CN218978919U - Positive pressure blood sampling vein indwelling needle - Google Patents
Positive pressure blood sampling vein indwelling needle Download PDFInfo
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- CN218978919U CN218978919U CN202222513069.7U CN202222513069U CN218978919U CN 218978919 U CN218978919 U CN 218978919U CN 202222513069 U CN202222513069 U CN 202222513069U CN 218978919 U CN218978919 U CN 218978919U
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- indwelling needle
- needle
- blood sampling
- positive pressure
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- 238000010241 blood sampling Methods 0.000 title claims abstract description 45
- 210000003462 vein Anatomy 0.000 title claims abstract description 6
- 238000001802 infusion Methods 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 16
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 claims description 15
- 229960002897 heparin Drugs 0.000 claims description 15
- 229920000669 heparin Polymers 0.000 claims description 15
- 239000010985 leather Substances 0.000 claims description 5
- 210000004369 blood Anatomy 0.000 description 64
- 239000008280 blood Substances 0.000 description 64
- 230000006978 adaptation Effects 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 206010018910 Haemolysis Diseases 0.000 description 3
- 230000008588 hemolysis Effects 0.000 description 3
- 238000001990 intravenous administration Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 206010003226 Arteriovenous fistula Diseases 0.000 description 1
- 208000032544 Cicatrix Diseases 0.000 description 1
- 206010013954 Dysphoria Diseases 0.000 description 1
- 206010073753 Fear of injection Diseases 0.000 description 1
- 208000028990 Skin injury Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000008451 emotion Effects 0.000 description 1
- 210000003743 erythrocyte Anatomy 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229940127558 rescue medication Drugs 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000004026 tunica intima Anatomy 0.000 description 1
Images
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a positive pressure blood sampling vein indwelling needle which comprises an indwelling needle base and a mounting seat, wherein the indwelling needle base comprises an outer shell part, an inner catheter part and a rubber cover part at the bottom of the catheter, an adapting groove is formed in the outer wall of the bottom of the indwelling needle base, the outer wall of the mounting seat is adapted to the inner wall of the adapting groove, a needle handle is arranged on the outer wall of the mounting seat, an indwelling needle catheter is arranged on the outer wall of the top of the indwelling needle base, a puncture needle and a blood sampling needle are respectively arranged on the outer walls of the top and the bottom of the mounting seat, and a one-way valve mechanism is arranged on the outer wall of the indwelling needle base. The positive pressure blood sampling venous indwelling needle disclosed by the utility model completes venous blood sampling while completing venous indwelling needle puncture, realizes one needle for two purposes, and reduces the puncture times of patients.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a positive pressure blood sampling venous indwelling needle.
Background
The use of the detaining needle can reduce the pain of the child patient caused by repeated venipuncture and the fear of needle injection, lighten the dysphoria emotion of parents, facilitate clinical medication, rescue medication of emergency and critical patients, lighten the workload of nurses and reduce the pain of the child patient, so the intravenous detaining needle is widely applied in clinic.
Patent document of application number 202220697167.8 discloses an arteriovenous fistula puncture retention needle, including detaining the needle, detaining the needle endotheca and being equipped with the pjncture needle, the draw-in groove has been seted up on the detaining the needle, be provided with the elasticity cushion on the draw-in groove, the elasticity cushion is driven laminating skin. However, the existing indwelling needle is matched with only one puncture needle, and the puncture needle needs to puncture again or is used for drawing blood through a heparin cap when blood is drawn, so that a blood sample is easily affected.
For example: when a patient is in hospital, the patient needs to be subjected to blood sampling test firstly, then intravenous transfusion is carried out, at the moment, if blood sampling is carried out again, extra pain and skin injury are caused to the patient, and the blood sampling vascular intima is repeatedly punctured to easily form a large amount of scars, thrombus is easy to form, the positive pressure intravenous blood sampling indwelling needle can simultaneously complete blood sampling and transfusion work, but if a syringe is used for sampling blood from a heparin cap, negative pressure is required to be formed by manual suction, the operation is inconvenient, the formed negative pressure is unstable, the cell structure is easy to be damaged, the needle head is required to be firmly installed before blood sampling, so that foam is prevented from being generated, sample hemolysis is caused, and an operator needs to remove a rubber plug of a vacuum blood sampling tube after the blood sample suction is finished, the blood sample is easy to pollute, and therefore, the blood sample is unqualified.
Disclosure of Invention
The utility model discloses a positive pressure blood sampling venous indwelling needle, which aims to solve the technical problem that only one puncture needle is matched with the existing indwelling needle, and blood sample is easily affected because the puncture needle is required to be re-punctured or the blood is drawn through a heparin cap during blood drawing.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a positive pressure blood sampling vein detaining needle, includes detaining needle base and mount pad, keep somewhere the needle base including outside casing part, inside pipe part and the rubber lid part of pipe bottom, keep somewhere the bottom outer wall of needle base and be provided with the adaptation groove, the outer wall of mount pad with the inner wall looks adaptation of adaptation groove, the outer wall of mount pad is provided with the needle handle, the top outer wall of detaining the needle base is provided with detains the needle pipe, the top outer wall and the bottom outer wall of mount pad are provided with pjncture needle and blood taking needle respectively, the outer wall of detaining the needle base is provided with check valve mechanism, the input of check valve mechanism is provided with joint mechanism.
The venous indwelling needle is used for completing venous blood sampling while completing puncturing, one needle is used for two purposes, the puncturing frequency of a patient is reduced, the needle handle is held to withdraw from the puncturing needle after blood sampling is completed, and the puncturing needle is thin and rubber has elasticity, so that the position of the rubber cover part which is punctured by the puncturing needle automatically heals, and the subsequent transfusion to the patient through the indwelling catheter is not influenced.
In a preferred scheme, the puncture needle passes through the rubber cover and enters the indwelling needle catheter, the top of the mounting seat enters the inner wall of the adapting groove, and the thickness of the rubber cover is 2-3cm.
The thickness of the rubber cover is set to be 2-3cm, so that the puncture needle can be firmly penetrated through the rubber cover, and the puncture needle can not shake in the puncture process by matching a proper matching groove with the mounting seat, so that the stability is strong.
In a preferred scheme, the check valve mechanism includes with the infusion joint pipe of pipe intercommunication, the inner wall of infusion joint pipe is provided with solid fixed ring and sets up the rubber leather sheath of gu fixed ring one end, the one end of rubber leather sheath is provided with the sealing plug, the inner wall of infusion joint pipe is provided with the ring channel, the sealing plug keep away from gu fixed ring's one end with the ring channel forms seal structure, the inner wall of infusion joint pipe is provided with solid fixed ring, gu fixed ring's inner wall is provided with reset spring, reset spring's one end set up in one side outer wall of sealing plug.
Blood can oppress reset spring and stretch out, then drive sealing plug and ring channel and form seal structure, prevent blood from further entering into among the transfer line and causing blood to flow backwards, effectually prevent that blood from entering into among malleation joint and the heparin cap joint, prevent to cause blood pollution, and during infusion, liquid medicine can normally flow into in the catheter of remaining needle.
From the above, the positive pressure blood sampling venous indwelling needle comprises an indwelling needle base and a mounting seat, wherein the indwelling needle base comprises an external shell part, an internal catheter part and a rubber cover part at the bottom of the catheter, an adapting groove is formed in the outer wall of the bottom of the indwelling needle base, the outer wall of the mounting seat is adapted to the inner wall of the adapting groove, a needle handle is arranged on the outer wall of the mounting seat, an indwelling needle catheter is arranged on the outer wall of the top of the indwelling needle base, a puncture needle and a blood sampling needle are respectively arranged on the outer wall of the top and the outer wall of the bottom of the mounting seat, a one-way valve mechanism is arranged on the outer wall of the indwelling needle base, and a joint mechanism is arranged at the input end of the one-way valve mechanism. The positive pressure blood sampling venous indwelling needle provided by the utility model completes venous blood sampling while completing venous indwelling needle puncture, realizes one needle for two purposes, reduces the puncture times of a patient, simultaneously does not need to draw blood at a heparin cap, can prevent manual suction from forming negative pressure, and the formed negative pressure is unstable and easily damages a cell structure, and needs to ensure that a needle head is firmly installed before blood sampling so as to prevent the occurrence of foam and the hemolysis of a specimen.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a positive pressure blood sampling venous indwelling needle according to the present utility model.
Fig. 2 is an enlarged schematic view of the position a of the positive pressure blood sampling venous indwelling needle according to the present utility model.
Fig. 3 is a perspective view of the retaining needle base of the positive pressure blood sampling venous retaining needle according to the present utility model.
Fig. 4 is an exploded view of the positive pressure blood collection venous indwelling needle according to the present utility model.
In the accompanying drawings: 1. a needle retaining base; 2. a retention needle protective sleeve; 3. a positive pressure joint; 4. a heparin cap connector; 5. an infusion tube; 6. an infusion connector tube; 7. a blood taking needle protecting sleeve; 8. a needle handle; 9. a return spring; 10. a sealing plug; 11. rubber leather sheath; 12. a catheter of an indwelling needle; 13. a puncture needle; 14. a blood taking needle; 15. a mounting base; 16. and an adaptation groove.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The positive pressure blood sampling venous indwelling needle disclosed by the utility model is mainly applied to only one puncture needle matched with the existing indwelling needle, and the situation of blood sample is easily affected because the puncture needle is required to be re-punctured or the blood is drawn through a heparin cap during blood drawing.
Referring to fig. 1, 3 and 4, the positive pressure blood sampling venous indwelling needle comprises an indwelling needle base 1 and a mounting seat 15, wherein the indwelling needle base 1 comprises an external shell part, an internal catheter part and a rubber cover part at the bottom of the catheter, an adapting groove 16 is formed in the outer wall of the bottom of the indwelling needle base 1, the outer wall of the mounting seat 15 is adapted to the inner wall of the adapting groove 16, a needle handle 8 is arranged on the outer wall of the mounting seat 15, an indwelling needle catheter 12 is arranged on the outer wall of the top of the indwelling needle base 1, a puncture needle 13 and a blood sampling needle 14 are respectively arranged on the outer wall of the top and the bottom of the mounting seat 15, a one-way valve mechanism is arranged on the outer wall of the indwelling needle base 1, and a joint mechanism is arranged at the input end of the one-way valve mechanism; when a patient is in hospital, the puncture needle 13 passes through the rubber cover part through the needle handle 8, the mounting seat 15 and the indwelling needle base 1 are combined together to form a whole, then medical staff holds the needle handle 8 to puncture through the puncture needle 13, the blood sampling test tube is taken out at the moment, the blood sampling is carried out on the patient through the blood sampling needle 14, the one-way valve mechanism can prevent blood from flowing backwards into the joint mechanism to cause the condition that a blood sample is polluted during blood sampling, the venous blood sampling is completed while the venous indwelling needle puncture is completed, the two-purpose needle is realized, the puncture times of the patient are reduced, the needle handle 8 is held to withdraw from the puncture needle 13 after the blood sampling is completed, and because the puncture needle 13 is thinner and rubber has elasticity, the place where the rubber cover part is pricked by the puncture needle 13 is automatically healed at the moment, and the subsequent transfusion to the patient through the indwelling catheter is not influenced.
The following description is needed: the housing part, the catheter part and the rubber cover part of the indwelling needle base 1 are all prior art used in the medical care field, and therefore are not described here in detail.
Specifically, a clamping groove is formed in the outer wall of the top of the indwelling needle base 1, an indwelling needle protecting sleeve 2 is inserted into the inner wall of the clamping groove, a clamping groove is formed in the outer wall of the bottom of the mounting seat 15, and a blood taking needle protecting sleeve 7 is arranged in the inner wall of the clamping groove; before the whole indwelling needle is not used or after the use, the indwelling needle protecting sleeve 2 and the blood taking needle protecting sleeve 7 are respectively sleeved on the outer walls of the puncture needle 13 and the blood taking needle 14, so that puncture is prevented.
Referring to fig. 1 and 4, in a preferred embodiment, the puncture needle 13 is inserted into the indwelling needle catheter 12 through a rubber cap having a thickness of 2-3cm, and the top of the mount 15 is inserted into the inner wall of the fitting groove 16.
In the specific use process, the thickness of the rubber cover is set to be 2-3cm, so that the puncture needle 13 can be firmly penetrated through the rubber cover, the puncture needle 13 can not shake in the puncture process through the matching of the mounting seat 15 and the adapting groove 16, and the stability is high.
Referring to fig. 1 and 2, in a preferred embodiment, the check valve mechanism includes an infusion connector tube 6 communicated with a catheter, a fixing ring and a rubber sleeve 11 arranged at one end of the fixing ring are arranged on the inner wall of the infusion connector tube 6, a sealing plug 10 is arranged at one end of the rubber sleeve 11, an annular groove is arranged on the inner wall of the infusion connector tube 6, a sealing structure is formed by one end of the sealing plug 10 away from the fixing ring and the annular groove, the fixing ring is arranged on the inner wall of the infusion connector tube 6, a return spring 9 is arranged on the inner wall of the fixing ring, and one end of the return spring 9 is arranged on one outer wall of the sealing plug 10.
Specifically, when the blood taking needle 14 is used for taking blood from a patient, two choices exist in the catheter inside the indwelling needle base 1, one is that a large amount of blood directly enters the blood taking test tube through the blood taking needle 14, and a part of blood possibly enters the infusion connector tube 6, at the moment, the blood can press the reset spring 9 to stretch out, then the sealing plug 10 and the annular groove are driven to form a sealing structure, the blood is prevented from further entering the infusion tube 5 to cause backflow, the blood is effectively prevented from entering the positive pressure connector 3 and the heparin cap connector 4 to prevent from causing blood pollution, and when the infusion is carried out, the liquid medicine pushes the sealing plug 10 to leave the annular groove through pressure, so that the liquid medicine can normally flow into the indwelling needle catheter 12.
Referring to fig. 1, in a preferred embodiment, the joint mechanism includes an infusion tube 5 provided at an input end of an infusion tube 6, one end of the infusion tube 5 is provided with a positive pressure joint 3, an outer wall of the positive pressure joint 3 is provided with a heparin cap joint 4, one end of the heparin cap joint 4 is provided with a heparin cap body, and a top end of the positive pressure joint 3 is provided with a screw structure.
Specifically, the disposable blood taking needle is connected between the heparin cap and the vacuum blood taking tube in clinical practice and is influenced by the tube diameter of the disposable blood taking needle tube, the operation prolongs the length of a pipeline through which red blood cells need to pass, the conversion times among different needles are increased, the sample hemolysis is easier to cause, the risk of experimental data errors is increased, the double-needle is adopted in the scheme, the double-needle is used for one needle, the blood sample is better protected, and the blood can show real blood data.
Working principle: when a patient is in hospital, the puncture needle 13 passes through the rubber cover part through the needle handle 8, the mounting seat 15 and the detaining needle base 1 are combined together to form a whole, then medical staff holds the needle handle 8 to puncture the patient through the puncture needle 13, the blood collection test tube is taken out at the moment, the patient is collected through the blood collection needle 14, the one-way valve mechanism can prevent that a large amount of blood flows backwards into the connector mechanism to cause the condition that a blood sample is polluted, the venous blood collection is completed when the venous detaining needle is in puncture, the needle is two-purpose, the puncture times of the patient are reduced, the needle handle 8 is held after the blood collection is completed to withdraw the puncture needle 13, the rubber cover part is automatically healed at the position where the puncture needle 13 is pricked by the puncture needle because the puncture needle 13 is thinner and has elasticity, the patient is not influenced by the subsequent transfusion of the detaining catheter, when the blood collection needle 14 is used for collecting the blood of the patient, two choices are arranged in the catheter inside the detaining needle base 1, a large amount of blood can be directly introduced into the connector mechanism through the needle 14 during the blood collection, a large amount of blood can be possibly enter the transfusion connector 6, the venous blood collection is completed, the venous collection is completed, the needle is further led to the venous collection is carried out through the needle 9, the venous collection is carried out, the blood is further to the blood is sealed through the needle connector 4, the blood collection tube is further is prevented from entering the blood connector 4, and the blood is prevented from entering the blood connector is sealed through the needle seal tube, and the needle 4, and the blood tube is further to be prevented from being polluted, and the blood from entering into the blood connector is caused by the needle connector.
The above description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto. The substitutions may be partial structures, devices, or method steps, or may be a complete solution. The technical proposal and the utility model concept are equivalent to or changed in accordance with the utility model, and the utility model is covered in the protection scope of the utility model.
Claims (8)
1. The positive pressure blood sampling venous indwelling needle comprises an indwelling needle base (1) and a mounting seat (15), wherein the indwelling needle base (1) comprises an external shell part, an internal catheter part and a rubber cover part at the bottom of the catheter, and is characterized in that an adapting groove (16) is formed in the outer wall of the bottom of the indwelling needle base (1), the outer wall of the mounting seat (15) is matched with the inner wall of the adapting groove (16), a needle handle (8) is arranged on the outer wall of the mounting seat (15), an indwelling needle catheter (12) is arranged on the outer wall of the top of the indwelling needle base (1), a puncture needle (13) and a blood sampling needle (14) are respectively arranged on the outer wall of the top and the outer wall of the bottom of the mounting seat (15), and a one-way valve mechanism is arranged at the input end of the one-way valve mechanism.
2. The positive pressure blood sampling venous indwelling needle according to claim 1, wherein the puncture needle (13) passes through the rubber cover into the indwelling needle catheter (12), and the top of the mounting seat (15) enters into the inner wall of the adapting groove (16), and the thickness of the rubber cover is 2-3cm.
3. The positive pressure blood sampling vein indwelling needle according to claim 2, wherein a clamping groove is formed in the top outer wall of the indwelling needle base (1), an indwelling needle protecting sleeve (2) is inserted into the inner wall of the clamping groove, a clamping groove is formed in the bottom outer wall of the mounting seat (15), and a blood sampling needle protecting sleeve (7) is arranged on the inner wall of the clamping groove.
4. The positive pressure blood sampling venous indwelling needle according to claim 1, wherein the one-way valve mechanism comprises an infusion connector tube (6) communicated with the catheter, a fixing ring and a rubber leather sheath (11) arranged at one end of the fixing ring are arranged on the inner wall of the infusion connector tube (6), and a sealing plug (10) is arranged at one end of the rubber leather sheath (11).
5. The positive pressure blood sampling venous indwelling needle according to claim 4, wherein an annular groove is formed in the inner wall of the infusion connector tube (6), one end of the sealing plug (10) away from the fixing ring and the annular groove form a sealing structure, the inner wall of the infusion connector tube (6) is provided with the fixing ring, a reset spring (9) is arranged on the inner wall of the fixing ring, and one end of the reset spring (9) is arranged on the outer wall of one side of the sealing plug (10).
6. The positive pressure blood sampling venous indwelling needle according to claim 5, wherein said joint mechanism comprises an infusion tube (5) provided at an input end of said infusion tube (6), and one end of said infusion tube (5) is provided with a positive pressure joint (3).
7. The positive pressure blood sampling vein indwelling needle according to claim 6, wherein the outer wall of said positive pressure connector (3) is provided with a heparin cap connector (4), and one end of said heparin cap connector (4) is provided with a heparin cap body.
8. The positive pressure blood sampling venous indwelling needle according to claim 7, wherein the tip of the positive pressure connector (3) is provided as a screw structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222513069.7U CN218978919U (en) | 2022-09-22 | 2022-09-22 | Positive pressure blood sampling vein indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222513069.7U CN218978919U (en) | 2022-09-22 | 2022-09-22 | Positive pressure blood sampling vein indwelling needle |
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| Publication Number | Publication Date |
|---|---|
| CN218978919U true CN218978919U (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222513069.7U Active CN218978919U (en) | 2022-09-22 | 2022-09-22 | Positive pressure blood sampling vein indwelling needle |
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| Country | Link |
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| CN (1) | CN218978919U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118987407A (en) * | 2024-09-20 | 2024-11-22 | 中国人民解放军总医院第一医学中心 | Device convenient for transfusion and blood sampling |
-
2022
- 2022-09-22 CN CN202222513069.7U patent/CN218978919U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118987407A (en) * | 2024-09-20 | 2024-11-22 | 中国人民解放军总医院第一医学中心 | Device convenient for transfusion and blood sampling |
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