CN210992277U - Multifunctional indwelling needle - Google Patents
Multifunctional indwelling needle Download PDFInfo
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- CN210992277U CN210992277U CN201921958945.9U CN201921958945U CN210992277U CN 210992277 U CN210992277 U CN 210992277U CN 201921958945 U CN201921958945 U CN 201921958945U CN 210992277 U CN210992277 U CN 210992277U
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Abstract
A multifunctional indwelling needle comprises an indwelling needle tube, a steel needle is inserted into the indwelling needle tube, the rear side of the indwelling needle tube is connected with a connecting tube, a check valve is sleeved on the connecting tube, a patch is sleeved on the connecting tube, the tail end of the connecting tube is connected with a check valve, the side end of the check valve is connected with a blood drawing tube, the rear end of the check valve is connected with a flow dividing head, the rear end of the flow dividing head is connected with a plurality of positive pressure connectors, the tail ends of the positive pressure connectors are connected with trigger covers, and the tail; the flow distribution head is sleeved with a protective sleeve. The utility model effectively solves the problems that the existing equipment is easy to bleed, easy to flow back and block, is not firm to fix and easy to drop, is inconvenient to fill other medicines in the transfusion, and is inconvenient to make a large amount of fluid infusion or input various hemostatic medicines.
Description
Technical Field
The utility model belongs to the technical field of medical instrument and specifically relates to a multi-functional needle of keeping somewhere.
Background
The use of the needle of keeping somewhere of vein puncture can reduce the misery that the infant caused because of repeated vein puncture and the fear of making a needle, alleviate the irritated mood of the head of a family, be convenient for clinical medicine, urgent, critical patient's rescue is used medicine, alleviate nurse's work load, it is painful to reduce the infant, therefore the needle is kept somewhere to the vein is in clinical wide application, but present keep somewhere needle pipe seat and pipe junction with have the certain height to lead to withdrawing from the pipe root behind the steel core and the skin of eye department has certain angle, the activity of infant four limbs is frequent, lead to the eye department rate of bleeding very high and the eye department of needle to keep somewhere easy weeping, and then reduce the life of needle, increase the misery of infant, cause the head of a family nervous anxiety, increase nurse's work load. And the problems that the indwelling needle is easy to flow back and block, is not firm to fix and easy to fall off and is inconvenient to fill other medicines in the transfusion when in use. In addition, for digestive patients, the existing indwelling needle cannot realize a large amount of fluid infusion due to the fact that the digestive patients have no water intake; moreover, patients with hemorrhage in the department of gastroenterology need to pump various hemostatic drugs, and the existing indwelling needle cannot meet the requirements.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide multi-functional needle of keeping somewhere, solved current equipment effectively and easily bleed, easily backward flow blocks up, fixed insecure easily drops, inconvenient in the infusion fill other medicines, inconvenient a large amount of fluid infusion or the problem of input multiple hemostatic.
In order to solve the above problems, the utility model adopts the following technical proposal:
a multifunctional indwelling needle comprises an indwelling needle tube, a steel needle is inserted into the indwelling needle tube, the rear side of the indwelling needle tube is connected with a connecting tube, a check valve is sleeved on the connecting tube, a patch is sleeved on the connecting tube, the tail end of the connecting tube is connected with a check valve, the side end of the check valve is connected with a blood drawing tube, the rear end of the check valve is connected with a flow dividing head, the rear end of the flow dividing head is connected with a plurality of positive pressure connectors, the tail ends of the positive pressure connectors are connected with trigger covers, and the tail; the flow distribution head is sleeved with a protective sleeve.
Preferably, the indwelling needle tube comprises a tube part and a holding part, and the front side of the holding part and the upper side and the lower side of the joint of the tube part are both backwards provided with a beveled plane.
Preferably, the paster includes laminating portion and sleeve part, and the sleeve part suit is on the connecting pipe, and laminating portion downside coating has medical glue, and laminating portion downside covers has from type paper.
Preferably, the cross section of the protective sleeve is fan-shaped, openings are formed in the front side and the rear side of the protective sleeve, a plurality of fixing belts which are uniformly distributed are connected in the opening in the rear side of the protective sleeve, fixing pieces are arranged on the upper portion of the rear side of the protective sleeve corresponding to the positions of the fixing belts, and the fixing belts are connected with the fixing pieces through magic tapes; protective sheath bottom evenly is provided with a plurality of fixed subsides, and the bottom of fixed subsides has all coated medical glue, and fixed bottom cover of pasting has from type paper.
Preferably, the included angle between the one-way valve and the back side of the blood drawing tube is an acute angle; the check valve comprises a valve body, annular baffle rings are arranged on the inner walls of the rear side and the front side of the valve body, and a check baffle and a safety spring are sequentially arranged between the two baffle rings from back to front; a plurality of arc grooves which are uniformly distributed are formed in the outer circumference of the one-way baffle, and a silica gel sleeve covers the surface of the safety spring; the tail end of the blood drawing tube is provided with a rubber membrane.
Preferably, the positive pressure joint comprises a pipe body, the rear end of the pipe body is forwardly provided with a stepped positive pressure groove, the inner diameter of the front end of the positive pressure groove is larger than that of the rear end, a stepped positive pressure shaft is connected in the positive pressure groove in a sliding manner, the outer diameter and the length of the rear end of the positive pressure shaft are respectively the same as those of the rear end of the positive pressure groove, and the outer diameter of the front end of the positive pressure shaft is the same as that of the front end of the positive pressure groove;
the front end of the positive pressure shaft is fixedly connected with a positive pressure spring, and the front end of the positive pressure spring is fixedly connected with the inner wall of the front end of the positive pressure groove;
the pipe body front end is opened backward has the longitudinal section to be annular and passes through the groove, and it has a plurality of liquid holes to inwards evenly open through groove rear end inner wall, and it link up to go out the liquid hole just to the positive-pressure tank, the axial position that goes out the liquid hole is located the front end and the rear end junction in just pressing the groove.
Preferably, the rear end of the positive pressure joint is provided with an external thread, the front end of the trigger cover is provided with an internal thread, and the positive pressure joint and the trigger cover are connected through a thread; the axial length of the external thread is greater than the length of the rear end of the positive pressure groove; the inner wall of the front end of the trigger cover is provided with a trigger column, and the axial length of the trigger column is smaller than that of the trigger cover;
a through hole is formed forwards in the center of the rear end of the trigger cover, cross holes which are uniformly distributed are formed inwards in the outer circumference of the front part of the trigger column, and the cross holes penetrate into the through hole;
a first connecting belt is rotatably connected between the positive pressure joint and the trigger cover; and a second connecting belt is rotatably connected between the trigger cover and the protective cover.
Preferably, a cylindrical tubular sleeve is arranged at the rear end of one half of the trigger cover, the protective cover corresponding to the sleeve is cylindrical, and the protective cover is inserted into the sleeve;
the rear end of the other half of the trigger cover is provided with a conical tubular insertion pipe, the protection cover corresponding to the insertion pipe is a cylinder with an opening at the front end, and the insertion pipe is inserted into the protection cover.
The utility model discloses novel structure, think about ingenious, easy operation is convenient, compares with prior art and has following advantage:
1. this device is difficult for droing, and the security is high: the paster can be with this device prepositioning on the patient to use with applying ointment or plaster cooperation, improved the use agility of this device. The fixed band is located the clearance that each corresponding malleation connects, through the connection of fixed band and stationary blade, fixes parts such as protective sheath and malleation joint, has improved the stability of this device. The fixing paste can stably fix the protective sleeve and the components in the protective sleeve on the skin of a patient, so that the falling possibility is reduced, and the safety in use is improved.
2. This device is difficult for blockking up, long service life: the one-way valve can effectively reduce blood backflow and prevent the tube blockage. The rear side of the flow dividing head is provided with a plurality of flow dividing pipes which are uniformly distributed, and the liquid medicine stored in the positive pressure joint can be pumped into the connecting pipe after the trigger cover leaves, so that the blood in the connecting pipe is pushed out and replaced by the liquid medicine, the service life of the device is prolonged, and the trouble of replacement is reduced. The arrangement of a plurality of positive pressure joints makes this device have higher use tolerance, can not take place because a joint breaks and the condition of changing.
3. This device has better convenience and travelling comfort: the blood drawing pipe is positioned at the front side of the valve body of the one-way valve, so that blood drawing operation can be performed when the infusion is not performed, and the use convenience of the device is greatly improved. The protective sheath can wrap the shunting head and parts behind the shunting head, so that the device does not cause too much burden to a patient and does not damage the patient due to misoperation although the device has more interfaces.
4. The device has high safety and good sanitation: the protective cover can cover the tail end of the trigger cover, so that dust and dirt can be effectively prevented when the device is not used, the safety of the device is improved, and the insanitation is reduced. The arrangement of the beveling plane ensures that the device does not leak blood due to the gap between the indwelling needle tube and the skin after the steel needle is pulled out, thereby not only reducing the burden of medical care personnel, but also reducing the pain of patients.
5. This device can help medical personnel of gastroenterology to alleviate the burden, raises the efficiency: a large amount of liquid can be supplemented through a plurality of positive pressure joints; is convenient for pumping various hemostatic medicines into the digestive bleeding patients, and improves the operation efficiency.
Drawings
Fig. 1 is a first perspective view of the multi-functional indwelling needle of the present invention.
Fig. 2 is a second shaft mapping diagram of the multifunctional indwelling needle of the present invention.
Fig. 3 is an axonometric view of the multifunctional indwelling needle after the protective sheath is removed.
Fig. 4 is an axonometric view of the indwelling needle tube and the steel needle of the multifunctional indwelling needle of the present invention.
Fig. 5 is an axonometric view of the connecting tube of the multi-functional indwelling needle of the present invention and the upper part thereof.
Fig. 6 is an axonometric view of the protective sheath of the multifunctional indwelling needle of the present invention.
Fig. 7 is an axonometric view of the check valve of the multifunctional indwelling needle and the connecting part thereof.
Fig. 8 is a partially cut-away isometric view of the multi-functional retaining needle check valve of the present invention.
Fig. 9 is a partially cut-away isometric view of the positive pressure connector of the multi-functional indwelling needle of the present invention.
Fig. 10 is an exploded view of the first positive pressure joint and its connecting part of the multifunctional indwelling needle of the present invention.
Fig. 11 is an exploded view of the second positive pressure joint and its connecting part of the multifunctional indwelling needle of the present invention.
Detailed Description
The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-11, the utility model provides a multifunctional indwelling needle, including indwelling needle tube 1, steel needle 2 is inserted in indwelling needle tube 1, the rear side of indwelling needle tube 1 is connected with connecting pipe 3, the cover of connecting pipe 3 is equipped with flow stopping valve 4, the cover of connecting pipe 3 is equipped with paster 5, the end of connecting pipe 3 is connected with check valve 6, the side end of check valve 6 is connected with blood drawing pipe 7, the rear end of check valve 6 is connected with flow divider 16, the rear end of flow divider 16 is connected with a plurality of positive pressure connectors 9, the end of positive pressure connector 9 is connected with trigger lid 10, the end of trigger lid 10 is connected with protective lid 11; the flow distribution head 16 is sleeved with a protective sleeve 8.
The patch 5 can pre-position the device on the body of a patient and is matched with the application, so that the use rapidity of the device is improved. The one-way valve 6 can effectively reduce blood backflow and prevent the tube blockage. The blood drawing tube 7 is positioned at the front side of the valve body of the one-way valve 6, so that blood drawing operation can be performed when infusion is not performed, and the use convenience of the device is greatly improved. The rear side of the flow dividing head is provided with a plurality of flow dividing pipes which are uniformly distributed, and after the trigger cover 10 leaves, the positive pressure connector can pump the liquid medicine stored in the positive pressure connector into the connecting pipe 3, so that the blood in the connecting pipe 3 is pushed out and replaced by the liquid medicine, the service life of the device is prolonged, and the trouble of replacement is reduced. The arrangement of the positive pressure joints 9 not only ensures that the device has higher use tolerance, but also can not be replaced when one joint is broken; and because the patient that gastroenterology forbidden to eat water is many, can be through a large amount of fluid infusion of this device, the hemorrhage patient of gastroenterology needs the pump to go into multiple hemostatic, and every malleation connects 9 and can both utilize, has greatly improved the availability factor. The protective cover 11 can cover the end of the trigger cover 10, so that the device can effectively prevent dust and dirt when not in use, the safety of the device is improved, and the insanitation is reduced. The protective sleeve 8 can wrap the shunt head 1 and the parts behind the shunt head, so that the device does not cause too much burden to a patient and does not damage the patient due to misoperation although the device has more interfaces.
The indwelling needle tube 1 comprises a tube part and a holding part, and the front side of the holding part and the upper side and the lower side of the joint of the tube part are both backwards provided with a beveled plane. The gripping portion and the tube portion form a smooth transition portion 13, which does not present steps and reduces the occurrence of bleeding.
The arrangement of the beveling plane ensures that the device does not leak blood due to the gap between the indwelling needle tube and the skin after the steel needle is pulled out, thereby not only reducing the burden of medical care personnel, but also reducing the pain of patients.
The cross section of the protective sleeve 8 is fan-shaped, openings are formed in the front side and the rear side of the protective sleeve 8, a plurality of fixing belts 14 which are uniformly distributed are connected in the opening in the rear side of the protective sleeve 8, fixing plates 15 are arranged on the upper portion of the rear side of the protective sleeve 8 corresponding to the positions of the fixing belts 14, and the fixing belts 14 are connected with the fixing plates 15 through magic tapes; the bottom of the protective sleeve 8 is uniformly provided with a plurality of fixing pastes 12, the bottoms of the fixing pastes 12 are coated with medical glue, and the bottoms of the fixing pastes 12 are coated with release paper.
The fixing belt 14 is positioned in the clearance of each corresponding positive pressure joint 13, and the components such as the protective sleeve 8, the positive pressure joint 9 and the like are fixed through the connection of the fixing belt 14 and the fixing sheet 15, so that the stability of the device is improved. The fixing paste 12 can stably fix the protective sleeve 8 and the components therein on the skin of a patient, thereby reducing the possibility of falling off and improving the safety in use.
The included angle between the one-way valve 6 and the back side of the blood drawing tube 7 is an acute angle; the check valve 6 comprises a valve body, annular baffle rings 19 are arranged on the inner walls of the rear side and the front side of the valve body, and a check baffle 18 and a safety spring 17 are sequentially arranged between the two baffle rings 19 from back to front; a plurality of arc grooves which are uniformly distributed are formed in the outer circumference of the one-way baffle 18, and a silica gel sleeve covers the surface of the safety spring 17; the tail end of the blood drawing tube 7 is provided with a rubber membrane.
The liquid input from the outside pushes the one-way blocking piece 18 forwards, and the liquid pushes the safety spring to compress, overflows from the arc groove to the front side of the one-way valve 6 and flows into the connecting pipe 3. The silica gel sleeve 17 can not only protect the safety spring 17 from being corroded by the medicine, but also prevent the safety spring 17 from reacting with the medicine to deteriorate the medicine. The rubber membrane is used for inserting the blood drawing needle and can play a role in blocking air when not in use.
The positive pressure joint 9 comprises a pipe body, the rear end of the pipe body is provided with a step-shaped positive pressure groove 21 forwards, the inner diameter of the front end of the positive pressure groove 21 is larger than that of the rear end, a step-shaped positive pressure shaft 20 is connected in the positive pressure groove 21 in a sliding mode, the outer diameter and the length of the rear end of the positive pressure shaft 20 are respectively the same as those of the rear end of the positive pressure groove 21, and the outer diameter of the front end of the positive pressure shaft 20 is the same as that of the front end of the positive pressure groove;
the front end of the positive pressure shaft 20 is fixedly connected with a positive pressure spring 22, and the front end of the positive pressure spring 22 is fixedly connected with the inner wall of the front end of the positive pressure groove 21;
the pipe body front end is opened backward has longitudinal section to be annular and passes through groove 23, and it has a plurality of liquid holes 24 to inwards evenly open through groove 23 rear end inner wall, and liquid hole 24 link up to positive-pressure groove 21, the axial position of liquid hole 24 is located the front end and the rear end junction of positive-pressure groove 21.
The working principle of the positive pressure joint 9 is as follows: when the positive pressure shaft 20 is pressed, the chemical liquid flows from the rear side of the positive pressure joint 9 to the rear end of the front end through the rear end of the positive pressure groove 21, flows to the through groove 23 through the liquid outlet hole 24, and then flows into the check valve 6.
When the positive pressure shaft 21 is not pressed, the positive pressure shaft 21 pushes the liquid medicine stored at the rear part of the front end of the positive pressure groove 21 into the through groove 23 through the liquid outlet hole 24 under the action of the positive pressure spring 22 to form positive pressure, so that the connecting pipe 3 is filled with the liquid medicine, the blood backflow is effectively prevented, and the blocking condition is avoided.
The rear end of the positive pressure joint 9 is provided with an external thread, the front end of the trigger cover 10 is provided with an internal thread, and the positive pressure joint 9 and the trigger cover 10 are connected through a thread; the axial length of the external thread is greater than the length of the rear end of the positive pressure groove 21; a trigger column is arranged on the inner wall of the front end of the trigger cover 10, and the axial length of the trigger column is smaller than that of the trigger cover 10;
a through hole is formed forwards in the center of the rear end of the trigger cover 10, cross holes which are uniformly distributed are formed inwards in the outer circumference of the front part of the trigger column, and the cross holes penetrate into the through hole;
a first connecting belt 25 is rotatably connected between the positive pressure joint 9 and the trigger cover 10; a second connecting band 26 is rotatably connected between the trigger cover 10 and the protection cover 11.
The positive pressure joint 9 can be triggered by directly inserting an infusion apparatus into the rear end of the positive pressure joint 9, or inserting the infusion apparatus into the trigger cover 10, pushing the positive pressure shaft 20 through a trigger column in the trigger cover 10, and allowing the liquid medicine to flow into the positive pressure groove 21 after passing through the transverse hole.
When infusion is not needed, the trigger cover 10 is not pressed against the positive pressure shaft 20 only by rotating the trigger cover 10 not to be in front because the trigger column is short, so that dust can be prevented, and the pressure relief phenomenon cannot occur.
A cylindrical sleeve is arranged at the rear end of one half of the trigger cover 10, the protective cover 11 corresponding to the sleeve is cylindrical, and the protective cover 11 is inserted into the sleeve;
the rear end of the other half of the trigger cover 10 is provided with a conical tubular insertion tube, the protection cover 11 corresponding to the insertion tube is a cylinder with an opening at the front end, and the insertion tube is inserted into the protection cover 11.
The sleeve and the cannula are respectively suitable for different infusion apparatuses and injectors, the inner diameter of the sleeve is larger, and the outer diameter of the cannula is smaller, so that the sleeve and the cannula can be used for maximally adapting to various infusion tools, and the operation convenience of medical workers is improved.
This device is when using, at first will insert the needle tubing 1 that keeps somewhere that has inserted steel needle 2 to the patient's blood vessel, take out the back with steel needle 2, use applying ointment or plaster with keeping somewhere needle tubing 1 location, use paster 5 and fixed subsides 12 with this device prepositioning afterwards, back use applying ointment or plaster as required to consolidate, when needs draw blood from the rear end of drawing blood vessel 7 insert draw blood can. When transfusion is needed, the transfusion device is connected with any suitable trigger cover 10, and the transfusion can be started by screwing the trigger cover 10, so that the backflow phenomenon cannot occur. After the transfusion is finished, the trigger cover 10 is unscrewed to realize the liquid medicine tube sealing, and the blockage phenomenon can not occur. When a patient who is forbidden to eat water in the department of gastroenterology needs a large amount of fluid infusion and a patient who is bleeding in the department of gastroenterology needs to pump various hemostatic medicines, each positive pressure joint can be utilized to perform fluid infusion or medicine infusion, and the operation is simple and the efficiency is high.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or scope of the invention as defined in the appended claims.
Although the terms of the indwelling needle tube 1, the steel needle 2, the connecting tube 3, the flow stopping valve 4, the patch 5, the one-way valve 6, the blood drawing tube 7, the protective sleeve 8, the positive pressure connector 9, the trigger cover 10, the protective cover 11, the fixing patch 12, the transition part 13, the fixing band 14, the fixing piece 15, the flow dividing head 16, the safety spring 17, the one-way baffle 18, the baffle ring 19, the positive pressure shaft 20, the positive pressure groove 21, the positive pressure spring 22, the passing groove 23, the liquid outlet 24, the first connecting band 25, the second connecting band 26, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (8)
1. The utility model provides a multi-functional needle of keeping somewhere, is kept somewhere needle tubing (1) interpolation and has been had steel needle (2), keeps somewhere needle tubing (1) rear side and is connected with connecting pipe (3), and the cover is equipped with flow stopping valve (4) on connecting pipe (3), its characterized in that: the patch (5) is sleeved on the connecting pipe (3), the tail end of the connecting pipe (3) is connected with a one-way valve (6), the side end of the one-way valve (6) is connected with a blood pumping pipe (7), the rear end of the one-way valve (6) is connected with a flow dividing head (16), the rear end of the flow dividing head (16) is connected with a plurality of positive pressure connectors (9), the tail ends of the positive pressure connectors (9) are connected with trigger covers (10), and the tail ends of the trigger covers (10) are connected with protective covers (; the flow distribution head (16) is sleeved with a protective sleeve (8).
2. The multifunctional indwelling needle according to claim 1, wherein: the indwelling needle tube (1) comprises a tube part and a holding part, wherein the upper side and the lower side of the joint of the front side of the holding part and the tube part are both backwards provided with a beveled plane.
3. The multifunctional indwelling needle according to claim 1, wherein: paster (5) are including laminating portion and sleeve pipe portion, and the sleeve pipe portion suit is on connecting pipe (3), and laminating portion downside coating has medical glue, and laminating portion downside covers has from type paper.
4. The multifunctional indwelling needle according to claim 1, wherein: the cross section of the protective sleeve (8) is fan-shaped, openings are formed in the front side and the rear side of the protective sleeve (8), a plurality of fixing belts (14) which are uniformly distributed are connected in the opening of the rear side of the protective sleeve (8), fixing pieces (15) are arranged on the upper portion of the rear side of the protective sleeve (8) corresponding to the positions of the fixing belts (14), and the fixing belts (14) and the fixing pieces (15) are connected through magic tapes; a plurality of fixing pastes (12) are uniformly arranged at the bottom of the protective sleeve (8), medical glue is coated at the bottoms of the fixing pastes (12), and release paper covers the bottoms of the fixing pastes (12).
5. The multifunctional indwelling needle according to claim 1, wherein: the included angle between the one-way valve (6) and the back side of the blood drawing tube (7) is an acute angle; the check valve (6) comprises a valve body, annular baffle rings (19) are arranged on the inner walls of the rear side and the front side of the valve body, and a check baffle (18) and a safety spring (17) are sequentially arranged between the two baffle rings (19) from back to front; a plurality of arc grooves which are uniformly distributed are formed in the outer circumference of the one-way baffle (18), and a silica gel sleeve covers the surface of the safety spring (17); the tail end of the blood drawing tube (7) is provided with a rubber membrane.
6. The multifunctional indwelling needle according to claim 1, wherein: the positive pressure joint (9) comprises a pipe body, the rear end of the pipe body is forwards provided with a stepped positive pressure groove (21), the inner diameter of the front end of the positive pressure groove (21) is larger than that of the rear end, a stepped positive pressure shaft (20) is connected in the positive pressure groove (21) in a sliding mode, the outer diameter and the length of the rear end of the positive pressure shaft (20) are respectively the same as those of the inner diameter and the length of the rear end of the positive pressure groove (21), and the outer diameter of the front end of the positive pressure shaft (20) is the same as those of the front end of the positive;
the front end of the positive pressure shaft (20) is fixedly connected with a positive pressure spring (22), and the front end of the positive pressure spring (22) is fixedly connected with the inner wall of the front end of the positive pressure groove (21);
the body front end is opened backward has the longitudinal section to be annular through groove (23), has a plurality of liquid holes (24) through inwards evenly opening of groove (23) rear end inner wall, goes out liquid hole (24) and link up extremely positive-pressure groove (21), the axial position of liquid hole (24) is located the front end and the rear end junction of positive-pressure groove (21).
7. The multifunctional indwelling needle according to claim 6, wherein: the rear end of the positive pressure joint (9) is provided with an external thread, the front end of the trigger cover (10) is provided with an internal thread, and the positive pressure joint (9) is connected with the trigger cover (10) through the thread; the axial length of the external thread is greater than the length of the rear end of the positive pressure groove (21); a trigger column is arranged on the inner wall of the front end of the trigger cover (10), and the axial length of the trigger column is smaller than that of the trigger cover (10);
a through hole is formed in the center of the rear end of the trigger cover (10) forwards, cross holes are uniformly distributed in the outer circumference of the front part of the trigger column inwards, and the cross holes penetrate into the through hole;
a first connecting belt (25) is rotatably connected between the positive pressure joint (9) and the trigger cover (10); a second connecting belt (26) is rotatably connected between the trigger cover (10) and the protective cover (11).
8. The multifunctional indwelling needle according to claim 7, wherein: a cylindrical tubular sleeve is arranged at the rear end of one half of the trigger cover (10), the protective cover (11) corresponding to the sleeve is cylindrical, and the protective cover (11) is inserted into the sleeve;
the rear end of the other half of the trigger cover (10) is provided with a conical tubular insertion tube, the protection cover (11) corresponding to the insertion tube is a cylinder with an opening at the front end, and the insertion tube is inserted into the protection cover (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921958945.9U CN210992277U (en) | 2019-11-12 | 2019-11-12 | Multifunctional indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921958945.9U CN210992277U (en) | 2019-11-12 | 2019-11-12 | Multifunctional indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210992277U true CN210992277U (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921958945.9U Active CN210992277U (en) | 2019-11-12 | 2019-11-12 | Multifunctional indwelling needle |
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| Country | Link |
|---|---|
| CN (1) | CN210992277U (en) |
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2019
- 2019-11-12 CN CN201921958945.9U patent/CN210992277U/en active Active
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