CN114344617A - Auxiliary needle inserting device for pasting type continuous subcutaneous drug delivery system - Google Patents
Auxiliary needle inserting device for pasting type continuous subcutaneous drug delivery system Download PDFInfo
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- CN114344617A CN114344617A CN202210037053.5A CN202210037053A CN114344617A CN 114344617 A CN114344617 A CN 114344617A CN 202210037053 A CN202210037053 A CN 202210037053A CN 114344617 A CN114344617 A CN 114344617A
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- needle
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Abstract
The invention discloses an auxiliary needle inserting device for an application type continuous subcutaneous drug delivery system, and relates to the field of medical instruments. The invention comprises a bottom sleeve, an ejection needle-inserting guide cylinder which is sleeved in the bottom sleeve and the inner side wall of which is symmetrically provided with a plurality of guide beams, a plurality of wedge-shaped beams which are vertically arranged at the bottom of the ejection needle-inserting guide cylinder in a surrounding manner, a puncture steel needle extraction guide cylinder of which the outer part is sleeved with an injection power spring fixedly connected with the inner bottom of the bottom sleeve, an injection indwelling soft needle base which is provided with an opening guide groove at the end part of a base main body in a surrounding manner, a connecting limit column and a puncture steel needle. The device provided by the invention has an exquisite structure, can realize that the puncture steel needle is selected to be pulled out of the guide cylinder to trigger the puncture needle insertion action, the puncture steel needle is automatically pulled out after the puncture is in place, the injection soft needle is kept at the injection part, the small built-in automatic needle insertion of the application type continuous subcutaneous drug delivery system is realized, the pollution is avoided, the pain is reduced, and the psychological fear of a user is reduced.
Description
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to an auxiliary needle inserting device for an application type continuous subcutaneous drug delivery system.
Background
In clinical treatment of the present day, it is often encountered that some diseases need to be treated by uninterruptedly timing and quantitative administration to a patient, for example, when treating a diabetic patient, the patient needs to be injected with insulin regularly and quantitatively. The existing continuous injection remaining needle has more structural types and mainly comprises a manual needle inserting structure and an automatic auxiliary needle inserting structure. The invention patent with the name of automatic needle inserting and assisting device for injection needle is disclosed as the patent with the application number of 202110399541.6; for another example, the patent is an invention patent with application number 202110251645.2 named as an adsorption knob needle assisting device and an appearance design patent with application number 202130309083.3 named as a needle assisting device. The inconvenient and certain training of needs of current manual needle inserting operation is felt with overcoming the psychological fear of oneself to expose in outside pjncture needle and easily cause pollution and secondary damage, and current automatic needle inserting structure is mostly external stand alone type, has complex operation, easily pollutes, and is bulky, and the structure is complicated, and the reliability is relatively poor, causes the problem of accident easily. Therefore, in view of the above problems, it is of particular importance to provide an auxiliary needle insertion device for an application-type continuous subcutaneous drug delivery system.
Disclosure of Invention
The invention provides an auxiliary needle inserting device for an application type continuous subcutaneous drug delivery system, which solves the problems.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to an auxiliary needle inserting device for an application type continuous subcutaneous drug delivery system, which comprises:
a bottom sleeve;
ejecting the needle inserting guide cylinder: the ejection needle inserting guide sleeve is sleeved in the bottom sleeve, and the inner side wall is symmetrically provided with a plurality of guide beams and a plurality of wedge-shaped beams are vertically arranged at the bottom of the ejection needle inserting guide sleeve in a surrounding manner;
the puncture steel needle is pulled out of the guide cylinder: the injection power spring is vertically arranged at the center of the bottom in the bottom sleeve, the outside of the injection power spring is sleeved with the injection power spring fixedly connected with the bottom in the bottom sleeve, the outer periphery side of the injection power spring is symmetrically provided with a plurality of guide open slots and embedded buckle limiting slots, and the end part of the injection power spring is provided with a bayonet corresponding to the guide open slots;
injection indwelling soft needle base: the puncture needle extraction guide cylinder comprises a circular base main body, an outer convex ring which is arranged at the end part of the base main body and is provided with an opening guide groove in a surrounding manner, a remaining hollow soft needle which is arranged at the end part of the base main body and penetrates through the center position, and connecting limiting columns which are symmetrically and vertically arranged at the bottom of the base main body in a surrounding manner and are sleeved at the outer side part of the puncture steel needle extraction guide cylinder; the bottom of the limiting column is provided with a convex limiting buckle matched with the embedded buckle limiting groove; the surface of the injection indwelling soft needle base is provided with a plurality of positioning guide holes corresponding to the wedge-shaped beam after rotation;
puncturing a steel needle: run through base main part tip and corresponding with keeping somewhere hollow soft needle, the bottom is extracted the guide cylinder and is cooperated with the puncture steel needle through spacing buckle and spacing post, makes the space of centre gripping between bayonet socket and adjacent spacing post clearance under the initial condition, is located to overlap between spacing buckle and the base main part and is equipped with puncture steel needle and extracts auxiliary spring.
Furthermore, the limiting buckle is of a limiting block structure with lugs arranged on the periphery side at equal intervals in a surrounding mode, and the lugs correspond to the bayonets and the spaces between adjacent limiting column gaps in position and number.
Furthermore, the center position of the ejection needle insertion guide cylinder is provided with a center hole corresponding to the hollow soft needle and the puncture steel needle.
Further, the wedge-shaped beam is arranged at the bottom in the ejection needle insertion guide cylinder, the opening guide groove is aligned with the guide beam after the puncture steel needle is pulled out of the guide cylinder, and when the puncture steel needle is prepared for puncture, the puncture steel needle is pulled out of the guide cylinder, the wedge-shaped beam from the bottom of the ejection needle insertion guide cylinder is mutually pushed by the lug to enable the limiting buckle to rotate, so that the lug enters the guide opening groove.
Furthermore, the injection power spring and the puncture steel needle extraction auxiliary spring are in compressed states in the initial state.
Compared with the prior art, the invention has the following beneficial effects:
the device provided by the invention has an exquisite structure, can realize that the puncture steel needle is selected to be pulled out of the guide cylinder to trigger the puncture needle insertion action, the puncture steel needle is automatically pulled out after the puncture is in place, the injection soft needle is kept at the injection part, the small built-in automatic needle insertion of the application type continuous subcutaneous drug delivery system is realized, the pollution is avoided, the pain is reduced, and the psychological fear of a user is reduced.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an exploded view of an auxiliary needle insertion device for an application type continuous subcutaneous drug delivery system according to the present invention;
FIG. 2 is a view showing the relationship between the pulling guide cylinder of the puncture steel needle and the base of the injection indwelling soft needle and the puncture steel needle in FIG. 1;
FIG. 3 is a schematic structural view of the limit buckle in FIG. 2;
FIG. 4 is a front view of the injection indwelling soft needle base of FIG. 1;
FIG. 5 is a schematic view of the ejector pin guide of FIG. 1;
FIG. 6 is a schematic view showing the combination of the injection indwelling soft needle base, the indwelling hollow soft needle, the puncture steel needle withdrawal guide cylinder and the puncture steel needle;
FIG. 7 is a schematic view showing the position and structure of the assembly of the injection indwelling soft needle base, the indwelling hollow soft needle, the puncture steel needle extraction guide cylinder, the limiting buckle and the puncture steel needle in the state ready for puncture;
FIG. 8 is a state diagram of the position of the opening guide groove on the base of the injection indwelling soft needle and the position of the guide beam inside the catapulting needle insertion guide cylinder in the ready-to-puncture state and the guide beam propping against the base of the injection indwelling soft needle;
FIG. 9 is a structural view showing that the opening guide groove on the base of the injection indwelling soft needle is aligned with the guide beam in the ejection needle-inserting guide cylinder and pushed to the bottom by the injection power spring after the rotary puncture steel needle is pulled out of the guide cylinder when puncture is required;
FIG. 10 is a view showing the state where the projection of the stopper button is located at the bayonet position of the puncture needle withdrawing guide cylinder when the puncture is ready;
FIG. 11 is a view showing a state that the projection of the stopper clip enters the opening guide groove of the puncture steel needle withdrawing guide cylinder and then pushes the stopper clip to move to the bottom of the puncture steel needle withdrawing guide cylinder to complete the action of withdrawing the steel needle and to retain the retained hollow soft needle subcutaneously;
in the drawings, the components represented by the respective reference numerals are listed below:
100-ejection needle insertion guide cylinder, 101-center hole, 102-guide beam, 103-wedge beam, 201-injection remaining soft needle base, 202-remaining hollow soft needle, 203-opening guide groove, 204-limit column, 205-protrusion limit button, 206-positioning guide hole, 300-puncture steel needle extraction guide cylinder, 301-limit buckle, 3011-lug, 302-puncture steel needle extraction auxiliary spring, 303-puncture steel needle, 401-bayonet, 402-embedded buckle limit groove, 403-guide open groove, 500-bottom sleeve and 501-injection power spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "bottom", "inside", "vertical", "inner bottom", "inner", "end", and the like, indicate orientations or positional relationships for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-11, an auxiliary needle insertion device for a patch-type continuous subcutaneous drug delivery system according to the present invention comprises:
a bottom sleeve 500;
ejection needle insertion guide cylinder 100: the ejector pin is sleeved in the bottom sleeve 500, the inner side wall of the ejector pin is symmetrically provided with a plurality of guide beams 102, and a plurality of wedge-shaped beams 103 are vertically arranged at the bottom of the ejector pin guide cylinder 100 in a surrounding manner, in the specific embodiment, the number of the guide beams 102 and the number of the wedge-shaped beams 103 are four, and the adjacent distances are equal;
puncture steel needle extraction guide cylinder 300: the injection power spring 501 is vertically arranged at the center of the inner bottom of the bottom sleeve 500, the injection power spring is sleeved outside and fixedly connected with the inner bottom of the bottom sleeve 500, a plurality of guide open grooves 403 and embedded buckle limiting grooves 402 are symmetrically arranged on the outer peripheral side, and bayonets 401 corresponding to the guide open grooves 403 are arranged at the end parts of the guide open grooves;
injection indwelling soft needle base 201: comprises a circular base body, an outer convex ring which is arranged at the end part of the base body and is provided with an opening guide groove 203 in a surrounding way, a remaining hollow soft needle 202 which is arranged at the end part of the base body and passes through the central position, and a connecting limiting column 204 which is symmetrically and vertically arranged at the bottom of the base body in a surrounding way and is sleeved at the outer side part of a puncture steel needle extraction guide cylinder 300; the bottom of the limiting column 204 is provided with a raised limiting buckle 205 matched with the embedded buckle limiting groove 402; the surface of the injection indwelling soft needle base 201 is provided with a plurality of positioning guide holes 206 corresponding to the wedge-shaped beam 103 after rotating;
piercing steel needle 303: the auxiliary spring 302 for pulling out the puncture steel needle is sleeved between the limiting buckle 301 and the base body;
in this embodiment, the bottom sleeve 500, the ejection needle insertion guide cylinder 100, the puncture steel needle extraction guide cylinder 300, and the injection indwelling soft needle base 201 are all made of medical grade plastics.
The limiting buckle 301 adopts a limiting block structure with a protruding block 3011 arranged around the outer periphery at equal intervals, the protruding block 3011 corresponds to the bayonet 401 and the space between the adjacent limiting columns 204 in position and number, and the number of the protruding blocks 3011 in this specific embodiment is specifically 4.
Wherein, the center position of the ejection needle-inserting guide cylinder 100 is provided with a center hole 101 corresponding to the hollow soft needle 202 and the puncture steel needle 303.
The wedge-shaped beam 103 is bent at the end of the guide beam 102, so that after the guide groove 203 enters the wedge-shaped beam 103, the limiting buckle 301 is driven to deflect and is rebounded and pulled out by the guide open groove 403.
The wedge-shaped beam 103 is arranged at the bottom in the ejector needle inserting guide cylinder 100, the opening guide groove 203 is aligned with the guide beam 102 after the puncture steel needle is pulled out of the guide cylinder 300, and when the puncture steel needle is ready to be punctured, the wedge-shaped beam 103 from the puncture steel needle pulling-out guide cylinder 300 to the bottom of the ejector needle inserting guide cylinder 100 is pushed and pushed with the bump 3011 to enable the limiting buckle 301 to rotate, so that the bump 3011 enters the guide opening groove 403.
The injection power spring 501 and the puncture needle extraction auxiliary spring 302 are both in a compressed state in their initial states.
In the embodiment, the height of the needle is about 10mm and the diameter of the needle is less than 15mm at the puncture depth of 7mm, the needle can be completely accommodated in the application type infusion device, and the total number of the elements is 7, wherein the two elements of the ejection needle guide cylinder 100 and the bottom sleeve 500 can be directly fused in a shell of the application type infusion device, and the functions of puncturing, pulling out a steel needle and retaining an injection soft needle can be automatically completed by means of other 5 elements in a sterile state without damaging the device.
As shown in fig. 8, in preparation for the puncture state, the guide beam 102 ejected into the needle guide cylinder 100 and the open guide groove 203 of the injection indwelling soft needle base 201 are at the same time, and the guide beam 102 is pressed against the injection indwelling soft needle base 201;
as shown in fig. 9, when puncture is needed, after the puncture steel needle is rotated to pull out the guide cylinder 300, the open guide groove 202 on the injection indwelling soft needle base 201 is aligned with the guide beam 102 inside the ejection needle guide cylinder 100 and pushed to the bottom by the injection power spring 501;
as shown in fig. 10, in order to prepare for puncturing, the state diagram of the guide beam 102 of the position-limiting buckle 301 at the position of the bayonet 401 in the puncturing steel needle extracting guide cylinder 300 is shown, after the combined body shown in fig. 6 reaches the bottom of the ejector needle guide cylinder 100, the wedge-shaped beam 103 at the bottom of the ejector needle guide cylinder 100 and the guide beam 102 push each other to rotate the position-limiting buckle 301, so that the guide beam 102 enters the open guide groove 203 of the puncturing steel needle extracting guide cylinder 300;
as shown in fig. 11, once the protrusion 3011 of the limit buckle 301 enters the opening guide slot 203 of the puncture needle extraction guide cylinder 300, the limit buckle 301 is pushed to move to the bottom of the puncture needle extraction guide cylinder 300 to complete the needle extraction action, and the wedge-shaped beam 103 of the catapult needle guide cylinder 100 penetrates out of the central circular hole position corresponding to the indwelling hollow soft needle 202 of the injection indwelling soft needle base 201.
The working principle of the invention is as follows:
when in a ready puncturing state, the puncturing steel needle 303 is in the indwelling hollow soft needle 202, the puncturing steel needle extraction auxiliary spring 302 is blocked by the limiting buckle 301 and compressed at the bottom of the injection indwelling soft needle base 201, the puncturing steel needle extraction guide cylinder 300 is locked with the injection indwelling soft needle base 201 through the buckle, and the limiting buckle 301 and the puncturing steel needle extraction auxiliary spring 302 are pushed by a bayonet at the bottom of the puncturing steel needle extraction guide cylinder 300. A guide beam 02 is arranged on the inner wall of the cylinder of the ejection needle guide cylinder 100 and can be matched with an opening guide groove 203 on the injection remaining soft needle base 201, the guide beam 102 is not arranged in the opening guide groove 203 at the beginning, and the opening guide groove 203 clamps the injection remaining soft needle base 201 to be positioned at the top end of the ejection needle guide cylinder 100.
When the puncture needle is inserted, the puncture steel needle extraction guide cylinder 300 is rotated to enable the guide beam 102 of the ejection needle insertion guide cylinder 100 to enter the opening guide groove 203 of the injection remaining soft needle base 201, the injection power spring 501 can rapidly push the puncture steel needle extraction guide cylinder 300 and the injection remaining soft needle base 201 assembly to move to the bottom end of the ejection needle insertion guide cylinder 100, the puncture steel needle 303 and the remaining hollow soft needle 202 are also inserted into the skin, when the limiting buckle 301 reaches the bottom of the ejection needle guide cylinder 100 along with the puncture steel needle extraction guide cylinder 300, the limiting buckle 301 rotates under the action of the wedge-shaped beam 103 at the bottom of the ejection needle guide cylinder 100 to enable the bump 3011 of the limiting buckle 301 to leave the bayonet 401 of the puncture steel needle extraction guide cylinder 300 and enter the guide open slot 403, the puncture steel needle extraction auxiliary spring 302 pushes the limiting buckle 301 to move towards the top end of the puncture steel needle extraction guide cylinder 300 to extract the puncture steel needle 303, and the indwelling hollow soft needle 202 is indwelling under the skin.
Has the advantages that:
the device provided by the invention has an exquisite structure, can realize that the puncture steel needle is selected to be pulled out of the guide cylinder to trigger the puncture needle insertion action, the puncture steel needle is automatically pulled out after the puncture is in place, the injection soft needle is kept at the injection part, the small built-in automatic needle insertion of the application type continuous subcutaneous drug delivery system is realized, the pollution is avoided, the pain is reduced, and the psychological fear of a user is reduced.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. An auxiliary needle insertion device for an application type continuous subcutaneous drug delivery system, comprising:
a bottom sleeve (500);
ejection needle insertion guide cylinder (100): the ejection needle inserting guide cylinder is sleeved in the bottom sleeve (500), the inner side wall of the ejection needle inserting guide cylinder is symmetrically provided with a plurality of guide beams (102), and a plurality of wedge-shaped beams (103) are vertically arranged at the bottom of the ejection needle inserting guide cylinder (100) in a surrounding manner;
puncture steel needle extraction guide cylinder (300): the injection power spring is vertically arranged at the center of the inner bottom of the bottom sleeve (500), the outside of the injection power spring is sleeved with an injection power spring (501) fixedly connected with the inner bottom of the bottom sleeve (500), the outer periphery side of the injection power spring is symmetrically provided with a plurality of guide open grooves (403) and embedded buckle limiting grooves (402), and the end part of the injection power spring is provided with a bayonet (401) corresponding to the guide open grooves (403);
injection indwelling soft needle base (201): comprises a round base body, an outer convex ring which is arranged at the end part of the base body and is provided with an opening guide groove (203) in a surrounding way, a remaining hollow soft needle (202) which is arranged at the end part of the base body and passes through the central position, and a connecting limiting column (204) which is symmetrically and vertically arranged at the bottom part of the base body in a surrounding way and is sleeved at the outer side part of a puncture steel needle extraction guide cylinder (300); the bottom of the limiting column (204) is provided with a raised limiting buckle (205) matched with the embedded buckle limiting groove (402), and the surface of the injection indwelling soft needle base (201) is provided with a plurality of positioning guide holes (206) corresponding to the wedge-shaped beam (103) after rotation;
piercing steel needle (303): run through base main part tip and corresponding with keeping somewhere hollow soft needle (202), the bottom is through spacing buckle (301) and puncture steel needle extraction guide cylinder (300) and spacing post (204) and cooperate, makes the space of centre gripping between bayonet socket (401) and adjacent spacing post (204) clearance under the initial condition, is located to overlap between spacing buckle (301) and the base main part and is equipped with puncture steel needle and extracts auxiliary spring (302).
2. The auxiliary needle inserting device for the application type continuous subcutaneous drug delivery system is characterized in that the limiting buckle (301) adopts a limiting block structure that the periphery side is provided with lugs (3011) at equal intervals in a surrounding mode, and the positions and the number of the lugs (3011) correspond to the positions and the number of the bayonets (401) and the spaces between the gaps of the adjacent limiting columns (204).
3. The auxiliary needle inserting device for the application type continuous subcutaneous drug delivery system as claimed in claim 1, wherein the central position of the ejection needle inserting guide cylinder (100) is provided with a central hole (101) corresponding to the hollow soft needle (202) and the puncture steel needle (303).
4. The auxiliary needle inserting device for the application type continuous subcutaneous drug delivery system is characterized in that the wedge-shaped beam (103) is arranged at the bottom in the ejection needle inserting guide cylinder (100), the opening guide groove (203) of the puncture steel needle extracting guide cylinder (300) is aligned with the guide beam (102), and when the puncture steel needle extracting guide cylinder (300) is ready for puncture, the wedge-shaped beam (103) at the bottom of the ejection needle inserting guide cylinder (100) and the lug (3011) are pushed mutually to enable the limiting buckle (301) to rotate, so that the lug (3011) enters the guide opening groove (403).
5. An auxiliary needle insertion device for an application type continuous subcutaneous drug delivery system according to claim 1, characterized in that the injection power spring (501) and the puncture steel needle extraction auxiliary spring (302) are compressed in the initial state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210037053.5A CN114344617B (en) | 2022-01-13 | 2022-01-13 | Auxiliary needle insertion device for application type continuous subcutaneous drug delivery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210037053.5A CN114344617B (en) | 2022-01-13 | 2022-01-13 | Auxiliary needle insertion device for application type continuous subcutaneous drug delivery system |
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| Publication Number | Publication Date |
|---|---|
| CN114344617A true CN114344617A (en) | 2022-04-15 |
| CN114344617B CN114344617B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210037053.5A Active CN114344617B (en) | 2022-01-13 | 2022-01-13 | Auxiliary needle insertion device for application type continuous subcutaneous drug delivery system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011045533A (en) * | 2009-08-27 | 2011-03-10 | Mitsubishi Pencil Co Ltd | Indwelling needle syringe |
| WO2012108955A2 (en) * | 2011-02-09 | 2012-08-16 | Becton, Dickinson And Company | Subcutaneous infusion device |
| CN208626298U (en) * | 2018-03-01 | 2019-03-22 | 昆明医科大学第一附属医院 | A kind of pleural effusion puncture drainage remaining needle |
| CN111001057A (en) * | 2018-10-08 | 2020-04-14 | 普昂(杭州)医疗科技有限公司 | Application type subcutaneous indwelling needle |
-
2022
- 2022-01-13 CN CN202210037053.5A patent/CN114344617B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011045533A (en) * | 2009-08-27 | 2011-03-10 | Mitsubishi Pencil Co Ltd | Indwelling needle syringe |
| WO2012108955A2 (en) * | 2011-02-09 | 2012-08-16 | Becton, Dickinson And Company | Subcutaneous infusion device |
| CN208626298U (en) * | 2018-03-01 | 2019-03-22 | 昆明医科大学第一附属医院 | A kind of pleural effusion puncture drainage remaining needle |
| CN111001057A (en) * | 2018-10-08 | 2020-04-14 | 普昂(杭州)医疗科技有限公司 | Application type subcutaneous indwelling needle |
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| Publication number | Publication date |
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| CN114344617B (en) | 2023-09-22 |
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