CN211611091U - Negative pressure type visible blood return retaining needle for jugular vein - Google Patents
Negative pressure type visible blood return retaining needle for jugular vein Download PDFInfo
- Publication number
- CN211611091U CN211611091U CN201921634295.2U CN201921634295U CN211611091U CN 211611091 U CN211611091 U CN 211611091U CN 201921634295 U CN201921634295 U CN 201921634295U CN 211611091 U CN211611091 U CN 211611091U
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- needle
- negative pressure
- needle tube
- observation window
- jugular vein
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Abstract
The utility model discloses a visual blood return of jugular vein negative pressure formula is put and is kept somewhere needle, catheter subassembly and needle tubing assembly including interconnect, the catheter subassembly includes the pipe seat and fixes at its distal end, is used for the pipe of infusion, the needle tubing assembly includes needle tube seat and needle tubing at least, the near-end of needle tubing set firmly in the needle tube seat, the distal end of needle tubing is passed the cavity of pipe is inside and stretch out, one side of needle tube seat has the flank, the negative pressure source has set firmly on the flank, the negative pressure source is linked together with the first end of an observation window, the second end of observation window with the bottom of needle tubing is linked together. The utility model discloses a set up the negative pressure source and make the inside negative pressure that forms of needle tubing for inside blood of needle tubing flows back observation window and negative pressure source fast, has solved disease blood pressure inadequately, the slow problem of blood return.
Description
Technical Field
The utility model relates to an infusion apparatus technical field specifically relates to a visual blood return of jugular vein negative pressure formula is put and is stayed needle.
Background
The venous indwelling needle is a medical apparatus used for intravenous infusion treatment, the existing indwelling needle comprises a needle seat and a puncture needle, one end of the needle seat is provided with an indwelling soft catheter, a needle cavity is formed in the needle seat and communicated with an indwelling hose, an isolating plug is arranged in the needle cavity, and the puncture needle penetrates through the isolating plug and is inserted into the indwelling hose. When medical personnel puncture the venous blood vessel of a patient, whether the indwelling needle tube has been punctured into the venous blood vessel of the patient needs to be judged by observing whether blood returns.
When medical personnel puncture, because the pressure in the needle chamber does not change, there is the problem that it is difficult to observe the blood return. In some special cases, the venous return speed of the patient becomes slow, for example, the subcutaneous fat of some patients causes the venous return speed to be slow, and sometimes when the patient uses a medicine for controlling blood pressure or is in a special case of heavy bleeding and the like, the venous blood pressure of the patient is also low, so that the venous return speed is slow. Especially for patients with insufficient systemic circulating blood volume and hypoproteinemia edema, the blood vessels of the patients collapse and are not full due to insufficient circulating blood volume and poor nutrition condition, so that blood return is not easy to observe when the indwelling needle is arranged, and the puncture success rate is influenced.
The needle head of the general indwelling needle tube is far away from the blood return cavity, sometimes, too low blood pressure is difficult to extrude blood into the blood return cavity, the time required for the blood in the venous vessel of a patient to flow from the needle head of the indwelling needle tube to the blood return cavity is far longer than the operation time for medical staff to puncture the venous vessel of the patient, and therefore the medical staff can be difficult to accurately judge whether the blood in the venous vessel of the patient is punctured, repeated puncture is generated, the wall of the catheter is very thin, the repeated puncture can cause the occurrence of folds of the catheter, thrombus is generated, mechanical phlebitis is caused, unnecessary pain is brought to the patient, and meanwhile, the working efficiency of the medical staff is also reduced.
Therefore, how to accurately judge whether the indwelling needle is successfully inserted is a problem which needs to be solved at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects existing in the prior art and providing a jugular vein negative pressure type visual blood return indwelling needle.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a jugular vein negative pressure formula is visual returns blood and is put and stay needle, includes interconnect's catheter subassembly and needle tubing assembly, the catheter subassembly includes the pipe seat and fixes at its distal end, is used for the pipe of infusion, the needle tubing assembly includes needle tube seat and needle tubing at least, the near-end of needle tubing set firmly in the needle tube seat, the distal end of needle tubing passes the cavity inside of pipe stretches out, one side of needle tube seat has the flank, the negative pressure source has set firmly on the flank, the negative pressure source is linked together with the first end of an observation window, the second end of observation window with the inner chamber of needle tubing is linked together.
Preferably, the negative pressure source is made of elastic medical plastic; the observation window is made of transparent medical plastic.
Preferably, the viewing window is provided at the proximal end of the needle hub.
Preferably, the observation window is made of a flexible catheter.
Preferably, the second end of the observation window is sleeved with the needle tube in an adhering mode.
Preferably, the observation window is made of rigid plastic, a second end of the observation window penetrates through the needle tube seat and then is communicated with the inner cavity of the needle tube, the observation window and the needle tube seat are welded by ultrasonic waves, and the second end of the observation window is in bonding and sleeving connection with the needle tube.
Preferably, the bottom of the needle tube seat is provided with a telescopic fold part, the fully-extended length of the fold part is not less than the length of the needle tube, in a first state, the fold part is folded, and the needle head of the needle tube protrudes out of the fold part; in the second state, the fold part is fully extended, and the needle tube is positioned inside the fold part.
Preferably, the top of the needle tube seat is provided with an elastic block, and the needle tube penetrates through the elastic block in the first state; when the folded part is in the second state, the elastic block seals the needle head of the needle tube.
Preferably, the catheter holder is internally provided with an elastic blocking plug, and the needle tube penetrates through the blocking plug in an initial state.
Preferably, a connecting catheter for transfusion is connected to one side of the catheter holder, and a connecting port of the connecting catheter and the catheter holder is positioned between the top end of the catheter holder and the blocking plug; the connecting conduit is provided with a flow stopping clamp; the afterbody of connecting tube is provided with the connector that is used for connecting the infusion, one side of connector is provided with the heparin cap.
The beneficial effects of the utility model are mainly embodied in that:
1. the negative pressure source is arranged to enable negative pressure to be formed inside the needle tube, so that blood inside the needle tube can quickly flow back to the observation window and the negative pressure source, and the problems of insufficient blood pressure and slow blood return of patients are solved;
2. the observation window is arranged, so that once blood flows back, the opening of the blood outflow needle can be observed, and the accuracy of observing the blood return is improved to the maximum extent;
3. the needle tubing is provided with telescopic fold portion outward, has effectively sealed dumped syringe needle, has avoided used syringe needle to stab medical personnel, causes the unnecessary potential safety hazard.
Drawings
The technical scheme of the utility model is further explained by combining the attached drawings as follows:
FIG. 1: schematic diagram of an embodiment of the present invention;
FIG. 2: schematic diagram of a second embodiment of the present invention;
FIG. 3: the utility model discloses the schematic view under the fold portion second state in the second embodiment.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not limited to the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the scope of the present invention.
In the description of the schemes, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; in the description of the embodiment, the operator is used as a reference, and the direction close to the operator is a proximal end, and the direction away from the operator is a distal end.
As shown in fig. 1, the utility model discloses a visual blood return of jugular vein negative pressure formula is put and is remained needle, catheter subassembly and needle tubing assembly including interconnect, the catheter subassembly includes catheter holder 1 and fixes at its distal end, is used for the pipe 101 of infusion, the needle tubing assembly includes needle tube seat 2 and needle tubing 3 at least, the near-end of needle tubing 3 set firmly in needle tube seat 2, the distal end of needle tubing 3 passes the inside and stretching out of cavity of pipe 11, one side of needle tube seat 2 has flank 203, negative pressure source 4 has set firmly on the flank 203. The negative pressure source 4 is made of elastic medical plastic so as to be convenient for medical staff to press. Generally, the negative pressure source 4 is a soft air chamber.
The utility model discloses in, observation window 5 sets up the near-end of needle tube seat 2, the air inlet of negative pressure source 4 is linked together with the first end of an observation window 5, the second end of observation window 5 with the bottom of needle tube 3 is linked together. The observation window 5 is arranged so that once blood flows out of the needle tube 3, the blood can be observed from the observation window 4, thereby improving the accuracy of observing the returned blood to the maximum extent.
In order to facilitate the observation of the blood return, the observation window 5 is made of transparent medical plastic. Specifically, the observation window 5 may be a flexible catheter or may be made of rigid plastic.
In the preferred embodiment of the present invention, the observation window 5 is a flexible conduit, the first end of which is connected to the negative pressure source 4 and the second end of which is connected to the needle tube 3.
In the second embodiment shown in fig. 2 and 3, the observation window 5 has a first end communicating with the negative pressure source 4 and a second end passing through the sidewall of the needle hub 2 and communicating with the inside of the needle tube 3. In this embodiment, the bottom of the needle tube base 2 has a telescopic fold portion 201, the fully extended length of the fold portion 201 is not less than the length of the needle tube 3, in the first state, the fold portion 201 is folded, and the needle head of the needle tube 3 protrudes from the fold portion 201; in the second state, the fold portion 201 is fully extended, and the needle tube 3 is positioned inside the fold portion 201. The corrugated portion 201 is of a bellows structure in the preferred embodiment of the present invention, but in other embodiments, the corrugated portion 201 may be any device capable of achieving a change in axial distance, such as a retractable pipe, an antenna-type hose, etc. as will be appreciated by those skilled in the art.
In order to close the needle head of the needle tube 3 after the needle tube 3 is pulled out, the top of the needle tube seat 2 is provided with an elastic block 202, and the needle tube 3 passes through the elastic block 202 in a first state; when the folded part 201 is in the second state, the elastic block 202 seals the needle of the needle tube 3. Fold portion 201 with supporting use of elastic block 202 for extract behind the needle tubing 3, needle tubing 3 can seal completely in fold portion 201, avoid used needle tubing 3 to cause blood stain pollution or cause the secondary injury to other personnel, improved the security of keeping somewhere the needle.
In the second embodiment of the present invention, the observation window 5 is made of rigid plastic, the observation window 5 and the needle tube holder 2 are fixed together by ultrasonic wave, and the structure is set such that when the needle tube holder 2 is pulled out from the bottom of the needle tube holder 2, the needle tube 3 can follow the needle tube holder 2 to move synchronously, relatively, the elastic block 202 moves.
The catheter hub 1 is provided with an elastic blocking plug 102 inside, and the needle tube 3 penetrates through the blocking plug 102 in an initial state. When the needle tube 3 is pulled out, the blocking plug 102 can seal the proximal end of the catheter 1 under the action of the elasticity of the blocking plug itself. The blocking plug 102 is made of a relatively dense elastic material, such as rubber.
For connecting a transfusion, a connecting conduit 103 for transfusion is connected to one side of the catheter hub 1, and the connecting port 104 of the connecting conduit 103 and the catheter hub 1 is positioned between the top end of the catheter hub 1 and the blocking plug 102. The tail of the connecting conduit 103 is provided with a connector 106 for connecting transfusion, and one side of the connector 106 is provided with a heparin cap 107. In order to facilitate the adjustment of the infusion, a flow stop clip 105 is arranged on the connecting conduit 103. This is prior art, and is not the key point of the present invention, and is not described here.
The utility model discloses a theory of operation does: firstly, the medical staff presses the negative pressure source 4 to form negative pressure inside the needle tube 3; then, the needle tube 3 and the catheter 101 are pierced into the patient's skin; then, the edge of the negative pressure source 4 is pinched, and the needle tube 3 is pulled out. Finally, the catheter 101 is left in the patient's skin, and the extracted needle cannula 3 is closed in the fold 201.
The utility model discloses a set up negative pressure source 4 makes the inside formation negative pressure of needle tubing 3 makes the inside blood of needle tubing 3 flows back fast observation window 5 with the inside of negative pressure source 4 has solved the disease blood pressure inadequately, the slow problem of blood return.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. Jugular vein negative pressure formula is visual to return blood and is put and stay needle, catheter subassembly and needle tubing assembly including interconnect, the catheter subassembly includes pipe seat (1) and fixes pipe (101) at its distal end, be used for the infusion, the needle tubing assembly includes needle tube seat (2) and needle tubing (3) at least, the near-end of needle tubing (3) set firmly in needle tube seat (2), the distal end of needle tubing (3) is passed the cavity inside and the extension of pipe (101), its characterized in that: one side of needle tube seat (2) has flank (203), set firmly negative pressure source (4) on flank (203), negative pressure source (4) are linked together with the first end of an observation window (5), the second end of observation window (5) with the inner chamber of needle tubing (3) is linked together.
2. The jugular vein negative pressure type visual blood return indwelling needle according to claim 1, which is characterized in that: the negative pressure source (4) is made of elastic medical plastic; the observation window (5) is made of transparent medical plastic.
3. The jugular vein negative pressure type visual blood return indwelling needle according to claim 2, wherein: the observation window (5) is arranged at the near end of the needle tube seat (2).
4. The jugular vein negative pressure type visual blood return indwelling needle according to claim 2, wherein: the observation window (5) is made of a flexible conduit.
5. The jugular vein negative pressure type visual blood return indwelling needle according to claim 4, wherein: the second end of the observation window (5) is bonded and sleeved with the needle tube (3).
6. The jugular vein negative pressure type visual blood return indwelling needle according to claim 2, wherein: the observation window (5) is made of hard plastic, the second end of the observation window (5) penetrates through the needle tube seat (2) and then is communicated with the inner cavity of the needle tube (3), ultrasonic welding is carried out between the observation window (5) and the needle tube seat (2), and the second end of the observation window (5) is bonded and sleeved with the needle tube (3).
7. The jugular vein negative pressure type visual blood return indwelling needle according to claim 6, wherein: the bottom of the needle tube seat (2) is provided with a telescopic fold part (201), the fully-extended length of the fold part (201) is not less than the length of the needle tube (3), the fold part (201) is folded in a first state, and the needle head of the needle tube (3) protrudes out of the fold part (201); in the second state, the fold portion (201) is fully extended, and the needle tube (3) is positioned inside the fold portion (201).
8. The jugular vein negative pressure type visual blood return indwelling needle according to claim 7, wherein: an elastic block (202) is arranged at the top of the needle tube seat (2), and the needle tube (3) penetrates through the elastic block (202) in the first state; when the folded part (201) is in the second state, the elastic block (202) seals the needle head of the needle tube (3).
9. The jugular vein negative pressure type visual blood return indwelling needle according to any one of claims 1 to 8, wherein: an elastic blocking plug (102) is arranged in the catheter seat (1), and the needle tube (3) penetrates through the blocking plug (102) in an initial state.
10. The jugular vein negative pressure type visual blood return indwelling needle according to claim 9, wherein: a connecting catheter (103) for transfusion is connected to one side of the catheter seat (1), and a connecting port (104) of the connecting catheter (103) and the catheter seat (1) is positioned between the top end of the catheter seat (1) and the obstruction plug (102); a flow stopping clip (105) is arranged on the connecting conduit (103); the tail of connecting catheter (101) is provided with connector (106) that is used for connecting the infusion, one side of connector (106) is provided with heparin cap (107).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921634295.2U CN211611091U (en) | 2019-09-27 | 2019-09-27 | Negative pressure type visible blood return retaining needle for jugular vein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921634295.2U CN211611091U (en) | 2019-09-27 | 2019-09-27 | Negative pressure type visible blood return retaining needle for jugular vein |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211611091U true CN211611091U (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921634295.2U Expired - Fee Related CN211611091U (en) | 2019-09-27 | 2019-09-27 | Negative pressure type visible blood return retaining needle for jugular vein |
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| Country | Link |
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| CN (1) | CN211611091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110585520A (en) * | 2019-09-27 | 2019-12-20 | 苏州林华医疗器械股份有限公司 | Negative pressure type visible blood return retaining needle for jugular vein |
-
2019
- 2019-09-27 CN CN201921634295.2U patent/CN211611091U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110585520A (en) * | 2019-09-27 | 2019-12-20 | 苏州林华医疗器械股份有限公司 | Negative pressure type visible blood return retaining needle for jugular vein |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201002 |
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| CF01 | Termination of patent right due to non-payment of annual fee |