CN213099875U - Automatic blood return device based on dialysis puncture needle - Google Patents
Automatic blood return device based on dialysis puncture needle Download PDFInfo
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- CN213099875U CN213099875U CN202021061984.1U CN202021061984U CN213099875U CN 213099875 U CN213099875 U CN 213099875U CN 202021061984 U CN202021061984 U CN 202021061984U CN 213099875 U CN213099875 U CN 213099875U
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- connecting pipe
- puncture needle
- dialysis
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Abstract
An automatic blood return device based on a dialysis puncture needle comprises the dialysis puncture needle, an injector and a support rod, wherein the dialysis puncture needle comprises a puncture needle head, a connecting pipe and a clamp; the injector comprises a needle cylinder and a piston, wherein a piston cavity is arranged in the needle cylinder, one end of the needle cylinder is connected with a connecting pipe, the piston cavity is communicated with the connecting pipe, one end of the piston is arranged in the piston cavity, a piston handle is arranged at the other end of the piston, one end of a supporting rod is abutted to one end, far away from the connecting pipe, of the needle cylinder, and the other end of the supporting rod is abutted to the piston handle. Block the connecting pipe through the clip centre gripping, pull the piston, produce the negative pressure state in making the piston chamber, medical personnel use pjncture needle syringe needle puncture to advance patient's skin after, blood can be inhaled rapidly in the connecting pipe under the effect of negative pressure, and a medical personnel just can accomplish the puncture operation to the patient, has reduced manpower consumption.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to an automatic blood return device based on a dialysis puncture needle.
Background
In the process of hemodialysis of a kidney disease patient, the conditions that the blood vessels of part of patients are not obvious and the puncture conditions are not good exist, and when the patient is punctured, the puncturing difficulty is higher, and at this time, two medical staff are needed to be matched for puncturing. That is, after the disinfection treatment of the puncture site of the patient using the cotton wool, a medical worker needs to perform a puncture operation on the patient using a dialysis puncture needle connected to the syringe, and after the needle of the dialysis puncture needle is inserted into the skin of the patient, in order to determine whether the needle has been inserted into the venous blood vessel of the patient, another medical worker needs to pull the syringe and judge whether the puncture is successful by observing the blood circulation condition in the dialysis puncture needle.
However, when a serious epidemic situation occurs, the number of patients in medical places such as hospitals and the like is increased sharply, the hands of medical staff are seriously insufficient, and at least two medical staff are needed when the patients are punctured each time, so that the consumption of the medical staff is increased, and the working efficiency of the medical staff is not high; moreover, on duty at night, when only one medical worker is on duty, the operation of double-person matched puncture cannot be realized, the puncture success rate is influenced, and the adverse effect of a patient when the puncture fails is increased.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need for an automatic blood return device based on a dialysis needle that can solve the above problems.
An automatic blood return device based on a dialysis puncture needle comprises: a dialysis puncture needle, an injector and a support rod,
the dialysis puncture needle comprises a puncture needle head, a connecting pipe and a clamp, the puncture needle head is connected with the connecting pipe, the clamp is movably arranged on the connecting pipe, and the clamp is used for clamping and blocking the connecting pipe;
the injector comprises a needle cylinder and a piston, wherein a piston cavity is arranged in the needle cylinder, one end of the needle cylinder is connected with the connecting pipe, the piston cavity is communicated with the connecting pipe, one end of the piston is arranged in the piston cavity, the other end of the piston is provided with a piston handle, one end of the supporting rod is abutted to one end, far away from the connecting pipe, of the needle cylinder, and the other end of the supporting rod is abutted to the piston handle.
In one embodiment, the clip is provided with a passage through which the connecting tube is disposed.
In one embodiment, the clip comprises a first clamping portion, a second clamping portion, a springback portion and a buckling portion, wherein the first clamping portion and the second clamping portion are arranged on two sides of the connecting pipe oppositely, one end of the first clamping portion is connected with one end of the second clamping portion through the springback portion, the other end of the first clamping portion is connected with the buckling portion, a clamping notch is formed in the buckling portion, one end, far away from the springback portion, of the second clamping portion is provided with a clamping protrusion, and the clamping protrusion is used for clamping the connecting pipe in the clamping notch.
In one embodiment, one end of the buckling part, which is far away from the first clamping part, is provided with a loosening protrusion, and a wear-resistant and anti-slip layer is arranged on the loosening protrusion.
In one embodiment, the piston further comprises a filling liquid, and the filling liquid is arranged in the connecting pipe and the piston cavity.
In one embodiment, the filling fluid is normal saline or dextrose injection.
In one embodiment, the supporting rod is a needle assembly, the needle assembly comprises an injection needle and an injection needle cap, the injection needle cap is provided with a protection cavity, and the injection needle is placed in the protection cavity.
In one embodiment, the support rod is detachably arranged between the needle cylinder and the piston handle, and the support rod is far away from the connecting pipe.
In one embodiment, the width of the piston shank is greater than the width of the piston.
In one embodiment, an end of the needle cylinder, which is away from the connecting tube, extends outward to form a force application portion, and an end of the support rod abuts against the force application portion.
The utility model has the advantages that: the connecting pipe is clamped and blocked by the clamp, the piston is pulled to generate a negative pressure state in the piston cavity, the supporting rods are respectively abutted against the needle cylinder and the piston handle, so that the piston can be fixed, the negative pressure in the piston cavity cannot suck the piston backwards, the negative pressure state in the piston cavity is stable, after a medical worker uses the puncture needle head to puncture the skin of a patient, one hand stabilizes the dialysis puncture needle, the other hand opens the clamp, the piston cavity is communicated with the connecting pipe and the puncture needle head, and if the puncture is successful, blood can be rapidly sucked into the connecting pipe under the action of the negative pressure, so that a medical worker can complete the puncture operation on the patient, the working efficiency is improved, and the labor consumption is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of the overall structure of an automatic blood return device based on a dialysis puncture needle of the present invention;
fig. 2 is a schematic structural view of a clip of an automatic blood return device based on a dialysis puncture needle of the present invention;
fig. 3 is a schematic structural view of another embodiment of the automatic blood return device based on the dialysis puncture needle of the present invention;
fig. 4 is a schematic structural diagram of a support rod of another embodiment of the automatic blood return device based on the dialysis puncture needle of the present invention.
Reference numerals:
10. an automatic blood return device; 100. a dialysis puncture needle; 200. an injector; 300. a support bar; 110. a puncture needle head; 120. a connecting pipe; 130. a clip; 210. a needle cylinder; 220. a piston; 211. a piston cavity; 221. a piston handle; 131. a first clamping portion; 132. a second clamping portion; 133. a spring back portion; 134. a fastening part; 1341. a clamping gap; 1321. a clamping bulge; 1342. the fastener loosening bulge; 400. filling liquid; 310. an injection needle; 320. an injection needle cap; 330. dialyzing needle dry vegetarian cap; 212. a force application part.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, an automatic blood return device 10 based on a dialysis puncture needle includes: a dialysis puncture needle 100, an injector 200 and a support rod 300,
the dialysis puncture needle 100 comprises a puncture needle head 110, a connecting pipe 120 and a clamp 130, wherein the puncture needle head 110 is connected with the connecting pipe 120, the clamp 130 is movably arranged on the connecting pipe 120, and the clamp 130 is used for clamping and blocking the connecting pipe 120; specifically, after the puncture needle 110 is punctured into the skin of the patient, blood will flow into the connecting tube 120 from the puncture needle 110, and the clip 130 can block the connecting tube 120 so as to block the connecting tube 120.
The injector 200 includes a syringe 210 and a piston 220, wherein a piston cavity 211 is provided in the syringe 210, one end of the syringe 210 is connected to the connection tube 120, the piston cavity 211 is communicated with the connection tube 120, one end of the piston 220 is disposed in the piston cavity 211, the other end of the piston 220 is provided with a piston handle 221, one end of the support rod 300 abuts against one end of the syringe 210 far away from the connection tube 120, and the other end of the support rod 300 abuts against the piston handle 221.
Specifically, the piston cavity 211 is communicated with the connection tube 120, when the clip 130 blocks the connection tube 120, and one end of the piston 220 is disposed in the piston cavity 211, the piston cavity 211 and the connection tube 120 are in a sealed state, when one end of the piston 220 is pulled, a negative pressure state is generated in the piston cavity 211, the support rod 300 is respectively abutted against the syringe 210 and the piston handle 221, under the action of the negative pressure, the piston handle 221 presses the support rod 300, so that the support rod 300 is fixed, and the support rod 300 can support the piston 220, so that the negative pressure in the piston cavity 211 can not suck the piston 220, so that the negative pressure state in the piston cavity 211 is stable, and after a medical staff pierces the skin of a patient by using the puncture needle 110, one hand stabilizes the dialysis puncture needle 100, the other hand opens the clamp 130, so that the piston cavity 211 is communicated with the connecting tube 120 and the puncture needle head 110, if the puncture is successful, blood is rapidly sucked into the connecting tube 120 under the action of negative pressure, and a medical care personnel can complete the puncture operation on the patient, thereby improving the working efficiency and reducing the labor consumption.
In one embodiment, the clip 130 is provided with a channel through which the connecting tube 120 is disposed.
Specifically, the connecting tube 120 is inserted into the channel, so that the position of the clip 130 on the connecting tube 120 can be adjusted, and it should be noted that a needle base is further disposed at one end of the connecting tube 120 close to the dialysis needle, the needle base is used for holding the dialysis needle by medical staff, a connecting member is further disposed at one end of the connecting tube 120 close to the injector 200, and the connecting member is used for connecting the injector 200, and since the clip 130 has a small size, in order to prevent the clip 130 from sliding out of the connecting tube 120 and being lost, the needle base and the connecting member at two ends of the connecting tube 120 should be able to be clamped outside the channel.
In an embodiment, referring to fig. 2, the clip 130 includes a first clamping portion 131, a second clamping portion 132, a resilient portion 133, and a fastening portion 134, the first clamping portion 131 and the second clamping portion 132 are oppositely disposed on two sides of the connecting pipe 120, one end of the first clamping portion 131 is connected to one end of the second clamping portion 132 through the resilient portion 133, the other end of the first clamping portion 131 is connected to the fastening portion 134, a clamping gap 1341 is disposed on the fastening portion 134, one end of the second clamping portion 132 away from the resilient portion 133 is provided with a clamping protrusion 1321, and the clamping protrusion 1321 is configured to be clamped in the clamping gap 1341.
Specifically, the first clamping portion 131 and the second clamping portion 132 are oppositely disposed at two sides of the connecting pipe 120, and the pipe walls at two opposite sides of the connecting pipe 120 are abutted to each other by pressing the first clamping portion 131 and the second clamping portion 132, so as to block the connecting pipe 120, the resilient portion 133 may be a plastic material having resilient performance, the resilient portion 133 can be pulled away by a distance between the first clamping portion 131 and the second clamping portion 132, so that the connecting pipe 120 can be released, and the connecting pipe 120 can be restored to a communicating state; after the connecting tube 120 is clamped and blocked by the clip 130, the clamping protrusion 1321 is clamped in the clamping gap 1341, that is, the buckling portion 134 can maintain the clamping state of the first clamping portion 131 and the second clamping portion 132, so that the connecting tube 120 and the piston cavity 211 are in a closed state, and the piston 220 is conveniently pulled subsequently, so that negative pressure is generated in the piston cavity 211.
Further, one end of the fastening portion 134, which is far away from the first clamping portion 131, is provided with a release protrusion 1342, and the release protrusion 1342 is provided with a wear-resistant and anti-slip layer.
Specifically, in order to facilitate the medical staff to release the clip 130, the medical staff uses fingers to open the release protrusion 1342, so that the blocking protrusion 1321 is separated from the blocking notch 1341, and the resilient portion 133 separates the first clamping portion 131 from the second clamping portion 132, so that the clip 130 releases the connecting tube 120, and thus, the medical staff can release the clip 130 with one hand, which is convenient to operate; in order to avoid the slipping of the hands of the medical staff, the clip 130 can be stably released, and the loosening projections 1342 are provided with a wear-resistant anti-slip layer.
In one embodiment, the piston assembly further comprises a filling liquid 400, and the filling liquid 400 is disposed in the connecting tube 120 and the piston cavity 211. Further, the filling fluid 400 is normal saline or glucose injection.
Specifically, the filling fluid 400 is sucked into the piston cavity 211 by pulling the piston 220, the dialysis needle 100 is connected to the syringe 200, the piston 220 is pushed into the piston cavity 211 to discharge air in the piston cavity 211 and the connection tube 120 so as to avoid injecting air into the blood vessel of the patient, the connection tube 120 is clamped and blocked by the clamp 130, the piston cavity 211 and the connection portion of the connection tube 120 with the piston cavity 211 are in a closed state, and a negative pressure state is generated in the piston cavity 211 by pulling the piston 220. It should be noted that the magnitude of the negative pressure in the piston cavity 211 is related to the blood returning effect in the connecting tube 120, and the magnitude of the negative pressure in the piston cavity 211 is related to the volume of the filling liquid 400 in the piston cavity 211 and the pulling stroke of the piston 220, in practical use, when the syringe 200 sucks 6 to 8ml of the filling liquid 400 and then pulls the piston 1 to 2cm, the blood returning effect in the connecting tube 120 is most obvious.
In one embodiment, referring to fig. 3 and 4, the supporting rod 300 is a needle assembly, the needle assembly includes a needle 310 and a needle cap 320, the needle cap 320 is provided with a protection cavity, and the needle 310 is disposed in the protection cavity.
In particular, in practice, the needle and the needle cap of the syringe 200 are discarded directly after being removed from the syringe 200, which results in a certain amount of waste. The needle assembly can be an injection needle 310 and an injection needle cap 320 of the injector 200, and a medical worker can directly apply the needle assembly on the injector 200 as the supporting rod 300 after pulling the needle assembly, so that the waste of the needle assembly is avoided; it should be noted that the needle assembly further includes a dialysis needle dry cap 330, and the dialysis needle dry cap 330 covers one end of the injection needle 310 away from the injection needle cap 320, so that the injection needle can be protected by the injection needle cap 320 and the dialysis needle dry cap 330 from being contaminated, and the support rod 300 can have a larger force-bearing area when supporting the piston handle 221 due to the larger area of the dialysis needle dry cap 330, and the supporting can be more stable. In addition, since the portion of the piston disposed inside the syringe is not solid, the gap between the piston and the wall of the syringe is large, and the needle assembly can easily fall into the syringe without the dialysis needle dry cap 330.
In one embodiment, the support rod 300 is detachably disposed between the needle cylinder 210 and the piston handle 221 away from the connection tube 120 to facilitate the installation of the support rod 300 and to prevent the syringe 200 from being too long for packaging.
In one embodiment, in order to facilitate the medical staff to push the piston 220, a finger pressing on the piston handle 221 can have a larger force-bearing area, and the width of the piston handle 221 is larger than that of the piston 220.
In one embodiment, in order to facilitate smooth exertion of force by fingers when a medical staff pushes and pulls the piston 220, an end of the needle cylinder 210 away from the connection tube 120 is provided with a force application part 212 extending outwards, in practical use, usually an index finger and a middle finger hook pull the force application part 212, a thumb is used to press the piston handle 221 to advance the piston 220, or a palm is used to clamp the piston handle 221 to pull the piston 220, and one end of the support rod 300 is abutted against the force application part 212; the force application part 212 enables one end of the syringe 210 far away from the connecting tube 120 to have a larger force bearing area, so that the supporting rod 300 is convenient to support the syringe 210, and the operation is more convenient.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above embodiments are only intended to illustrate some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. An automatic blood return device based on a dialysis puncture needle is characterized by comprising: a dialysis puncture needle, an injector and a support rod,
the dialysis puncture needle comprises a puncture needle head, a connecting pipe and a clamp, the puncture needle head is connected with the connecting pipe, the clamp is movably arranged on the connecting pipe, and the clamp is used for clamping and blocking the connecting pipe;
the injector comprises a needle cylinder and a piston, wherein a piston cavity is arranged in the needle cylinder, one end of the needle cylinder is connected with the connecting pipe, the piston cavity is communicated with the connecting pipe, one end of the piston is arranged in the piston cavity, the other end of the piston is provided with a piston handle, one end of the supporting rod is abutted to one end, far away from the connecting pipe, of the needle cylinder, and the other end of the supporting rod is abutted to the piston handle.
2. The automatic blood return device based on dialysis puncture needle according to claim 1, characterized in that the clip is provided with a channel through which the connection tube is arranged.
3. The automatic blood returning device based on the dialysis puncture needle according to claim 1, wherein the clip comprises a first clamping portion, a second clamping portion, a springback portion and a buckling portion, the first clamping portion and the second clamping portion are oppositely arranged on two sides of the connecting pipe, one end of the first clamping portion is connected with one end of the second clamping portion through the springback portion, the other end of the first clamping portion is connected with the buckling portion, a clamping gap is arranged on the buckling portion, a clamping protrusion is arranged at one end, away from the springback portion, of the second clamping portion, and the clamping protrusion is used for being clamped in the clamping gap.
4. The automatic blood return device based on the dialysis puncture needle is characterized in that one end, far away from the first clamping part, of the buckling part is provided with a loose-buckle bulge, and a wear-resistant and anti-slip layer is arranged on the loose-buckle bulge.
5. The automatic blood return device based on dialysis puncture needle according to claim 1, characterized by further comprising a filling fluid, wherein the filling fluid is disposed in the connecting tube and the piston cavity.
6. The automatic blood return device based on dialysis puncture needle according to claim 5, characterized in that the filling liquid is normal saline or glucose injection liquid.
7. The automatic blood return device based on the dialysis puncture needle is characterized in that the supporting rod is a needle head assembly, the needle head assembly comprises an injection needle head and an injection needle cap, the injection needle cap is provided with a protection cavity, and the injection needle head is placed in the protection cavity.
8. The automatic blood returning device based on dialysis puncture needle as claimed in claim 1, wherein the support rod is detachably disposed between the connection tube and the piston handle of the syringe.
9. The dialysis needle-based automatic blood return device of claim 1, wherein the width of the piston shaft is greater than the width of the piston.
10. The automatic blood returning device based on the dialysis puncture needle as claimed in claim 1, wherein an end of the needle cylinder away from the connection tube is extended outward to form a force applying portion, and an end of the support rod is abutted against the force applying portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021061984.1U CN213099875U (en) | 2020-06-11 | 2020-06-11 | Automatic blood return device based on dialysis puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021061984.1U CN213099875U (en) | 2020-06-11 | 2020-06-11 | Automatic blood return device based on dialysis puncture needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213099875U true CN213099875U (en) | 2021-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021061984.1U Active CN213099875U (en) | 2020-06-11 | 2020-06-11 | Automatic blood return device based on dialysis puncture needle |
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| Country | Link |
|---|---|
| CN (1) | CN213099875U (en) |
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2020
- 2020-06-11 CN CN202021061984.1U patent/CN213099875U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20220510 Address after: 516300 gaoqiaoshui, Huancheng South Road, Pingshan street, Huidong County, Huizhou City, Guangdong Province Patentee after: Huidong people's Hospital Address before: 516300 Huang Pai Yun Xin Lu, Huidong County, Huizhou City, Guangdong Province Patentee before: Zhou Yongxiang |