CN114344617B - Auxiliary needle insertion device for application type continuous subcutaneous drug delivery system - Google Patents
Auxiliary needle insertion device for application type continuous subcutaneous drug delivery system Download PDFInfo
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- CN114344617B CN114344617B CN202210037053.5A CN202210037053A CN114344617B CN 114344617 B CN114344617 B CN 114344617B CN 202210037053 A CN202210037053 A CN 202210037053A CN 114344617 B CN114344617 B CN 114344617B
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Abstract
The invention discloses an auxiliary needle insertion device for an application type continuous subcutaneous drug delivery system, and relates to the field of medical appliances. The invention comprises a bottom sleeve, a plurality of guide beams sleeved in the bottom sleeve, a ejection needle feeding guide cylinder vertically surrounding the bottom of the ejection needle feeding guide cylinder and provided with a plurality of wedge beams, a puncture steel needle pulling guide cylinder externally sleeved with an injection power spring fixedly connected with the bottom of the bottom sleeve, an injection remaining soft needle base with a base main body end part and surrounding an opening guide groove and provided with a connecting limit column, and a puncture steel needle. The device has exquisite structure, can realize the selection of the puncture steel needle to pull out the guide cylinder to trigger the puncture needle insertion action, automatically pull out the puncture steel needle after the puncture is in place, and keep the injection soft needle at the injection position, thereby realizing the small built-in automatic needle insertion of the adhesive continuous subcutaneous drug delivery system, avoiding pollution, reducing pain and reducing psychological fear of users.
Description
Technical Field
The invention belongs to the field of medical appliances, and particularly relates to an auxiliary needle insertion device for an adhesive continuous subcutaneous drug delivery system.
Background
In the clinical treatment of today, it is often encountered that continuous, timed and quantitative administration of insulin to a patient is required during the course of treatment, such as the treatment of diabetics. The existing continuous injection indwelling needle has a plurality of structure types and mainly comprises a manual needle insertion structure and an automatic auxiliary needle insertion structure. The invention patent with the application number of 202110399541.6 is named as an automatic needle insertion aid for an injection needle; for example, the application number is 202110251645.2, the name is an invention patent of an adsorption knob needle aid and the application number is 202130309083.3, and the name is an appearance design patent of the needle aid. The existing manual needle insertion operation is inconvenient, certain training and psychological fear of the user are needed to be overcome, the external puncture needle is exposed to easily cause pollution and secondary injury, the existing automatic needle insertion structure is mostly external and independent, and the problems of complex operation, easy pollution, large volume, complex structure, poor reliability and easy accident initiation exist. Thus, in view of the above problems, it is of particular importance to provide an auxiliary needle insertion device for an applied continuous subcutaneous drug delivery system.
Disclosure of Invention
The invention provides an auxiliary needle insertion device for an adhesive 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:
an auxiliary needle insertion device for an adhesive continuous subcutaneous drug delivery system of the present invention includes:
a bottom sleeve;
ejection needle insertion guide cylinder: the guide beams are symmetrically arranged on the inner side wall of the bottom sleeve, and a plurality of wedge beams are vertically arranged around the bottom of the ejection needle inlet guide cylinder;
the puncture steel needle is pulled out of the guide cylinder: the injection power spring is sleeved outside the injection power spring and fixedly connected with the inner bottom of the bottom sleeve, a plurality of guide open grooves and embedded buckle limit grooves are symmetrically formed in the outer peripheral side of the injection power spring, and bayonets corresponding to the guide open grooves are formed in the end parts of the injection power spring;
injection indwelling soft needle base: the device comprises a round base main body, an outer convex ring arranged at the end part of the base main body and encircling the open guide groove, a remaining hollow soft needle arranged at the end part of the base main body and penetrating through the center position, and a connecting limit column symmetrically and vertically encircling the bottom of the base main body and sleeved on the outer side part of a puncture steel needle pulling 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 retaining soft needle base is provided with a plurality of positioning guide holes corresponding to the rotated wedge beam;
puncture steel needle: the bottom of the base is matched with the puncture steel needle pulling guide cylinder and the limiting column through the limiting buckle, so that the base is clamped in a space between the bayonet and an adjacent limiting column gap in an initial state, and a puncture steel needle pulling auxiliary spring is sleeved between the limiting buckle and the base main body.
Further, the limiting buckle adopts a limiting block structure with the peripheral side provided with protruding blocks in a surrounding equidistant mode, and the protruding blocks correspond to the positions and the number of the bayonets and the spaces between the adjacent limiting column gaps.
Further, a center hole corresponding to the hollow soft needle and the puncture steel needle is formed in the center position of the ejection needle feeding guide cylinder.
Further, the wedge beam is arranged at the inner bottom of the ejection needle-feeding 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 puncture is prepared, the puncture steel needle is pulled out of the guide cylinder until the wedge beam and the lug at the bottom of the ejection needle-feeding guide cylinder are pushed mutually to enable the limit buckle to rotate, so that the lug enters the guide opening groove.
Further, the initial state of the injection power spring and the puncture steel needle pulling auxiliary spring is a compressed state.
Compared with the prior art, the invention has the following beneficial effects:
the device has exquisite structure, can realize the selection of the puncture steel needle to pull out the guide cylinder to trigger the puncture needle insertion action, automatically pull out the puncture steel needle after the puncture is in place, and keep the injection soft needle at the injection position, thereby realizing the small built-in automatic needle insertion of the adhesive continuous subcutaneous drug delivery system, avoiding pollution, reducing pain and reducing psychological fear of users.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of the structure of an auxiliary needle insertion device for an applied continuous subcutaneous drug delivery system according to the present invention;
FIG. 2 is a diagram showing the assembled structure of the puncture steel needle extraction guide cylinder and the injection retention soft needle base in FIG. 1, and the puncture steel needle;
FIG. 3 is a schematic view of the limiting 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 ejection needle guide cylinder 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 pull-out guide cylinder and the puncture steel needle;
FIG. 7 is a schematic view showing the position and structure of the combination of the injection indwelling soft needle base, the indwelling hollow soft needle, the puncture steel needle withdrawal guiding cylinder, the limiting buckle and the puncture steel needle in preparation for the puncture state;
FIG. 8 is a state diagram of the position of the open guide slot on the injection indwelling soft needle base and the guide beam inside the ejector pin guide cylinder and the guide Liang Dingzhu injection indwelling soft needle base in preparation for the puncture state;
FIG. 9 is a view showing the arrangement of the injection retention soft needle base with the open guide slot aligned with the guide beam in the ejection needle 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 the puncture is needed;
FIG. 10 is a state diagram of the tab of the buckle in the bayonet position of the steel needle withdrawal guide cylinder in preparation for lancing;
FIG. 11 is a state diagram showing the movement of the limiting buckle to the bottom of the puncture steel needle pulling guide cylinder to complete the steel needle pulling action and leave the hollow soft needle under the skin after the lug of the limiting buckle enters the opening guide groove of the puncture steel needle pulling guide cylinder;
in the drawings, the list of components represented by the various numbers is as follows:
100-catapulting needle-inserting guide cylinder, 101-center hole, 102-guide beam, 103-wedge beam, 201-injection indwelling soft needle base, 202-indwelling hollow soft needle, 203-opening guide slot, 204-limit column, 205-protruding limit buckle, 206-positioning guide hole, 300-piercing steel needle-drawing guide cylinder, 301-limit buckle, 3011-bump, 302-piercing steel needle-drawing auxiliary spring, 303-piercing steel needle, 401-bayonet, 402-embedded buckle limit slot, 403-guiding opening slot, 500-bottom sleeve and 501-injection power spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "bottom," "inside," "vertical," "inner bottom," "interior," "end," and the like indicate an orientation or a positional relationship, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-11, an auxiliary needle insertion device for an adhesive continuous subcutaneous drug delivery system of the present invention comprises:
a bottom sleeve 500;
ejector pin guide cartridge 100: the guide beams 102 are symmetrically arranged on the inner side wall of the bottom sleeve 500, and a plurality of wedge beams 103 are vertically and circumferentially arranged at the bottom of the ejection needle inlet guide cylinder 100, and in the embodiment, the number of the guide beams 102 and the wedge beams 103 is four, and the adjacent intervals are equal;
puncture steel needle extraction guide cylinder 300: the injection power spring 501 is vertically arranged at the center position in the bottom sleeve 500, fixedly connected with the bottom in the bottom sleeve 500 is sleeved outside, a plurality of guide open grooves 403 and embedded buckle limit grooves 402 are symmetrically arranged on the outer periphery side, and bayonets 401 corresponding to the guide open grooves 403 are arranged at the end parts;
injection indwelling soft needle base 201: the puncture needle pulling guide cylinder 300 comprises a circular base body, an outer convex ring which is arranged at the end part of the base body and surrounds an opening guide groove 203, a remaining hollow soft needle 202 which is arranged at the end part of the base body and penetrates through the center position, and a connecting limiting column 204 which is symmetrically and vertically arranged at the bottom of the base body in a surrounding manner and is sleeved on the outer side part of the puncture needle pulling guide cylinder 300; the bottom of the limiting column 204 is provided with a convex limiting buckle 205 matched with the embedded buckle limiting groove 402; the surface of the injection retaining soft needle base 201 is provided with a plurality of positioning guide holes 206 corresponding to the rotation of the wedge beam 103;
puncture steel needle 303: the bottom of the base body penetrates through the end part of the base body and corresponds to the left hollow soft needle 202, the bottom of the base body is matched with the puncture steel needle pulling guide cylinder 300 and the limiting column 204 through the limiting buckle 301, so that the base body is clamped in a space between a bayonet 401 and a gap between the adjacent limiting column 204 in an initial state, and a puncture steel needle pulling auxiliary spring 302 is sleeved between the limiting buckle 301 and the base body;
in this embodiment, the bottom sleeve 500, the ejector pin guide cylinder 100, the puncture steel pin extraction guide cylinder 300, and the injection retention soft needle base 201 are all made of medical grade plastics.
The limiting buckle 301 adopts a limiting block structure that a lug 3011 is arranged on the outer peripheral side in a surrounding equidistant manner, the positions and the number of the lug 3011 and the bayonet 401 and the space between the adjacent limiting columns 204 are corresponding, and the number of the lug 3011 in the embodiment is specifically 4.
Wherein, the center of the ejection needle guide cylinder 100 is provided with a center hole 101 corresponding to the hollow soft needle 202 and the puncture steel needle 303.
Wherein, the wedge beam 103 bends at the end of the guide beam 102, so that the guide groove 203 drives the limit buckle 301 to deflect and rebound and pull out from the guide opening groove 403 after entering the wedge beam 103.
Wherein, the wedge beam 103 is arranged at the inner bottom of the ejection needle-feeding guide cylinder 100, the opening guide groove 203 and the guide beam 102 are aligned after the puncture steel needle is pulled out of the guide cylinder 300, when the puncture steel needle is pulled out of the guide cylinder 300 to the bottom of the ejection needle-feeding guide cylinder 100, the wedge beam 103 and the bump 3011 are pushed mutually to make the limit buckle 301 rotate, so that the bump 3011 enters the guide opening groove 403.
The initial state of the injection power spring 501 and the puncture steel needle extraction auxiliary spring 302 is a compressed state.
In this embodiment, the height of the device is about 10mm and the diameter of the device is less than 15mm at a puncture depth of 7mm, the device can be completely contained in the patch type infusion device, and the device comprises a total of 7 elements, wherein the two elements of the ejection needle inlet guide cylinder 100 and the bottom sleeve 500 can be directly fused into a shell of the patch 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 the other 5 elements under the condition that the sterile state of the device is not damaged.
As shown in fig. 8, in the preparation for the puncture state, the guide beam 102 is ejected into the guide cylinder 100 and the injection indwelling soft needle base 201 is positioned in the open guide groove 203, and the guide beam 102 is pushed against the injection indwelling soft needle base 201;
as shown in fig. 9, when the puncture is needed, the open guide groove 202 on the injection retention soft needle base 201 is aligned with the guide beam 102 in the ejection needle guide cylinder 100 after the rotary puncture steel needle is pulled out of the guide cylinder 300 and is pushed to the bottom by the injection power spring 501;
as shown in fig. 10, in the state diagram of the position of the bayonet 401 in the puncture steel needle drawing guide cylinder 300 of the guide beam 102 of the limit buckle 301 when preparing for puncture, the wedge beam 103 and the guide beam 102 at the bottom of the ejection needle feeding guide cylinder 100 push and push each other to rotate the limit buckle 301 after the assembly shown in fig. 6 is ejected to the bottom of the ejection needle feeding guide cylinder 100, so that the guide beam 102 enters the opening guide groove 203 of the puncture steel needle drawing guide cylinder 300;
as shown in fig. 11, once the bump 3011 of the limit buckle 301 enters the opening guide slot 203 of the puncture steel needle extraction guide cylinder 300, the limit buckle 301 is pushed to move to the bottom of the puncture steel needle extraction guide cylinder 300 to complete the steel needle extraction action, and the wedge beam 103 of the ejection needle insertion guide cylinder 100 penetrates out from the position of the central round hole corresponding to the hollow soft needle 202 of the injection retention soft needle base 201.
The working principle of the invention is as follows:
when the puncture steel needle 303 is in the hollow soft needle 202 in preparation for puncture, the puncture steel needle extraction auxiliary spring 302 is blocked by the limit buckle 301 and compressed at the bottom of the soft needle base 201 for injection, the puncture steel needle extraction guide cylinder 300 is locked with the soft needle base 201 for injection through the buckle, and the limit buckle 301 and the puncture steel needle extraction auxiliary spring 302 are pushed by the bayonet at the bottom of the puncture steel needle extraction guide cylinder 300. The guide beam 02 is provided on the inner wall of the cylinder of the ejection needle guide cylinder 100 and can be matched with the opening guide groove 203 on the injection retaining soft needle base 201, the guide beam 102 is not positioned in the opening guide groove 203 initially, and the opening guide groove 203 clamps the injection retaining 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 pulling-out guide cylinder 300 is rotated to enable the guide beam 102 of the puncture steel needle pulling-out guide cylinder 100 to enter the opening guide groove 203 of the injection retention soft needle base 201, the injection power spring 501 can rapidly push the puncture steel needle pulling-out guide cylinder 300 and the injection retention soft needle base 201 combination to move to the bottom end of the puncture steel needle pulling-out guide cylinder 100, the puncture steel needle 303 and the retention hollow soft needle 202 also penetrate the skin, when the limit buckle 301 reaches the bottom of the puncture steel needle pulling-out guide cylinder 100 along with the puncture steel needle pulling-out guide cylinder 300, the limit buckle 301 rotates under the action of the wedge beam 103 at the bottom of the puncture steel needle pulling-out guide cylinder 100 to enable the lug 3011 of the limit buckle 301 to leave the bayonet 401 of the puncture steel needle pulling-out guide cylinder 300 to enter the guide opening groove 403, and the puncture steel needle pulling-out auxiliary spring 302 pushes the limit buckle 301 to move to the top end of the puncture steel needle pulling-out guide cylinder 300, and the retention hollow soft needle 202 is retained under the skin.
The beneficial effects are that:
the device has exquisite structure, can realize the selection of the puncture steel needle to pull out the guide cylinder to trigger the puncture needle insertion action, automatically pull out the puncture steel needle after the puncture is in place, and keep the injection soft needle at the injection position, thereby realizing the small built-in automatic needle insertion of the adhesive continuous subcutaneous drug delivery system, avoiding pollution, reducing pain and reducing psychological fear of users.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form 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 understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (4)
1. An auxiliary needle insertion device for a patch-type continuous subcutaneous drug delivery system, comprising:
a bottom sleeve (500);
ejection needle insertion guide cylinder (100): the device is sleeved in the bottom sleeve (500), a plurality of guide beams (102) are symmetrically arranged on the inner side wall, and a plurality of wedge beams (103) are vertically arranged around the bottom of the ejection needle guide cylinder (100);
the puncture steel needle is pulled out of the guide cylinder (300): the injection power spring (501) is vertically arranged at the center position of the inner bottom of the bottom sleeve (500), the injection power spring (501) fixedly connected with the inner bottom of the bottom sleeve (500) is sleeved outside, a plurality of guide open grooves (403) and embedded buckle limit grooves (402) are symmetrically arranged on the outer periphery side, and bayonets (401) corresponding to the guide open grooves (403) are arranged at the end parts;
injection indwelling soft needle base (201): the puncture needle pulling-out guide cylinder comprises a round base body, an outer convex ring arranged at the end part of the base body and provided with an opening guide groove (203) in a surrounding manner, a remaining hollow soft needle (202) arranged at the end part of the base body and penetrating through the center position, and a connecting limit column (204) symmetrically and vertically arranged at the bottom of the base body in a surrounding manner and sleeved on the outer side part of the puncture needle pulling-out guide cylinder (300); the bottom of the limit column (204) is provided with a convex limit buckle (205) matched with the embedded buckle limit 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 beam (103);
puncture steel needle (303): the bottom of the base body is matched with a puncture steel needle pulling guide cylinder (300) through a limit buckle (301) which penetrates through the end part of the base body and corresponds to the indwelling hollow soft needle (202), the limit buckle (301) is clamped in the space between a bayonet (401) and the gap of an adjacent limit post (204) in an initial state, and a puncture steel needle pulling auxiliary spring (302) is sleeved between the limit buckle (301) and the base body;
the limiting buckle (301) adopts a limiting block structure with protruding blocks (3011) arranged at equal intervals around the outer circumferential side;
the opening guide groove (203) of the injection indwelling soft needle base (201) is aligned with the guide beam (102), when a needle is inserted, the puncture steel needle is pulled out of the guide cylinder (300) until the wedge beam (103) at the bottom of the ejection needle insertion guide cylinder (100) and the lug (3011) are pushed mutually to enable the limit buckle (301) to rotate, and the lug (3011) enters the guide opening groove (403).
2. An auxiliary needle insertion device for an applied continuous subcutaneous drug delivery system according to claim 1, characterized in that the projections (3011) correspond to the position and number of bayonets (401) and spaces between adjacent spacing posts (204) gaps.
3. An auxiliary needle insertion device for a patch-type continuous subcutaneous drug delivery system according to claim 1, characterized in that the center of the ejector needle insertion guide cylinder (100) is provided with a center hole (101) corresponding to the hollow soft needle (202) and the puncture steel needle (303).
4. An auxiliary needle insertion device for an applied continuous subcutaneous drug delivery system according to claim 1, wherein the initial state of the injection power spring (501) and the puncture steel needle extraction auxiliary spring (302) are both compressed.
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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
|---|---|
| CN114344617A CN114344617A (en) | 2022-04-15 |
| CN114344617B true 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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| CN114344617A (en) | 2022-04-15 |
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