat 4, a needle tube 6, a negative pressure seat cover plate 7 and an adjusting card 8. The difference with the prior art is that the original adjusting knob is removed, and a negative pressure seat cover plate 7, an adjusting card 8, a connecting and matching structure between the needle seat 1 and the negative pressure seat 3 and a connecting and matching structure between the negative pressure seat 3 and the adjusting card 8 are added.
The components are explained in detail below.
The needle base 1 is provided with a cavity and a plurality of first needle tube mounting holes 101 communicated with the bottom surface of the cavity. Referring to fig. 5, a positioning column 102 is disposed on an outer side wall of one side of the needle holder 1 to cooperate with a sliding groove 302 of the negative pressure seat 3 and a clamping groove of the adjusting card 8 to achieve a needle adjusting target. Needle file 1 is installed inside negative pressure seat 3, and needle file 1 is equipped with a plurality of guiding holes 103 towards the department placed in the middle on the inside one end terminal surface of negative pressure seat 3 to cooperate with a plurality of guide posts 305 of negative pressure seat 3, realize the accurate concentric axial motion between needle file 1 and the negative pressure seat 3, and then guarantee the precision of the length of inserting needles.
The negative pressure seat 3 suit is outside needle file 1, and the one end terminal surface of negative pressure seat 3 is for going out the needle face, and the other end opening of negative pressure seat 3 is put into in order supplying needle file 1, and the one end department that is close to of negative pressure seat 3 is equipped with a plurality of third syringe mounting holes 301 that correspond with a plurality of first syringe mounting holes 101 of needle file 1. Referring to fig. 6, a set of adjacent side walls of the negative pressure seat 3 are respectively provided with a chute 302 and a negative pressure input port 303. The sliding groove 302 is matched with the positioning column 102 of the needle seat 1, specifically, the sliding groove 302 extends along the axial direction of the negative pressure seat 3 and extends to the other end face of the negative pressure seat 3, so that the negative pressure seat 3 and the positioning column 102 of the needle seat 1 can move axially relatively. The negative pressure input port 303 is used to externally connect a suction device to achieve negative pressure. The outer surface of the side wall of the negative pressure seat 3 where the sliding slot 302 is located is provided with a card positioning slot 304 for inserting the adjustment card 8, and the extending direction of the card positioning slot 304 is not limited, and preferably, as shown in the figure, the extending direction of the card positioning slot 304 is perpendicular to the extending direction of the sliding slot 302. A plurality of guide posts 305 corresponding to the plurality of guide holes 103 of the needle seat 1 are further arranged in the middle of the surface, facing the end face of one end of the needle seat 1, in the negative pressure seat 3, so that precise concentric axial movement between the negative pressure seat 3 and the needle seat 1 is realized.
A channel communicated with the flow dividing cavity is axially arranged on the conical seat 4, and one end of the channel is connected with the second flow channel.
Each needle tube 6 of the plurality of needle tubes 6 is fixed in a first needle tube mounting hole 101 of the needle base 1 and a second needle tube mounting hole of the shunt base 2 through dispensing, and penetrates through a third needle tube mounting hole 301 of the corresponding negative pressure base 3.
The negative pressure seat cover plate 7 is fixedly arranged on the opening at the other end of the negative pressure seat 3 and sleeved on the conical seat 4, and a through hole for the conical seat 4 to pass through is formed in the center of the negative pressure seat cover plate 7.
The adjusting card 8 is of a single-piece structure and is inserted into the card positioning slot 304 of the negative pressure seat 3, a plurality of clamping slots for embedding the positioning columns 102 of the needle seat 1 are arranged on the adjusting card 8, each clamping slot comprises a leading-in section 801 and a positioning hole 802, one end of the leading-in section 801 is communicated with the positioning hole 802, and the other end of the leading-in section extends to the edge of the adjusting card 8. In this embodiment, referring to fig. 7, the adjustment card 8 is a rectangular sheet, four slots are provided on the adjustment card 8, one of the slots includes a lead-in section 801 and two positioning holes 802, the other three slots include a lead-in section 801 and a positioning hole 802, and distances from five positioning holes 802 to one side edge of the adjustment card 8 in the axial direction of the negative pressure seat 3 are different and respectively correspond to five-stage needle withdrawing lengths; the needle outlet length corresponding to the positioning hole 802a enables the needle tip of the needle tube 6 to slightly extend out of the needle outlet surface of the negative pressure seat 3, the needle outlet length corresponding to the positioning hole 802e enables the needle tip of the needle tube 6 to be completely retracted inside the multi-needle injection needle head, and the needle outlet lengths corresponding to the positioning holes 802b, 802c and 802d correspond to different injection depths and need to be adjusted according to different injection conditions; the error range of the length of each needle is within 0.05 mm; the adjustment card 8 is further provided with scales (not shown in the figure) convenient to identify, and the scales mark the needle-out length corresponding to each positioning hole 802, so that the needle-out length can be conveniently and accurately calibrated.
When the length of the needle needs to be adjusted, the adjustment card 8 is pulled out from the card positioning slot 304 of the negative pressure seat 3, the adjustment card is rotated and/or the surface is changed and then inserted into the card positioning slot 304 of the negative pressure seat 3 according to the required length of the needle, so that the positioning hole 802 corresponding to the required length of the needle of the adjustment card 8 blocks the positioning column 102 of the needle seat 1, the axial movement and the positioning of the negative pressure seat 3 are realized, and the adjustment of the length of the needle is completed.
Example 2
Referring to fig. 8 to 10, a multi-needle injection needle with a card type needle discharging length control function comprises a needle seat 1, a shunt seat 2, a negative pressure seat 3, a conical seat 4, a needle tube 6, a negative pressure seat cover plate 7 and an adjusting card 8. The difference from embodiment 1 is that the needle discharging length adjusting structure of embodiment 1 adopts a single-side card type structure, only one side of the needle seat 1 is provided with the positioning column 102, only one side of the negative pressure seat 3 is provided with the sliding chute 302 and the card positioning groove 304, the adjusting card 8 is a single sheet, and the needle discharging length adjusting structure of this embodiment adopts a double-side card type structure, which is described in detail below.
Referring to fig. 11, the outer side walls of both sides of the needle base 1 are provided with positioning pillars 102.
Referring to fig. 12, the side walls of the negative pressure seat 3 are both provided with sliding grooves 302, the outer surfaces of the side walls of the negative pressure seat 3 are both provided with card positioning grooves 304, and the extending direction of the card positioning groove 304 on each side wall may preferably be perpendicular to the extending direction of the sliding groove 302 on the same side.
Referring to fig. 13, the adjustment card 8 has a dual-piece structure and is formed by two piece bodies 803 connected together by a middle connecting rib 804, the two piece bodies 803 of the adjustment card 8 are respectively inserted into the two card positioning slots 304 of the negative pressure seat 3, and the structure of each piece body 803 is as described in the adjustment card 8 of embodiment 1, which is not repeated herein.
When the length of the needle needs to be adjusted, the two sheet bodies 803 of the adjustment card 8 are pulled out from the two card positioning grooves 304 of the negative pressure seat 3, the length of the needle is taken out according to the requirement, the two card positioning grooves 304 of the negative pressure seat 3 are inserted after the needle is turned over and/or turned around, the positioning holes 802 corresponding to the length of the needle required on each sheet body 803 are used for clamping the positioning columns 102 on the same side of the needle seat 1, the axial movement and the positioning of the negative pressure seat 3 are realized, and the adjustment of the length of the needle is completed.
It should be noted that many variations and modifications of the embodiments of the present invention are possible, which are fully described, and are not limited to the specific examples of the above embodiments. The above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. In conclusion, the scope of the present invention should include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art.
Claims (10)
1. A multi-needle syringe needle with a card type needle outlet length control function comprises a needle seat, a flow dividing seat, a negative pressure seat, a conical seat and a needle tube, and is characterized in that a positioning column is arranged on the outer side wall of the needle seat, and a sliding groove which extends axially and is matched with the positioning column is formed in the side wall of the negative pressure seat; the needle-out adjusting device comprises a needle-out base, a needle-out base cover plate, an adjusting card and a needle-out base cover plate, wherein one end face of the needle-out base is a needle-out face, the other end of the needle-out base is provided with an opening, the needle-out base cover plate is provided with a conical seat which penetrates through the opening, a card positioning groove is formed in the side wall of the negative pressure base where a sliding groove is located, the adjusting card is inserted into the card positioning groove, the adjusting card is provided with a plurality of clamping grooves for embedding positioning columns of the needle base, and each clamping groove corresponds to the length of a primary needle-out; the direction and the position of the adjusting card inserted into the sliding groove of the negative pressure seat are changed, so that the clamping groove of the adjusting card corresponding to the required needle outlet length clamps the positioning column of the needle seat, the axial movement and the positioning of the negative pressure seat are realized, and the needle outlet length is controlled.
2. The card-type multi-needle injection needle head capable of controlling the needle discharging length according to claim 1, wherein each clamping groove of the adjusting card comprises a guiding section and a positioning hole, one end of the guiding section is communicated with the positioning hole, the other end of the guiding section extends to the edge of the adjusting card, the number of the positioning holes of each clamping groove is more than one, and each positioning hole corresponds to one-stage needle discharging length.
3. The card-type multi-needle injection needle head capable of controlling the needle discharge length according to claim 2, wherein the extending direction of the card positioning groove of the negative pressure seat is perpendicular to the extending direction of the sliding groove, the adjustment card comprises a sheet body, a plurality of clamping grooves are arranged on the sheet body, and the distance from the positioning hole of each clamping groove to one side edge of the sheet body in the axial direction of the negative pressure seat is different.
4. The card type multi-needle injection needle head capable of controlling the needle discharging length according to claim 1, wherein the needle seat and the negative pressure seat are respectively provided with a plurality of guide holes and a plurality of guide columns which are matched in an axial guide way.
5. The card type multi-needle injection needle head capable of controlling the length of the discharged needle according to claim 1, wherein the slide groove of the negative pressure seat extends to the other end face along the axial direction of the negative pressure seat.
6. The card-type multi-needle injection needle head for controlling the length of the discharged needle according to claim 1, wherein the card positioning groove of the negative pressure seat is located on the outer surface of the side wall where the sliding groove is located.
7. The card type multi-needle injection needle head capable of controlling the length of the discharged needle according to claim 1, wherein a through hole for the conical seat to pass through is formed at the center of the negative pressure seat cover plate.
8. The multi-needle injection needle of card-type controlling needle-out length according to claim 1, wherein the needle holder is provided with a cavity and a plurality of first needle tube mounting holes communicating with the bottom surface of the cavity, the shunt seat is installed in the cavity of the needle holder and is abutted by one end of the conical seat extending into the cavity, the shunt seat is provided with a plurality of second needle tube mounting holes corresponding to the plurality of first needle tube mounting holes, a shunt cavity is formed between the shunt seat and the conical seat, an adjusting and glue-filling cavity is formed between the shunt seat and the cavity of the needle holder, the negative pressure seat is sleeved outside the needle holder, the negative pressure seat is provided with a plurality of third needle tube mounting holes corresponding to the plurality of first needle tube mounting holes and a negative pressure input port, the conical seat passes through a negative pressure seat cover plate, the conical seat is provided with a channel communicating with the shunt cavity, each needle tube of the plurality of needle tubes is fixed in the first needle tube mounting holes and the second needle tube mounting holes, and is arranged in the third needle tube mounting hole in a penetrating way.
9. The card type multi-needle injection needle head capable of controlling the needle discharging length according to any one of claims 1 to 8, wherein the adjusting card is of a single-piece structure, a positioning column is arranged on the outer side wall of one side of the needle seat, and a sliding groove and a card positioning groove are arranged on the side wall of one side of the negative pressure seat.
10. The multi-needle injection needle head with the card type needle discharging length controlled according to any one of claims 1 to 8, wherein the adjusting card is a double-sheet structure formed by two sheet bodies connected into a whole through a middle connecting rib, each sheet body is provided with a plurality of clamping grooves, the outer side walls of two sides of the needle seat are provided with positioning columns, and the side walls of two sides of the negative pressure seat are provided with sliding grooves and card positioning grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120319451.7U CN215194586U (en) | 2021-02-04 | 2021-02-04 | Card type multi-needle injection needle head capable of controlling needle outlet length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120319451.7U CN215194586U (en) | 2021-02-04 | 2021-02-04 | Card type multi-needle injection needle head capable of controlling needle outlet length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215194586U true CN215194586U (en) | 2021-12-17 |
Family
ID=79439805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120319451.7U Active CN215194586U (en) | 2021-02-04 | 2021-02-04 | Card type multi-needle injection needle head capable of controlling needle outlet length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215194586U (en) |
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2021
- 2021-02-04 CN CN202120319451.7U patent/CN215194586U/en active Active
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