CN213609015U - Syringe needle protection device - Google Patents
Syringe needle protection device Download PDFInfo
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- CN213609015U CN213609015U CN202021975875.0U CN202021975875U CN213609015U CN 213609015 U CN213609015 U CN 213609015U CN 202021975875 U CN202021975875 U CN 202021975875U CN 213609015 U CN213609015 U CN 213609015U
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- spring
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- sleeve body
- syringe needle
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Abstract
The utility model relates to a syringe needle head protection device, which comprises a protection outer sleeve, a mounting inner sleeve and a spring; the protective outer sleeve is provided with an outer sleeve body; the top of the outer sleeve body is provided with a spring mounting table; the spring is arranged on a spring mounting table above the outer sleeve body; the upper part of the outer sleeve body is provided with a backstop elastic sheet; a raised guide pin is arranged on the inner side of the upper part of the outer sleeve body; the lower part of the inner sleeve body for mounting the inner sleeve is provided with a backstop window; the wall surface of the inner sleeve body for mounting the inner sleeve is also provided with a guide window, and the guide pin is clamped in the guide window, so that the outer protective sleeve can only move relative to the inner sleeve along the guide window. The utility model discloses a syringe needle protection device, simple structure, easily production and equipment can effectually protect the syringe needle part of syringe.
Description
Technical Field
The utility model relates to a needle head protection device for a disposable syringe.
Background
The disposable syringe is the most common apparatus in the medical field at present, and in order to prevent the syringe needle after use from accidentally injuring a user to cause medicine pollution or prevent the syringe from being used for a second time, the syringe needle is generally required to be uniformly recovered after injection is finished at present; however, with the further strict management of medical devices, some mechanisms have required that a special protection device is additionally arranged on the disposable syringe, and after the injection is completed, the protection device is started to protect the needle head part, so that the needle head is prevented from being accidentally injured, the needle head is also prevented from being separated from the syringe body, and the use safety of the disposable syringe is improved.
The researches on the syringe needle protection device and the corresponding safety syringe are firstly carried out in European and American countries, and the corresponding patent technical schemes are mostly proposed by European and American enterprises, for example, the Chinese patent publication No. CN104411351A is used for the anti-needle-prick safety device of the injection device, the Chinese patent publication No. CN101437561A is used for the passive bolt lock ring safety protection device of the injection device, the Chinese patent publication No. CN1189222A is used for the disposable safety syringe, and the like, and the early stage is limited by the performance of the molding material, the protection requirements and the like, and the syringe needle protection device and the corresponding safety syringe are mostly complex in structure, inconvenient to operate and high in manufacturing cost.
In recent years, with the attention of domestic related enterprises to the field, related technologies have appeared, such as a sliding sleeve type needle protection device and a safety syringe with a chinese patent publication number of CN203043181U, a needle protection device and a safety syringe with a chinese patent publication number of CN111529825A, and a syringe needle protection device with a chinese patent publication number of CN 105854131A; the product has certain needle protecting performance, but part of the structure is still complex.
In order to further improve the operational convenience of the syringe needle protecting device and to improve the safety, further improvement of the related structure is necessary.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a syringe needle protection device to improve operation convenience, and the security in phase.
In order to achieve the purpose, the utility model provides a syringe needle protecting device which is characterized by comprising a protective outer sleeve, an installation inner sleeve and a spring;
the protective outer sleeve is provided with an outer sleeve body, the inner part of the outer sleeve body is a hollow cavity, and the inner cavity is used for accommodating the mounting inner sleeve; the top of the outer sleeve body is provided with a spring mounting table; the spring is arranged on a spring mounting table above the outer sleeve body;
the upper part of the outer sleeve body is provided with a backstop elastic sheet, and the top of the backstop elastic sheet is a free end and inclines inwards; the inner side of the top of the backstop elastic sheet is positioned in the section of the inner wall of the outer sleeve barrel in a free state;
a raised guide pin is arranged on the inner side of the upper part of the outer sleeve body;
an inner sleeve body is sleeved in the mounting inner sleeve body, a hollow cavity is formed inside the inner sleeve body, and a syringe barrel is accommodated in the hollow cavity; the outer side of the inner sleeve body is sleeved in the outer sleeve body of the protective outer sleeve; the top of the mounting inner sleeve is provided with a syringe fixing barrel, and a fixing claw is arranged in the syringe fixing barrel and used for fixing the syringe barrel; the outer side of the fixed claw is connected to the wall surface of the syringe fixed cylinder; when the fixing flange of the syringe barrel is clamped, the fixing claw is turned downwards around the fixing part on the outer side, so that the fixing flange is clamped; the bottom of the syringe fixing barrel is in contact with the top of the spring;
the lower part of the inner sleeve body for mounting the inner sleeve is provided with a backstop window; when the syringe needle protecting device is in a starting state, the backstop elastic sheet is buckled into the backstop window;
the wall surface of the inner sleeve body of the mounting inner sleeve is also provided with a guide window, and the guide pin is clamped in the guide window, so that the protective outer sleeve can only move relative to the mounting inner sleeve along the guide window;
the spring is positioned on the outer wall of the inner sleeve body and is positioned between the spring mounting platform and the syringe fixing barrel.
As a further improvement of the utility model, the guide window is composed of 3 parts of groove bodies, namely a retention groove before excitation, a spring excitation chute, a spring release guide groove, and the 3 parts of groove bodies are connected end to form a 7 shape;
when the syringe needle protecting device is in an unactivated state, the spring is in a compressed state, and the guide pin is positioned at the bottom of the pre-excitation retention groove;
when the syringe needle protecting device is started, the guide pin enters the spring release guide groove from the pre-excitation retention groove along the spring excitation inclined groove, the guide pin moves along the spring release guide groove under the action of the spring release elasticity, and the outer protective sleeve and the inner mounting sleeve move relatively;
and after the syringe needle protecting device is started, the guide pin is positioned at the bottom of the spring release guide groove.
As a further improvement of the utility model, the outer side of the upper part of the protective outer sleeve is provided with a handle wing panel.
Furthermore, a plurality of anti-slip strips are arranged at the bottom of the handle wing plate.
As a further improvement, the bottom of the protective sleeve is provided with a protective sheet, the protective sheet is formed by surrounding a plurality of arc-shaped sheets which are spaced from each other, the protective sheet is gathered to the center to shrink, so that the bottom of the protective sleeve is smaller than the inner diameter of the sleeve body.
As a further improvement of the utility model, more than 2 fixing claws are arranged along the inner wall of the injector fixing cylinder; the upper surface of the fixed claw is provided with a guide inclined plane.
As a further improvement of the utility model, the upper part of the inner sleeve body of the mounting inner sleeve is provided with a storage window, and the bottom of the storage window is provided with an inclined plane which inclines outwards;
when the syringe needle protecting device is in an unactivated state, the retaining elastic sheet is buckled into the storage window, and the outer part of the retaining elastic sheet is lower than the outer wall surface of the outer sleeve body of the protective sleeve.
Furthermore, a storage barrier strip is arranged in the storage window, and the outermost side of the storage barrier strip is lower than the outer diameter of the inner sleeve body;
when the syringe needle protection device is in an unactivated state, the backstop elastic sheet is propped against the outer surface of the storage barrier strip.
As a further improvement of the utility model, the bottom of the mounting inner sleeve is provided with a needle sleeve check sheet, the needle sleeve check sheet is an elastic piece, and the number of the needle sleeve check sheets is more than 2; the bottom of the needle head sleeve anti-return sheet is in a free state and gathers and contracts towards the center.
Furthermore, the outer wall of the needle head sleeve backstop sheet is provided with a backstop bulge.
As a further improvement, the bottom of the inner sleeve body is provided with a guide elastic sheet, the two sides of the guide elastic sheet are provided with open slots, and the bottom plate of the guide elastic sheet is an open end and can be elastically bent inwards along the open slots on the two sides.
Furthermore, the guide elastic sheet and the spring release guide groove are in the same vertical direction, and the open grooves on two sides of the guide elastic sheet extend upwards to the upper part of the bottom of the spring release guide groove.
As a further improvement of the utility model, the upper part of the protective outer sleeve is provided with a spring mounting cylinder, and the bottom of the spring mounting cylinder is provided with the spring mounting platform; the inner diameter of the spring installation cylinder is larger than that of the outer sleeve cylinder, and the bottom of the spring is installed in the spring installation cylinder.
The utility model discloses a syringe needle protection device adopts the protective sheath and the installation endotheca that plastics made, and the material has certain elasticity, toughness, convenient equipment.
The utility model discloses a syringe needle protection device, for current protection device, simple structure, easily production and equipment can effectually protect the syringe needle part of syringe.
Drawings
FIG. 1 is an exploded view of the components of the present invention;
fig. 2 is a schematic structural view 1 of the protective outer cover of the present invention;
fig. 3 is a schematic structural view 2 of the protective outer cover of the present invention;
fig. 4 is a schematic structural diagram 1 of the inner sleeve of the present invention;
fig. 5 is a schematic structural diagram 2 of the inner sleeve of the present invention;
FIG. 6 is a schematic view of the syringe barrel of the present invention;
fig. 7 is a schematic structural view of the syringe needle protection device of the present invention;
fig. 8 is a cross-sectional view of the syringe needle protection device of the present invention;
fig. 9 is a partially cut-away schematic view of the needle protector of the present invention;
FIG. 10 is a schematic view of the safety syringe according to the present invention;
FIG. 11 is a cross-sectional view of the safety syringe of the present invention;
FIG. 12 is a schematic view of the safety syringe according to the present invention in use;
FIG. 13 is a sectional view of the safety syringe according to the present invention in use;
fig. 14 is a schematic view of the release process of the protective sheath of the present invention;
fig. 15 is a schematic view of the protection cover of the present invention after releasing;
fig. 16 is a partially cut-away schematic view of the protective sheath release process of the present invention, schematically illustrated in fig. 1;
fig. 17 is a schematic partial sectional view of the protective sheath release process of the present invention, fig. 2;
fig. 18 is a partially cut-away schematic view of the protection cover of the present invention after releasing;
reference numerals: the protection device comprises a protection outer sleeve 1, a mounting inner sleeve 2 and a spring 3; a syringe barrel 4, a piston rod 5, a needle 6 and a needle cover 7;
an outer sleeve body 11, a spring mounting cylinder 12; handle tabs 13, cleats 131;
a protective sheet 14, a backstop elastic sheet 15 and a guide pin 16;
an inner sleeve body 21, a syringe fixing cylinder 22, a fixing claw 221;
a needle cover retaining piece 23, a retaining bulge 231; a backstop window 24, a storage window 25, and a storage barrier 251;
a guide window 26, a pre-excitation retention groove 261, a spring excitation inclined groove 262, a spring release guide groove 263; a guide spring piece 264;
a fixing flange 41; a piston rod bore 42.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a safety syringe includes a syringe needle protecting device, and a disposable syringe; the syringe needle protecting device comprises an outer protecting sleeve 1, an inner mounting sleeve 2 and a spring 3; the disposable syringe is similar to a conventional syringe and comprises a syringe barrel 4, a piston rod 5, a needle 6 and a needle cover 7.
The structure of the protective outer sleeve 1 is shown in fig. 2 and 3, the protective outer sleeve 1 is provided with an outer sleeve body 11, a hollow cavity is arranged inside the outer sleeve body 11, and the mounting inner sleeve 2 is accommodated in the hollow cavity; a spring mounting cylinder 12 is arranged at the upper part of the protective outer sleeve 1, the inner diameter of the spring mounting cylinder 12 is larger than that of the outer sleeve body 11, and the spring mounting cylinder 12 is used for mounting and storing the spring 3; the outer side of the upper part of the protective outer sleeve 1 is provided with a handle wing piece 13 for being held by fingers of an operator, and the bottom of the handle wing piece 13 is provided with a plurality of anti-slip strips 131 for increasing holding friction force; the bottom of protective sheath 1 is equipped with protection piece 14, protection piece 14 is surrounded by a plurality of arc pieces of mutual interval and is constituteed, protection piece 14 gathers together to the center and contracts, makes the protective sheath 1 bottom by the internal diameter that protection piece 14 constitutes is less than the internal diameter of outer cover barrel 11.
The upper part of the outer sleeve body 11 is provided with a backstop elastic sheet 15, and the top of the backstop elastic sheet 15 is a free end and inclines inwards; the top inner side of the backstop elastic sheet 15 is positioned in the inner wall section of the outer sleeve body 11 in a free state. The number of the backstop elastic sheets 15 is 2, and the backstop elastic sheets are symmetrically arranged on two sides of the outer sleeve body 11.
A raised guide pin 16 is provided on the inner side of the upper part of the outer sleeve body 11.
The structure of the mounting inner sleeve 2 is as shown in fig. 4 and 5, the mounting inner sleeve 2 is provided with an inner sleeve body 21, the inner part of the inner sleeve body 21 is a hollow chamber, and the hollow chamber is used for accommodating the syringe barrel 4; the outer side of the inner sleeve body 21 is sleeved in the outer sleeve body 11 of the protective outer sleeve 1; the top of the mounting inner sleeve 2 is provided with a syringe fixing barrel 22, and the syringe fixing barrel 22 is internally provided with a fixing claw 221 for fixing a fixing flange 41 (shown in fig. 6) of the syringe barrel 4; in order to facilitate the clamping of the fixing flange 41, the upper surface of the fixing claw 221 is provided with an inclined surface, and the outer side of the fixing claw 221 is connected to the wall surface of the syringe fixing cylinder 22; when the fixing flange 41 is engaged, the fixing claw 221 is turned downward around the outer fixing portion, so that the fixing flange 41 is smoothly engaged.
The bottom of the installation inner sleeve 2 is provided with a needle head sleeve check sheet 23, the needle head sleeve check sheet 23 is an elastic piece, and the bottom of the needle head sleeve check sheet 23 is in a free state and gathers to the center to shrink; in the free state, the bottom inside diameter of the needle cover retaining tab 23 is smaller than the top outside diameter of the needle cover 7.
The lower part of the inner sleeve body 21 of the installation inner sleeve 2 is provided with a stopping window 24, the stopping elastic sheet 15 is buckled into the stopping window 24, the top of the stopping elastic sheet 15 is propped against the top of the inner side of the stopping window 24, and the protection outer sleeve 1 cannot move upwards along the installation inner sleeve 2 any more.
Further, the upper part of the inner sleeve body 21 for mounting the inner sleeve 2 is provided with a storage window 25, and the bottom of the storage window 25 is provided with an inclined plane which inclines outwards. Still further, a storage barrier 251 is arranged in the storage window 25, and the outermost side of the storage barrier 251 is lower than the outer diameter of the inner sleeve body 21.
The wall surface of the inner sleeve body 21 of the mounting inner sleeve 2 is further provided with a guide window 26, and the guide pin 16 is clamped in the guide window 26, so that the protection outer sleeve 1 can only move relative to the mounting inner sleeve 2 along the guide window 26.
Further, the guide window 26 is composed of 3 parts of groove bodies, namely a pre-excitation retention groove 261, a spring excitation inclined groove 262, a spring release guide groove 263, and the 3 parts of groove bodies are connected end to form a 7 shape.
Furthermore, a guide elastic sheet 264 is arranged at the bottom of the inner sleeve body 21, open slots are formed in two sides of the guide elastic sheet 264, and a bottom plate of the guide elastic sheet 264 is an open end and can be elastically bent inwards along the open slots on the two sides; the guide elastic sheet 264 and the spring release guide groove 263 are in the same vertical direction, and open grooves at two sides of the guide elastic sheet 264 extend upwards to the upper part of the bottom of the spring release guide groove 263; when the protective outer sleeve 1 is mounted on the mounting inner sleeve 2, the guide pin 16 moves upward along the guide elastic sheet 264, and presses the guide elastic sheet 264 to contract inward, so that the guide pin 16 conveniently passes over the guide elastic sheet 264 and enters the spring release guide groove 263 to complete the primary assembly.
As shown in fig. 7 to 9, the syringe needle protector of the present invention is formed by assembling the outer protective sleeve 1, the inner mounting sleeve 2 and the spring 3 together, before use, the spring 3 is in a compressed state, that is, the top of the spring mounting cylinder 12 is close to the bottom of the syringe fixing cylinder 22; at this time, the retaining elastic sheet 15 is buckled into the storage window 25, so that the buckled outermost part of the retaining elastic sheet 15 is smaller than the outer wall of the outer sleeve body 11, and the retaining elastic sheet 15 is in a safe state, thereby preventing the retaining elastic sheet from being collided and damaged and influencing normal use; meanwhile, the inner side of the retaining elastic sheet 15 abuts against the storage barrier strip 251, so that the retaining elastic sheet 15 is prevented from being pressed by external force and being rapidly folded inwards to be further broken; and simultaneously, the uide pin 16 is located stay groove 261 before arousing, spring 3 is in compression state, will 16 tops of uide pin stay groove 261's bottom before arousing makes the utility model discloses a syringe needle protection device maintains the state before arousing.
As shown in fig. 10 and 11, in the disposable syringe, the piston rod 5 is inserted into the piston rod hole 42 of the syringe barrel 4, and the medicine is pre-filled therein; the tail end of the syringe barrel 4 is provided with a needle 6, and a needle cover 7 is sleeved outside the needle 6; the whole body is arranged from the top to the bottom in the hole of the inner sleeve body 21 of the mounting inner sleeve 2, so that the fixing flange 41 of the syringe barrel 4 is clamped into the syringe fixing barrel 22 by the fixing claws 221, and the safety syringe of the utility model is formed.
As shown in fig. 12, when the safety syringe of the present invention is used, the needle cover 7 is removed first, and at this time, the needle cover retaining piece 23 is retracted inward, so that the needle cover 7 cannot be inserted into the needle cover to protect the needle 6; the needle 6 is exposed to the outside, and injection operation can be carried out. At this time, the piston rod 5 is pushed to perform injection as in a conventional disposable syringe.
The outer wall of the needle cover retaining sheet 23 is also provided with a retaining projection 231, which further prevents the possibility of inserting the needle cover 7 back.
When the piston rod 5 is pushed to the bottom of the syringe barrel 4, as shown in fig. 13, the injection is completed; at this time, the force is continuously applied, the protective outer sleeve 1 and the piston rod 5 relatively move under the action of the finger driving the handle wing 13, the spring 3 is further compressed, and at this time, the guide pin 16 is also taken away from the bottom of the pre-excitation retention slot 261 and moves towards the spring excitation inclined slot 262; the spring biased chute 262 is a chute so that the guide pin 16 slides along the upper slope of the spring biased chute 262 from the pre-energized retention slot 261 to above the spring release channel 263.
Subsequently, the operator removes his hand, so that the protective outer sleeve 1 starts to be released under the action of the spring 3, at this time, the guide pin 16 starts to slide along the spring release guide groove 263, and the retaining elastic piece 15 slides out of the storage window 25 along the inclined plane at the bottom of the storage window 25; as shown in fig. 14.
When the guide pin 16 slides to the bottom of the spring release guide groove 263, the anti-return elastic sheet 15 is clamped in the anti-return window 24, as shown in fig. 15, the spring 3 is released, and the bottom of the protection sheet 14 of the protective outer sleeve 1 exceeds the bottom of the needle 6, so as to protect the needle 6; at this time, the retaining elastic sheet 15 is clamped into the retaining window 24, so that the protective outer sleeve 1 cannot move upwards and the needle 6 cannot be exposed, and a due protective effect is achieved.
The motion state of the guide pin 16 is schematically shown in fig. 9, 16-18.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (13)
1. The syringe needle protection device is characterized by comprising a protective outer sleeve, an installation inner sleeve and a spring;
the protective outer sleeve is provided with an outer sleeve body, the inner part of the outer sleeve body is a hollow cavity, and the inner cavity is used for accommodating the mounting inner sleeve; the top of the outer sleeve body is provided with a spring mounting table; the spring is arranged on a spring mounting table above the outer sleeve body;
the upper part of the outer sleeve body is provided with a backstop elastic sheet, and the top of the backstop elastic sheet is a free end and inclines inwards; the inner side of the top of the backstop elastic sheet is positioned in the section of the inner wall of the outer sleeve barrel in a free state;
a raised guide pin is arranged on the inner side of the upper part of the outer sleeve body;
an inner sleeve body is sleeved in the mounting inner sleeve body, a hollow cavity is formed inside the inner sleeve body, and a syringe barrel is accommodated in the hollow cavity; the outer side of the inner sleeve body is sleeved in the outer sleeve body of the protective outer sleeve; the top of the mounting inner sleeve is provided with a syringe fixing barrel, and a fixing claw is arranged in the syringe fixing barrel and used for fixing the syringe barrel; the outer side of the fixed claw is connected to the wall surface of the syringe fixed cylinder; when the fixing flange of the syringe barrel is clamped, the fixing claw is turned downwards around the fixing part on the outer side, so that the fixing flange is clamped; the bottom of the syringe fixing barrel is in contact with the top of the spring;
the lower part of the inner sleeve body for mounting the inner sleeve is provided with a backstop window; when the syringe needle protecting device is in a starting state, the backstop elastic sheet is buckled into the backstop window;
the wall surface of the inner sleeve body of the mounting inner sleeve is also provided with a guide window, and the guide pin is clamped in the guide window, so that the protective outer sleeve can only move relative to the mounting inner sleeve along the guide window;
the spring is positioned on the outer wall of the inner sleeve body and is positioned between the spring mounting platform and the syringe fixing barrel.
2. The syringe needle protection device of claim 1, wherein the guide window is composed of 3 parts of groove bodies, namely a pre-excitation retention groove, a spring excitation inclined groove and a spring release guide groove, wherein the 3 parts of groove bodies are connected end to form a 7 shape;
when the syringe needle protecting device is in an unactivated state, the spring is in a compressed state, and the guide pin is positioned at the bottom of the pre-excitation retention groove;
when the syringe needle protecting device is started, the guide pin enters the spring release guide groove from the pre-excitation retention groove along the spring excitation inclined groove, the guide pin moves along the spring release guide groove under the action of the spring release elasticity, and the outer protective sleeve and the inner mounting sleeve move relatively;
and after the syringe needle protecting device is started, the guide pin is positioned at the bottom of the spring release guide groove.
3. The syringe needle protection device of claim 1, wherein a handle tab is provided on an upper exterior side of the protective casing.
4. The syringe needle protection device of claim 3, wherein a plurality of anti-slip strips are provided on the bottom of the handle tab.
5. The syringe needle protection device of claim 1, wherein the bottom of the protective sleeve is provided with a protective sheet, the protective sheet is formed by a plurality of arc-shaped sheets which are spaced from each other in a surrounding manner, the protective sheet is gathered towards the center and contracted, so that the inner diameter formed by the protective sheet at the bottom of the protective sleeve is smaller than the inner diameter of the outer sleeve body.
6. The syringe needle protection device according to claim 1, wherein the number of the fixing claws is 2 or more along the inner wall of the syringe fixing barrel; the upper surface of the fixed claw is provided with a guide inclined plane.
7. The syringe needle protection device of claim 1, wherein said inner sleeve body of said mounting inner sleeve has a storage window at an upper portion thereof, and said storage window has an outwardly inclined slope at a bottom thereof;
when the syringe needle protecting device is in an unactivated state, the retaining elastic sheet is buckled into the storage window, and the outer part of the retaining elastic sheet is lower than the outer wall surface of the outer sleeve body of the protective sleeve.
8. The syringe needle protection device of claim 7, wherein a storage barrier is disposed in the storage window, and an outermost side of the storage barrier is lower than an outer diameter of the inner sleeve body;
when the syringe needle protection device is in an unactivated state, the backstop elastic sheet is propped against the outer surface of the storage barrier strip.
9. The syringe needle protection device of claim 1, wherein the bottom of the mounting inner sleeve is provided with a needle cover retaining piece, the needle cover retaining piece is an elastic piece, and the number of the needle cover retaining pieces is more than 2; the bottom of the needle head sleeve anti-return sheet is in a free state and gathers and contracts towards the center.
10. The syringe needle protection device of claim 9, wherein the needle cover retaining tab has a retaining protrusion on an outer wall thereof.
11. The device for protecting a syringe needle according to claim 1, wherein the bottom of the inner sleeve body is provided with a guide elastic piece, two sides of the guide elastic piece are provided with open slots, and a bottom plate of the guide elastic piece is an open end and can be elastically bent inwards along the open slots at the two sides.
12. The syringe needle protection device of claim 11, wherein the guide spring is in the same vertical direction as the spring release channel, and the open grooves on both sides of the guide spring extend upward above the bottom of the spring release channel.
13. The syringe needle protection device of claim 1, wherein a spring mounting cylinder is arranged at the upper part of the protective outer sleeve, and the spring mounting table is arranged at the bottom of the spring mounting cylinder; the inner diameter of the spring installation cylinder is larger than that of the outer sleeve cylinder, and the bottom of the spring is installed in the spring installation cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021975875.0U CN213609015U (en) | 2020-09-10 | 2020-09-10 | Syringe needle protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021975875.0U CN213609015U (en) | 2020-09-10 | 2020-09-10 | Syringe needle protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213609015U true CN213609015U (en) | 2021-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021975875.0U Active CN213609015U (en) | 2020-09-10 | 2020-09-10 | Syringe needle protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213609015U (en) |
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2020
- 2020-09-10 CN CN202021975875.0U patent/CN213609015U/en active Active
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