CN117618707A - Safe transfusion port needle - Google Patents
Safe transfusion port needle Download PDFInfo
- Publication number
- CN117618707A CN117618707A CN202311773940.XA CN202311773940A CN117618707A CN 117618707 A CN117618707 A CN 117618707A CN 202311773940 A CN202311773940 A CN 202311773940A CN 117618707 A CN117618707 A CN 117618707A
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- China
- Prior art keywords
- needle
- limiting
- main body
- puncture needle
- hole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005452 bending Methods 0.000 claims abstract description 3
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 238000001802 infusion Methods 0.000 claims description 9
- 230000002792 vascular Effects 0.000 description 3
- 208000015181 infectious disease Diseases 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001467 acupuncture Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000002512 chemotherapy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000001631 haemodialysis Methods 0.000 description 1
- 230000000322 hemodialysis Effects 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the field of medical equipment, and discloses a safe transfusion port needle, which comprises the following components: the main body part is provided with a protruding part on the front surface and a concave cavity on the back surface of the main body part, a limiting elastic piece is arranged in the concave cavity, the limiting elastic piece comprises a first limiting part and a second limiting part which is elastically bent relative to the first limiting part, and a through hole is formed in the first limiting part; the needle stand is provided with a puncture needle, and the tip end of the puncture needle is provided with a bending head part; the bottom cover is arranged on the back surface of the main body part, covers the concave cavity and is provided with a perforation. In a delivery state, the needle seat is connected with the main body part, and the puncture needle stretches into the concave cavity and penetrates out of the perforation through the through hole to expose the elbow part; in the needle withdrawing state, the needle seat is separated from the main body part, the elbow part is withdrawn into the concave cavity and limited by the through hole, so that the upper stroke of the puncture needle is limited, and the second limiting part is used for blocking the puncture hole, so that the lower stroke of the puncture needle is limited.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a safe transfusion harbor needle.
Background
The implanted venous transfusion port is a completely implanted vascular channel system, provides long-term venous vascular channels for patients, can provide safe and reliable venous channels for patients needing long-term and repeated venous treatment, reduces pain and risk of repeated intravenous puncture of the patients, is a port for venous treatment, and is called as a transfusion port. Because the transfusion port is safely buried in the body, no body surface wound exists, no catheter exposed part exists, and the transfusion port can not contact with the catheter when in use, is a channel device with the lowest infection rate at present, and can be used for a long time.
During treatment such as hemodialysis and venous chemotherapy, the internal vascular channel is communicated with the outside through the adaptive transfusion port needle penetrating into the rubber plug of the transfusion port. Because of the puncturing action, the transfusion port needle must have a bare needle point, and a doctor and patient have the risk of being punctured by the needle, blood infection is easy to be caused, and the risk is high.
The existing transfusion harbor needles have complex structures, large volumes, high cost and inconvenient use, and are hoped to optimally design the structures of the transfusion harbor needles.
Disclosure of Invention
Based on the above problems, the present invention aims to provide a safe transfusion port needle, which simplifies the structure of the transfusion port needle, reduces the cost, improves the use safety and reduces the needling risk.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a safety infusion port needle comprising:
the main body part is provided with a protruding part on the front surface and a concave cavity on the back surface of the main body part, a limiting elastic piece is arranged in the concave cavity, the limiting elastic piece comprises a first limiting part and a second limiting part which is elastically bent relative to the first limiting part, and a through hole is formed in the first limiting part;
the needle stand is provided with a puncture needle, and the tip end of the puncture needle is provided with a bending head part;
the bottom cover is arranged on the back surface of the main body part, covers the concave cavity and is provided with a perforation.
In a delivery state, the needle seat is connected with the main body part, and the puncture needle stretches into the concave cavity and penetrates out of the perforation through the through hole to expose the elbow part;
in the needle withdrawing state, the needle seat is separated from the main body part, the elbow part is withdrawn into the concave cavity and limited by the through hole, so that the upper stroke of the puncture needle is limited, and the second limiting part is used for blocking the puncture hole, so that the lower stroke of the puncture needle is limited.
Optionally, the surface of the puncture needle is further sleeved with a sleeve, the lower end of the sleeve is provided with a flaring portion, the flaring portion is located in an area between the first limiting portion and the second limiting portion, the outer diameter of the sleeve is smaller than the aperture of the through hole, and the outer diameter of the flaring portion is larger than the aperture of the through hole.
Optionally, a guide portion extending along the puncture needle is provided on the protruding portion, and the guide portion is used for preventing the elbow portion from being pulled out of the concave cavity.
Optionally, in the needle-withdrawing state, the limiting elastic sheet resets to be C-shaped; in a factory state, the puncture needle passes through the through hole of the first limiting part, and the second limiting part bends to store energy and is propped against the side wall of the puncture needle.
Optionally, a notch is arranged on the edge of the second limiting part, which abuts against the puncture needle.
Optionally, an infusion tube connected with the tail end of the puncture needle is arranged on the needle seat, the tail end of the puncture needle is bent towards the main body part, and the infusion tube is distributed along the plane of the main body part.
Optionally, a clearance opening is formed on the main body part corresponding to the infusion tube.
Optionally, the needle seat is buckled on the protruding part, a convex rib is arranged on the side surface of the protruding part, and a groove is arranged on the inner wall of the needle seat corresponding to the convex rib.
Optionally, the bottom is connected with main part buckle, and the back of main part is provided with bellied latch, has seted up the draw-in groove on the bottom corresponding to the latch.
Optionally, a sinking groove for giving the action space of the limiting elastic piece is formed on the bottom cover.
In summary, compared with the prior art, the safety transfusion port aims at the shape of the elbow part of the puncture needle, and the limiting elastic sheet is designed to limit the upward and downward travel of the puncture needle after needle withdrawal, so that the needle point is buried in the main body part, the needling risk is effectively reduced, the use safety and convenience are improved, the structure is simple, and the cost is low.
Drawings
FIG. 1 is a schematic view of a safety port needle according to an embodiment of the present invention;
FIG. 2 is an exploded view of a safety port needle according to an embodiment of the present invention;
FIG. 3 is a second exploded view of the structure of the safety port needle according to the present invention;
FIG. 4 is a cross-sectional view of a safety port needle in a factory configuration according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a safety port needle in an withdrawn needle configuration according to an embodiment of the present invention;
FIG. 6 is an enlarged view at A in FIG. 5;
fig. 7 is a schematic structural view of another limiting elastic piece in the safety transfusion harbor needle according to the embodiment of the present invention;
fig. 8 is a schematic diagram illustrating an operation process of the limiting spring of fig. 7.
In the figure:
1. a main body portion; 11. a boss; 12. a cavity; 13. a guide part; 14. a avoidance port; 15. a rib; 16. latch teeth;
2. a needle stand; 21. a groove;
3. a bottom cover; 31. perforating; 32. a clamping groove; 33. sinking grooves;
4. a limiting spring plate; 41. a first limit part; 42. a second limit part; 43. a through hole; 44. a notch;
4', a limiting spring piece; 41', a first limit part; 42', a second limiting part; 43', a third limit part; 44', a fourth limit part; 45' and a through hole;
5. a puncture needle; 51. a elbow part;
6. an infusion tube;
7. a sleeve; 71. a flared portion.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
Referring to fig. 1 to 3, the present preferred embodiment provides a safety transfusion harbor needle comprising a main body 1, a needle holder 2 and a bottom cover 3.
Wherein, the front surface of the main body part 1 is provided with a protruding part 11, and a concave cavity 12 is formed on the back surface of the main body part 1. The main body 1 is preferably straw hat-shaped, and the height of the protruding part 11 is reasonably designed to control the volume of the main body 1, so that the main body is convenient to attach to the body surface of a patient.
Further, a limiting elastic piece 4 is disposed in the cavity 12, where the limiting elastic piece 4 includes a first limiting portion 41 and a second limiting portion 42 elastically bent relative to the first limiting portion 41, and a through hole 43 is formed in the first limiting portion 41.
Wherein, be provided with pjncture needle 5 on the needle file 2, pjncture needle 5 can pass through-hole 43 just, and pjncture needle 5's pointed end is provided with elbow portion 51, and elbow portion 51 is the characteristic of current port needle, can effectively prevent thorn and leak bits, and needle elbow portion 51 and perpendicular portion contained angle are about 169, and the needle is convenient, and single hand can operate.
Wherein, the bottom cover 3 is arranged on the back surface of the main body part 1 and covers the concave cavity 12, and the bottom cover 3 is provided with a perforation 31.
As shown in fig. 4, in the factory state, the needle holder 2 is connected to the main body 1, and the puncture needle 5 is inserted into the cavity 12 and is passed out of the puncture hole 31 through the through hole 43 to expose the elbow part 51 so as to be inserted into the port.
As shown in fig. 5, in the withdrawn needle state, the needle holder 2 is separated from the main body 1, the elbow 51 is withdrawn into the cavity 12 and is limited by the through hole 43, thereby limiting the upward stroke of the puncture needle 5, and the second limiting part 42 seals the puncture hole 31, thereby limiting the downward stroke of the puncture needle 5, hiding the needle tip, and reducing the risk of needle penetration.
Preferably, the surface of the puncture needle 5 is further sleeved with a stainless steel sleeve 7, the lower end of the sleeve 7 is provided with a flaring portion 71, the flaring portion 71 is located in the area between the first limiting portion 41 and the second limiting portion 42, the outer diameter of the sleeve 7 is smaller than the aperture of the through hole 43, and the outer diameter of the flaring portion 71 is larger than the aperture of the through hole 43.
In the state of fig. 4, the second stopper 42 is held against the puncture needle 5, and the downward stroke of the flared portion 71 is restricted, so that the cannula 7 cannot be freely pulled out; in the state of fig. 5, the needle tip of the puncture needle 5 slides into the limiting elastic sheet 4, the elbow part 51 drives the sleeve 7 to move upwards until the upper travel of the expanding part 71 is limited by the through hole 43, so that the needle tip and the elbow part 51 cannot be separated from the concave cavity 12, and the puncture resistance is further improved, as shown in fig. 6 in detail.
In particular, the protruding portion 11 is provided with a guiding portion 13 extending along the puncture needle 5, the guiding portion 13 is used for preventing the elbow portion 51 from being pulled out of the cavity 12, and limit failure of the through hole 43 on the elbow portion 51 is avoided, and on the basis, even if the through hole 43 is not provided, the guiding portion 13 has a limit function.
Specifically, in the process of deformation of the limiting elastic sheet 4, in a factory state, the puncture needle 5 passes through the through hole 43 of the first limiting part 41, and the second limiting part 42 is bent to store energy and is abutted against the side wall of the puncture needle 5; and in the needle-withdrawing state, the limiting elastic sheet 4 is reset to be C-shaped.
Further, a notch 44 is formed in the edge, abutting against the puncture needle 5, of the second limiting portion 42, the side wall of the puncture needle 5 is embedded into the notch 44, on one hand, centering can be achieved, the needle body is guaranteed to be vertical, on the other hand, the jacking force on the needle body can be reduced, and in a normal state, the elastic force of the limiting elastic sheet 4 cannot be affected.
In particular, the needle stand 2 is provided with an infusion tube 6 connected with the tail end of the puncture needle 5, the tail end of the puncture needle 5 is bent towards the main body part 1, and the infusion tube 6 is arranged along the plane of the main body part 1 so as to be convenient for skin fixation.
Further, a clearance opening 14 is provided in the main body 1 corresponding to the infusion tube 6.
In particular, the needle seat 2 is buckled on the protruding part 11, the side surface of the protruding part 11 is provided with a convex rib 15, the inner wall of the needle seat 2 is provided with a groove 21 corresponding to the convex rib 15, and the needle seat 2 is conveniently separated from the main body part 1 by simply matching the convex rib 15 with the groove 21.
Specifically, the bottom cover 3 is in snap connection with the main body 1, the back of the main body 1 is provided with protruding latch 16, and the bottom cover 3 is provided with a slot 32 corresponding to the latch 16.
Further, the bottom cover 3 is provided with a sinking groove 33 for providing the action space of the limiting spring piece 4.
In addition, the present embodiment also provides a limiting spring 4' with a deformation structure, which can also satisfy the function of limiting the vertical travel of the puncture needle 5 here, as shown in fig. 7 and 8 in detail.
The limiting spring piece 4 ' comprises a first limiting part 41 ', wherein a second limiting part 42 ' extends from one side edge of the first limiting part 41 ', a third limiting part 43 ' and a fourth limiting part 44 ' extend from the other side edge of the first limiting part 41 ', and particularly, the third limiting part 43 ' can be directly formed by dividing the fourth limiting part 44 ', wherein a through hole 45 ' for a puncture needle 5 to pass through is formed in the first limiting part 41 '; at least the fourth limiting part 44 'can elastically bend relative to the first limiting part 41', and the fourth limiting part 44 'and the first limiting part 41' are Z-shaped in a normal state; the second limiting part 42 ' and the third limiting part 43 ' are abutted against the side wall of the concave cavity 12, so that the whole posture of the limiting elastic sheet 4 ' is stable, and the limiting function is ensured to be reliable.
In the factory state, the puncture needle 5 stretches into the concave cavity 12, passes through the through hole 45 'and then passes out of the through hole 31, and the end edge of the fourth limit part 44' keeps abutting against the surface of the puncture needle 5; in the withdrawn needle state, the elbow 51 of the puncture needle 5 is withdrawn into the cavity 12 and is limited by the through hole 45 ', thereby limiting the upward stroke of the puncture needle 5, and the fourth limiting part 44 ' is elastically reset, so that the end of the fourth limiting part 44 ' is along the plugging perforation 31, thereby limiting the downward stroke of the puncture needle 5, hiding the needle tip, and reducing the risk of needling.
To sum up, the above-mentioned safe transfusion port is directed against the elbow 51 shape of pjncture needle 5, has designed spacing shell fragment 4 to the pjncture needle 5 stroke spacing about after the withdrawal to bury the needle point in main part 1, effectively reduced the acupuncture risk, improved the safety in utilization, convenient operation, simple structure, low cost.
The above embodiments merely illustrate the basic principles and features of the present invention, and the present invention is not limited to the above embodiments, but can be variously changed and modified without departing from the spirit and scope of the present invention, which is within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A safety infusion port needle, comprising:
the novel anti-theft device comprises a main body part (1), wherein a protruding part (11) is arranged on the front surface of the main body part (1), a concave cavity (12) is formed in the back surface of the main body part (1), a limiting elastic piece (4) is arranged in the concave cavity (12), the limiting elastic piece (4) comprises a first limiting part (41) and a second limiting part (42) which is elastically bent relative to the first limiting part (41), and a through hole (43) is formed in the first limiting part (41);
the needle stand (2), the needle stand (2) is provided with a puncture needle (5), and the tip of the puncture needle (5) is provided with a bending head part (51);
the bottom cover (3), the bottom cover (3) is arranged on the back surface of the main body part (1) and seals the concave cavity (12), the bottom cover (3) is provided with a perforation (31),
in a factory state, the needle seat (2) is connected with the main body part (1), the puncture needle (5) stretches into the concave cavity (12) and penetrates through the through hole (43) to penetrate out of the perforation (31) to expose the elbow part (51);
in the needle withdrawing state, the needle seat (2) is separated from the main body part (1), the elbow part (51) is withdrawn into the concave cavity (12) and limited by the through hole (43), so that the upper stroke of the puncture needle (5) is limited, and the second limiting part (42) is used for blocking the perforation (31), so that the lower stroke of the puncture needle (5) is limited.
2. The safe transfusion harbor needle according to claim 1, wherein the surface of the puncture needle (5) is further sleeved with a sleeve (7), a flaring portion (71) is arranged at the lower end of the sleeve (7), the flaring portion (71) is positioned in an area between the first limiting portion (41) and the second limiting portion (42), the outer diameter of the sleeve (7) is smaller than the aperture of the through hole (43), and the outer diameter of the flaring portion (71) is larger than the aperture of the through hole (43).
3. Safety port needle according to claim 1, characterized in that the protruding part (11) is provided with a guiding part (13) extending along the puncture needle (5), the guiding part (13) being adapted to prevent the elbow part (51) from escaping from the cavity (12).
4. The safe transfusion harbor needle according to claim 1, wherein the limit elastic sheet (4) is reset to be C-shaped in the needle-withdrawing state; in a factory state, the puncture needle (5) passes through the through hole (43) of the first limiting part (41), and the second limiting part (42) is bent, stored energy and abutted against the side wall of the puncture needle (5).
5. The safety transfusion harbor needle according to claim 4, wherein a notch (44) is provided on an edge of the second stopper (42) abutting against the puncture needle (5).
6. The safe transfusion harbor needle according to claim 1, wherein the needle seat (2) is provided with a transfusion tube (6) connected with the tail end of the puncture needle (5), the tail end of the puncture needle (5) is bent towards the main body part (1), and the transfusion tube (6) is arranged along the plane of the main body part (1).
7. The safe transfusion harbor needle according to claim 6, wherein a clearance port (14) is formed on the main body portion (1) corresponding to the transfusion tube (6).
8. The safe transfusion harbor needle according to claim 1, wherein the needle seat (2) is buckled on the protruding part (11), a convex rib (15) is arranged on the side surface of the protruding part (11), and a groove (21) is arranged on the inner wall of the needle seat (2) corresponding to the convex rib (15).
9. The safe transfusion harbor needle according to claim 1, wherein the bottom cover (3) is in snap connection with the main body part (1), a convex latch (16) is arranged on the back surface of the main body part (1), and a clamping groove (32) is formed on the bottom cover (3) corresponding to the latch (16).
10. The safe transfusion harbor needle according to claim 1, wherein the bottom cover (3) is provided with a sinking groove (33) for giving the action space of the limit elastic sheet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311773940.XA CN117618707A (en) | 2023-12-21 | 2023-12-21 | Safe transfusion port needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311773940.XA CN117618707A (en) | 2023-12-21 | 2023-12-21 | Safe transfusion port needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117618707A true CN117618707A (en) | 2024-03-01 |
Family
ID=90016367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311773940.XA Pending CN117618707A (en) | 2023-12-21 | 2023-12-21 | Safe transfusion port needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117618707A (en) |
-
2023
- 2023-12-21 CN CN202311773940.XA patent/CN117618707A/en active Pending
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