Remaining needle with accurate clamping position

Abstract

The utility model relates to an indwelling needle with an accurate clamping position. The indwelling needle comprises a puncture needle, a needle base, a catheter, a connector and a clamping piece. The puncture needle is arranged in the needle seat, the puncture needle is detachably connected with the needle seat, a needle tip of the puncture needle can extend out of the needle seat, a first end of the catheter is fixedly connected to the side face of the needle seat, a second end of the catheter is fixedly connected with the connector, the needle seat and the catheter are communicated with the interior, the clamping and closing piece is arranged on the catheter, and the clamping and closing piece is arranged on the catheter. The clamping and closing part is movably connected with the catheter, the positioning part is arranged at the front end of the clamping and closing part, the position, clamping and closing the catheter, of the clamping and closing part can be positioned at the upper one-third position, a clamping and closing pipeline is standard, the probability of blockage or blood return of the remaining needle can be reduced, and pain of a patient and the workload of medical staff are relieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to an indwelling needle with an accurate clamping position. Background Art

[0002] Intravenous infusion therapy is one of the most commonly used and most direct treatment methods in clinical practice. In recent years, with the progress of intravenous infusion therapy, my country has received 5 billion infusion treatments each year, 80% of hospitalized patients receive intravenous infusion therapy, and 85% of nurses spend more than 75% of their time on infusion operations. In order to ensure the smooth progress of infusion and minimize the pain of puncture caused by infusion to patients, at present, intravenous indwelling needles are mainly used in clinical practice for intravenous infusion of patients, and the penetration rate of intravenous indwelling needles in my country has reached more than 90%. Intravenous indwelling needles have the advantages of soft texture, simple operation, high success rate, few complications, and convenient patient activities and movement. The use of intravenous indwelling needles can protect veins, reduce pain and vascular damage caused by repeated punctures, keep the venous channel unobstructed, and facilitate rescue and treatment. It is especially suitable for patients who need long-term intravenous infusion and have difficulty in venous puncture.

[0003] The existing indwelling needle clamping device is movable on the pipeline. There is no obvious mark on the clamping position of the indwelling needle to remind the nurse to pay more attention during operation. At present, most indwelling needles are clamped randomly in clinical practice. The standard clamping position of the indwelling needle is one-third of the distance from the connection of the needle part. A major factor in the blockage of the indwelling needle is that the nurse is not used to clamping the upper one-third when sealing the tube. Different clamping positions are one of the factors that cause different degrees of blood return and blockage in the indwelling needle. The indwelling needle may need to be replaced after the pipeline is blocked or blood returns, which increases the patient's puncture pain and also increases the workload of medical staff.

[0004] In view of the above problems, the utility model provides an indwelling needle with accurate clamping position. Utility Model Content

[0005] In order to overcome the problems raised in the background technology, the utility model adopts the following technical solutions:

[0006] A retention needle with accurate clamping position, comprising a puncture needle, a needle seat, a catheter, a joint and a clamping piece; the puncture needle is arranged inside the needle seat, the puncture needle is detachably connected to the needle seat, the needle tip of the puncture needle can extend out of the needle seat, the first end of the catheter is fixedly connected to the side of the needle seat, the second end of the catheter is fixedly connected to the joint, the needle seat, the catheter and the connection are communicated with each other, the clamping piece is arranged on the catheter, the clamping piece is movably connected to the catheter, a positioning piece is arranged at the front end of the clamping piece, and the position of the clamping piece to clamp the catheter can be positioned at the upper third, the clamping pipeline is standard, the probability of blockage or blood return of the retention needle can be reduced, and the pain of the patient and the workload of medical staff are alleviated.

[0007] Furthermore, a soft sleeve is provided at the first end of the needle seat, and the soft sleeve is used to be retained in the patient's blood vessel. The inner diameter of the soft sleeve is the same as the diameter of the puncture needle. After the needle seat and the puncture needle cooperate, the puncture needle extends out of the soft sleeve.

[0008] Furthermore, the interior of the needle seat is hollow, and an isolation plug is provided between the connection between the needle seat and the catheter and the second end of the needle seat, which can ensure that the puncture needle is inserted and removed, and there is no leakage when the puncture needle is inserted and after it is removed.

[0009] Furthermore, the puncture needle is provided with a base, the base is cylindrical in shape, and the base has the same diameter as the needle seat.

[0010] Furthermore, a needle wing is provided on the base of the puncture needle, and the needle wing is in a sheet shape, so that medical staff can hold the needle wing to perform the puncture operation.

[0011] Furthermore, the joint includes a first joint and a second joint; the first joint is cylindrical and hollow inside, the first end of the joint is connected to the conduit, and the second end of the joint is connected to the external air.

[0012] Furthermore, the second connector is fixedly connected to the side of the first connector, the second connector is cylindrical and hollow inside, and the second connector, the first connector and the catheter are connected; the above arrangement ensures that when delivering medicine into the first connector, if other drugs need to be injected, other drugs can be injected into the second connector, which is easy to use.

[0013] Furthermore, the first connector and the second connector are both provided with a heparin cap, which ensures that there will be no leakage when the heparin cap is repeatedly punctured to inject the drug into the first connector or the second connector, and the device has high transparency and is easy to observe.

[0014] Furthermore, the shape of the clamping member is C-shaped, the first end of the clamping member is tilted outward, and the inner side of the clamping member close to the first end and the opposite inner side surface are both provided with protruding blocks for clamping the catheter; a blocking piece is provided at the second end of the clamping member, and the clamping member is an elastic member. By pressing the first end of the clamping member, the first end of the clamping member can contact the blocking piece and slide along the blocking piece into the inner side of the second end of the clamping member. At this time, the blocking piece blocks the first end of the clamping member, and the clamping member is in a clamped state.

[0015] Furthermore, openings are arranged at both ends of the clamping member, the catheter passes through the openings, and the clamping member can move on the catheter.

[0016] Furthermore, the positioning member is configured as a round tube, which is soft, and the sum of the length of the round tube and the length of the front end portion of the protruding block of the clamping member is one third of the length of the catheter; the above configuration ensures that the clamping member is pushed toward the front end, and when the front end of the positioning member is against the first end of the catheter, the clamping position of the clamping member is the upper third.

[0017] The beneficial effects of the utility model are as follows: the utility model has a reasonable structure; a positioning piece is arranged at the front end of the clamping piece, and the sum of the length of the positioning piece and the length of the front end part of the protruding block of the clamping piece is one-third of the length of the catheter, which ensures that when the medical staff puts the positioning piece against the first end of the catheter, the clamping position is at the upper one-third, and there is no need to look for the clamping position deliberately. The clamping position is accurate, which reduces the probability of blockage or blood return of the indwelling needle, and alleviates the pain of the patient and the workload of the medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic cross-sectional structure diagram of the utility model as a whole;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the clamping part of the clamping member of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the clamping member of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the needle seat and the soft sleeve of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the puncture needle and the base of the utility model;

[0024] In the figure, 1. puncture needle; 2. needle seat; 3. clamping piece; 4. soft sleeve; 5. isolation plug; 6. base; 7. needle wing; 8. first connector; 9. second connector; 10. heparin cap; 12. opening; 13. catheter; 14. round tube. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Those skilled in the art can easily understand other advantages and functions of the utility model from the contents disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] Please refer to Figure 1-6 In this embodiment, a retention needle with accurate clamping position includes a puncture needle 1, a needle seat 2, a catheter 13, a joint and a clamping piece 3; the puncture needle 1 is arranged inside the needle seat 2, the puncture needle 1 and the needle seat 2 are detachably connected, the needle tip of the puncture needle 1 can extend out of the needle seat 2, the first end of the catheter 13 is fixedly connected to the side of the needle seat 2, the second end of the catheter 13 is fixedly connected to the joint, the needle seat 2, the catheter 13 and the inside of the connection are communicated, the clamping piece 3 is arranged on the catheter 13, the clamping piece 3 is movably connected to the catheter 13, a positioning piece is arranged at the front end of the clamping piece 3, the position of the clamping piece 3 to clamp the catheter 13 can be positioned at the upper third, the clamping pipeline is standard, the probability of blockage or blood return of the retention needle can be reduced, and the pain of the patient and the workload of the medical staff are reduced.

[0028] Please refer to Figure 1-3 In some embodiments, a soft sleeve 4 is provided at the first end of the needle seat 2, and the soft sleeve 4 is used to be retained in the patient's blood vessel. The inner diameter of the soft sleeve 4 is the same as the diameter of the puncture needle 1. After the needle seat 2 and the puncture needle 1 are matched, the puncture needle 1 extends out of the soft sleeve 4; the interior of the needle seat 2 is hollow, and an isolation plug 5 is provided between the connection between the needle seat 2 and the catheter 13 and the second end of the needle seat 2, which can ensure the insertion and removal of the puncture needle 1, and there is no leakage when the puncture needle 1 is inserted and after it is removed.

[0029] Please refer to Figure 6 In some embodiments, the puncture needle 1 is provided with a base 6, which is cylindrical in shape and has the same diameter as the needle seat 2; a needle wing 7 is provided on the base 6 of the puncture needle 1, and the needle wing 7 is in the shape of a sheet, so that medical staff can hold the needle wing 7 for puncture operation.

[0030] Please refer to Figure 1-2In some embodiments, the connector includes a first connector 8 and a second connector 9; the first connector 8 is cylindrical and hollow inside, the first end of the connector is connected to the catheter 13, and the second end of the connector is connected to the external air; the second connector 9 is fixedly connected to the side of the first connector 8, the second connector 9 is cylindrical and hollow inside, and the second connector 9, the first connector 8 and the catheter 13 are connected; the above arrangement ensures that when delivering medicine into the first connector 8, if other drugs need to be injected, other drugs can be injected into the second connector 9, which is convenient to use; a heparin cap 10 is provided on both the first connector 8 and the second connector 9, and the above arrangement ensures that there will be no leakage when the heparin cap 10 is repeatedly punctured to inject drugs into the first connector 8 or the second connector 9, and the transparency is high, which is convenient for observation.

[0031] Please refer to Figure 1-4 The shape of the clamping member 3 is C-shaped, and the first end of the clamping member 3 is tilted outward, and the inner side of the clamping member 3 close to the first end and the opposite inner side are both provided with protruding blocks for clamping the catheter 13; a blocking piece is provided at the second end of the clamping member 3, and the clamping member 3 is an elastic member. When the first end of the clamping member 3 is pressed, the first end of the clamping member 3 can contact the blocking piece and slide along the blocking piece into the inner side of the second end of the clamping member 3. At this time, the blocking piece blocks the first end of the clamping member 3, and the clamping member 3 is in a clamped state.

[0032] Openings 12 are provided at both ends of the clamping member 3 , and a catheter 13 passes through the openings 12 . The clamping member 3 can move on the catheter 13 .

[0033] Please refer to Figure 3-4 In some embodiments, the positioning member is configured as a round tube 14, which is soft, and the sum of the length of the round tube 14 and the length of the front end portion of the protruding block of the clamping member 3 is one third of the length of the catheter 13; the above configuration ensures that the clamping member 3 is pushed toward the front end, and when the front end of the positioning member is against the first end of the catheter 13, the clamping position of the clamping member 3 is the upper third.

[0034] Example 2

[0035] On the basis of Example 1, this embodiment adds the following technical features: (the structure and position of the positioning member are specifically set as follows): A retention needle with an accurate clamping position, which includes a puncture needle 1, a needle seat 2, a catheter 13, a connector and a clamping member 3; the puncture needle 1 is arranged inside the needle seat 2, the puncture needle 1 and the needle seat 2 are detachably connected, the needle tip of the puncture needle 1 can extend out of the needle seat 2, the first end of the catheter 13 is fixedly connected to the side of the needle seat 2, the second end of the catheter 13 is fixedly connected to the connector, the needle seat 2, the catheter 13 and the interior of the connection are communicated, the clamping member 3 is arranged on the catheter 13, the clamping member 3 is movably connected to the catheter 13, a positioning member is arranged at one-third of the front end of the catheter 13, the clamping member 3 can be positioned to clamp the catheter 13 at the upper one-third, the clamping pipeline is standard, the probability of blockage or blood return of the retention needle can be reduced, and the patient's pain and the workload of medical staff are alleviated.

[0036] In some embodiments, the positioning member is configured as a raised ring, which is fixedly connected to the catheter 13. When clamping, the front end of the clamping member 3 is moved to the raised ring, and the clamping member 3 is pressed to clamp the catheter 13. At this time, the clamping member 3 is just clamped at one-third of the front end of the catheter 13.

[0037] The above-mentioned embodiments are only used to understand the present invention. It should be noted that, for those skilled in the art, several improvements can be made to the present invention without departing from the principle of the present invention, and these improvements will also fall within the scope of protection of the claims of the present invention.

Claims

1. An indwelling needle with accurate clamping position, characterized in that: It includes a puncture needle, a needle seat, a catheter, a joint and a clamping piece; the puncture needle is arranged inside the needle seat, the puncture needle is detachably connected to the needle seat, the needle tip of the puncture needle can extend out of the needle seat, the first end of the catheter is fixedly connected to the side of the needle seat, the second end of the catheter is fixedly connected to the joint, the needle seat, the catheter and the connection are communicated with each other, the clamping piece is arranged on the catheter, the clamping piece is movably connected to the catheter, and a positioning piece is arranged at the front end of the clamping piece.

2. The indwelling needle with accurate clamping position according to claim 1, characterized in that: A soft sleeve is arranged at the first end of the needle seat, and the soft sleeve is used to be retained in the patient's blood vessel. The inner diameter of the soft sleeve is the same as the diameter of the puncture needle. After the needle seat and the puncture needle cooperate, the puncture needle extends out of the soft sleeve.

3. The indwelling needle with accurate clamping position according to claim 2, characterized in that: The interior of the needle seat is hollow, and an isolation plug is arranged between the connection between the needle seat and the catheter and the second end of the needle seat.

4. The indwelling needle with accurate clamping position according to claim 3, characterized in that: The puncture needle is provided with a base, the shape of the base is cylindrical, and the diameter of the base is the same as that of the needle seat; the base of the puncture needle is provided with a needle wing, and the needle wing is in the shape of a sheet.

5. The indwelling needle with accurate clamping position according to claim 1, characterized in that: The joint comprises a first joint and a second joint; the first joint is cylindrical and hollow inside, the first end of the joint is connected to the conduit, and the second end of the joint is connected to the external air.

6. The indwelling needle with accurate clamping position according to claim 5, characterized in that: The second joint is fixedly connected to the side of the first joint, the second joint is cylindrical, and the interior is hollow, and the second joint, the first joint and the conduit are connected.

7. The indwelling needle with accurate clamping position according to claim 6, characterized in that: A heparin cap is disposed on both the first connector and the second connector.

8. The indwelling needle with accurate clamping position according to claim 1, characterized in that: The shape of the clamping member is C-shaped, the first end of the clamping member is tilted outward, and the inner side of the clamping member close to the first end and the opposite inner side are both provided with protruding blocks for clamping the catheter; the second end of the clamping member is provided with a blocking piece, and the clamping member is an elastic member. When the first end of the clamping member is pressed, the first end of the clamping member can contact the blocking piece and slide along the blocking piece into the inner side of the second end of the clamping member. At this time, the blocking piece blocks the first end of the clamping member, and the clamping member is in a clamped state.

9. The indwelling needle with accurate clamping position according to claim 8, characterized in that: Openings are arranged at both ends of the clamping member, and the catheter passes through the openings. The clamping member can move on the catheter.

10. The indwelling needle with accurate clamping position according to any one of claims 1 to 9, characterized in that: The positioning member is configured as a round tube, which is soft, and the sum of the length of the round tube and the length of the front end portion of the protruding block of the clamping member is one third of the length of the catheter.

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