Double-layer co-extrusion type high-pressure-resistant lucifugal radiography indwelling needle

Abstract

The utility model belongs to the technical field of medical equipment, and particularly relates to a double-layer co-extrusion type high-pressure-resistant lucifugal radiography indwelling needle which comprises a first tee joint. A needle holding handle is fixedly connected to the interior of the first three-way head, and a steel needle is fixedly connected to the interior of the needle holding handle; the end part of the first tee joint is sleeved with a protective sleeve; by means of the structural design that the high-pressure-resistant pipe which can bear the pressure of 300 PSi and has the diameter of 2 mm is arranged in the brown transparent pipe with the wall thickness of 0.5 mm, the high-pressure-resistant value of the remaining needle can be increased, meanwhile, the remaining needle has the light shielding function, and the situation that the remaining needle is prone to falling off in the using process can be effectively avoided. According to the high-pressure-resistant radiography indwelling needle, the situation that medicine in the catheter is prone to denaturation due to illumination is effectively avoided, and the problems that an existing high-pressure-resistant radiography indwelling needle is a single-layer tube and does not have the light shielding function, so that the effect of a contrast agent possibly declines or even disappears when the contrast agent encounters illumination in the injection process are effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, in particular to a double-layer co-extruded high-pressure resistant light-shielding contrast indwelling needle. Background Art

[0002] An indwelling needle, also known as a peripheral venous short catheter, is a medical device consisting of a soft catheter and a stainless steel puncture guide needle core. When in use, the needle core and the catheter are punctured into the blood vessel together. Once the catheter reaches the blood vessel, the needle core will be pulled out, leaving only the soft outer sleeve in the blood vessel for infusion therapy. An indwelling needle for contrast imaging is a medical device specifically used for radiological examinations and interventional radiological treatments. It can be used in angiography, CT scans, MRI and other examinations and treatments. By injecting contrast agents, doctors can observe and diagnose the condition more clearly.

[0003] During the angiography examination, contrast agents need to be injected into the human body and images are formed using the distribution of the contrast agents in the human body. However, existing high-pressure resistant contrast indwelling needles are all single-layer tubes and do not have the function of shielding from light. As a result, the effectiveness of the contrast agents may decrease or even disappear when exposed to light during the injection process.

[0004] To this end, the utility model provides a double-layer co-extruded high-pressure resistant light-shielding contrast indwelling needle. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the double-layer co-extruded high-pressure resistant light-proof angiography indwelling needle described in the utility model comprises a first three-way head; a needle holding handle is fixedly connected to the interior of the first three-way head, and a steel needle is fixedly connected to the interior of the needle holding handle; a protective sleeve is provided at the end of the first three-way head; the protective sleeve is arranged at the position corresponding to the steel needle; a brown transparent tube is connected to the top tube opening of the first three-way head; a high-pressure resistant tube is arranged inside the brown transparent tube; the other end of the brown transparent tube is connected to a second three-way head; this can effectively prevent the drug inside the catheter from being easily denatured by light during the use of the indwelling needle.

[0007] Preferably, a first fixing protrusion is fixedly connected to the side wall of the first three-way head; a first fixing groove is opened on the inner side wall of the protective sleeve; the first fixing protrusion and the first fixing groove are arranged correspondingly; the contact area between the protective sleeve and the first three-way head can be made larger, so that the protective sleeve is more stably mounted on the first three-way head.

[0008] Preferably, a plurality of anti-skid protrusions are fixedly connected to the side wall of the needle holding handle; the anti-skid protrusions are arranged on both side walls of the needle holding handle; the contact area between the needle holding handle and the operator's hand can be made larger, thereby making it more convenient to insert the steel needle.

[0009] Preferably, the brown transparent tube is provided with a one-handed clamp, which can effectively prevent the blood in the human body from flowing back.

[0010] Preferably, a fixing rod is fixedly connected to the top of the one-handed clip; a second fixing protrusion is fixedly connected to the side wall of the fixing rod; a fixing seat is fixedly connected to the top of the one-handed clip; a third fixing protrusion is fixedly connected to the inside of the fixing seat; a second fixing groove is opened on the side wall of the protective sleeve; the third fixing protrusion and the second fixing groove are arranged correspondingly; the protective sleeve can be fixed by engaging the second fixing protrusion with the first fixing groove, and the third fixing protrusion with the second fixing groove, which effectively avoids the protective sleeve from being easily lost.

[0011] Preferably, a push washer is fixed inside the one-hand clamp; the push washer is arranged at a position corresponding to the fixing rod and the fixing seat; so that the protective sleeve is more stable when placed inside the fixing rod and the fixing seat.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The double-layer co-extruded high-pressure resistant and light-proof contrast indwelling needle described in the utility model has a structural design of a high-pressure resistant tube with a diameter of 2mm and a pressure resistance of 300PSi arranged inside a brown transparent tube with a wall thickness of 0.5mm, thereby achieving the improvement of the high-pressure resistance value of the indwelling needle and making the indwelling needle have a light-proof function, which can effectively prevent the drug inside the catheter from being easily denatured by light during the use of the indwelling needle, and effectively solves the problem that the existing high-pressure resistant contrast indwelling needles are all single-layer tubes and do not have a light-proof function, resulting in the contrast agent being exposed to light during the injection process. The problem may decrease in efficacy or even disappearance of the efficacy.

[0014] 2. The double-layer co-extruded high-pressure resistant light-proof angiography indwelling needle described in the utility model, when the protective sleeve is sleeved on the steel needle, a first fixing protrusion is arranged on the side wall of the first three-way head, and a structural design in which the first fixing protrusion engages with the first fixing groove is realized, thereby achieving a function of increasing the contact area between the protective sleeve and the first three-way head, so that the protective sleeve is sleeved on the first three-way head more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a cross-sectional view of the brown transparent tube in the utility model;

[0018] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0019] Figure 4 It is a cross-sectional view of the protective sleeve in the utility model;

[0020] Figure 5 It is a partial structural schematic diagram of the single-hand clamp in the utility model.

[0021] In the figure: 1. first three-way connector; 2. needle holder; 3. steel needle; 4. protective sleeve; 5. brown transparent tube; 6. high-pressure resistant tube; 7. second three-way connector; 8. first fixing protrusion; 9. first fixing groove; 10. anti-slip protrusion; 11. one-hand clamp; 12. fixing rod; 13. second fixing protrusion; 14. fixing seat; 15. third fixing protrusion; 16. second fixing groove; 17. pushing gasket. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0023] Specific examples are given below.

[0024] like Figures 1 to 3 As shown, a double-layer co-extruded high-pressure resistant and light-proof angiography indwelling needle described in an embodiment of the utility model comprises a first three-way head 1; a needle holding handle 2 is fixedly connected to the interior of the first three-way head 1, and a steel needle 3 is fixedly connected to the interior of the needle holding handle 2; a protective sleeve 4 is sleeved on the end of the first three-way head 1; the protective sleeve 4 is arranged at the position corresponding to the steel needle 3; a brown transparent tube 5 is connected to the top tube mouth of the first three-way head 1; a high-pressure resistant tube 6 is arranged inside the brown transparent tube 5; the other end of the brown transparent tube 5 is connected to a second three-way head 7; during operation, during the use of the indwelling needle, by arranging a high-pressure resistant tube 6 with a pressure resistance of 300PSi and a diameter of 2mm inside the brown transparent tube 5 with a wall thickness of 0.5mm, the high-pressure resistance value of the indwelling needle can be improved, and at the same time, the indwelling needle has a light-proof effect, thereby effectively avoiding the situation in which the drug inside the catheter is easily denatured by light during the use of the indwelling needle.

[0025] like Figure 1 and Figure 4 As shown, a first fixing protrusion 8 is fixedly connected to the side wall of the first three-way head 1; a first fixing groove 9 is opened on the inner side wall of the protective sleeve 4; the first fixing protrusion 8 and the first fixing groove 9 are arranged correspondingly; during operation, when the protective sleeve 4 is sleeved on the steel needle 3, by arranging the first fixing protrusion 8 on the side wall of the first three-way head 1, and by the first fixing protrusion 8 engaging with the first fixing groove 9, the contact area between the protective sleeve 4 and the first three-way head 1 can be made larger, so that the protective sleeve 4 is sleeved on the first three-way head 1 more stably.

[0026] like Figure 1 and Figure 4 As shown, a plurality of anti-skid protrusions 10 are fixedly connected to the side walls of the needle holding handle 2; the anti-skid protrusions 10 are arranged on the side walls of both sides of the needle holding handle 2; during work, when the steel needle 3 needs to be inserted into the human body, the needle holding handle 2 needs to be held and the needle holding handle 2 is inserted. By arranging the anti-skid protrusions 10 on the side walls of the needle holding handle 2, the contact area between the needle holding handle 2 and the operator's hand can be made larger, thereby making it more convenient to insert the steel needle 3.

[0027] like Figure 1 As shown, a one-handed clamp 11 is sleeved on the brown transparent tube 5; during operation, after the indwelling needle is used, the one-handed clamp 11 is set on the brown transparent tube 5 to squeeze and seal the brown transparent tube 5, which can effectively prevent the blood in the human body from flowing back.

[0028] like Figure 1 and Figure 5 As shown, a fixing rod 12 is fixed to the top of the one-handed clamp 11; a second fixing protrusion 13 is fixed to the side wall of the fixing rod 12; a fixing seat 14 is fixed to the top of the one-handed clamp 11; a third fixing protrusion 15 is fixed to the inside of the fixing seat 14; a second fixing groove 16 is opened on the side wall of the protective sleeve 4; the third fixing protrusion 15 and the second fixing groove 16 are arranged correspondingly; during work, when the indwelling needle needs to be recovered, the protective sleeve 4 needs to be sleeved on the steel needle 3 to avoid hurting people. After the protective sleeve 4 is removed, the protective sleeve 4 can be inserted into the inside of the fixing seat 14, and then sleeved on the fixing rod 12. The second fixing protrusion 13 is engaged with the first fixing groove 9, and the third fixing protrusion 15 is engaged with the second fixing groove 16, so that the protective sleeve 4 can be fixed, which effectively avoids the situation where the protective sleeve 4 is easily lost.

[0029] like Figure 5As shown, a push gasket 17 is fixedly connected to the inside of the one-hand clamp 11; the push gasket 17 is arranged at a position corresponding to the fixed rod 12 and the fixed seat 14; when working, when the brown transparent tube 5 is squeezed and blocked by the one-hand clamp 11, the brown transparent tube 5 is squeezed by the push gasket 17, which can make the blocking effect of the brown transparent tube 5 better, and at the same time, the push gasket 17 is pushed by the brown transparent tube 5, which can make the push gasket 17 push the protective sleeve 4, so that the pressure between the protective sleeve 4 and the fixed rod 12 and the fixed seat 14 is greater, so that the protective sleeve 4 is placed inside the fixed rod 12 and the fixed seat 14 More stable.

[0030] During operation, during the use of the indwelling needle, a high-pressure resistant tube 6 with a diameter of 2 mm and a pressure resistance of 300 PSi is arranged inside the brown transparent tube 5 with a wall thickness of 0.5 mm, so that the high-pressure resistance value of the indwelling needle can be improved, and at the same time, the indwelling needle has a light-shielding effect, thereby effectively preventing the drug inside the catheter from being easily denatured by light during the use of the indwelling needle.

[0031] When the protective sleeve 4 is sleeved on the steel needle 3, by setting a first fixing protrusion 8 on the side wall of the first three-way head 1 and engaging the first fixing protrusion 8 with the first fixing groove 9, the contact area between the protective sleeve 4 and the first three-way head 1 can be made larger, so that the protective sleeve 4 is sleeved on the first three-way head 1 more stably.

[0032] When the steel needle 3 needs to be inserted into the human body, the needle holding handle 2 needs to be held and inserted. By providing an anti-slip protrusion 10 on the side wall of the needle holding handle 2, the contact area between the needle holding handle 2 and the operator's hand can be made larger, thereby making it more convenient to insert the steel needle 3.

[0033] After the indwelling needle is used, a single-hand clamp 11 is provided on the brown transparent tube 5 to squeeze and seal the brown transparent tube 5, thereby effectively preventing the blood in the human body from flowing back.

[0034] When the indwelling needle needs to be recovered, the protective sleeve 4 needs to be put on the steel needle 3 to avoid hurting people. After the protective sleeve 4 is removed, the protective sleeve 4 can be inserted into the interior of the fixing seat 14, and then put on the fixing rod 12. The protective sleeve 4 can be fixed by the engagement of the second fixing protrusion 13 with the first fixing groove 9, and the engagement of the third fixing protrusion 15 with the second fixing groove 16, which effectively avoids the protective sleeve 4 from being easily lost.

[0035] When the brown transparent tube 5 is squeezed and sealed by the single-handed clamp 11, the brown transparent tube 5 is squeezed by pushing the gasket 17, so that the sealing effect of the brown transparent tube 5 can be better. At the same time, the brown transparent tube 5 pushes the pushing gasket 17, which can make the pushing gasket 17 push the protective sleeve 4, so that the pressure between the protective sleeve 4 and the fixed rod 12 and the fixed seat 14 is greater, so that the protective sleeve 4 is placed inside the fixed rod 12 and the fixed seat 14 More stable.

[0036] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A double-layer co-extruded high-pressure resistant light-shielding angiography indwelling needle, characterized by: The invention comprises a first three-way connector (1); a needle holding handle (2) is fixedly connected to the interior of the first three-way connector (1), and a steel needle (3) is fixedly connected to the interior of the needle holding handle (2); a protective sleeve (4) is sleeved on the end of the first three-way connector (1); the protective sleeve (4) is arranged at the position corresponding to the steel needle (3); a brown transparent tube (5) is connected to the top pipe opening of the first three-way connector (1); a high-pressure resistant tube (6) is arranged inside the brown transparent tube (5); and the other end of the brown transparent tube (5) is connected to a second three-way connector (7).

2. A double-layer co-extruded high-pressure resistant light-shielding angiography indwelling needle according to claim 1, characterized in that: A first fixing protrusion (8) is fixedly connected to the side wall of the first three-way connector (1); a first fixing groove (9) is provided on the inner side wall of the protective sleeve (4); and the first fixing protrusion (8) and the first fixing groove (9) are arranged correspondingly.

3. A double-layer co-extruded high-pressure resistant light-shielding angiography indwelling needle according to claim 2, characterized in that: A plurality of anti-skid protrusions (10) are fixedly connected to the side wall of the needle holding handle (2); the anti-skid protrusions (10) are arranged on both side walls of the needle holding handle (2).

4. A double-layer co-extruded high-pressure resistant light-shielding angiography indwelling needle according to claim 3, characterized in that: The brown transparent tube (5) is sleeved with a one-handed clamp (11).

5. A double-layer co-extruded high-pressure resistant light-shielding angiography indwelling needle according to claim 4, characterized in that: The top of the one-handed clamp (11) is fixedly connected to a fixing rod (12); a second fixing protrusion (13) is fixedly connected to the side wall of the fixing rod (12); the top of the one-handed clamp (11) is fixedly connected to a fixing seat (14); a third fixing protrusion (15) is fixedly connected inside the fixing seat (14); a second fixing groove (16) is provided on the side wall of the protective sleeve (4); the third fixing protrusion (15) and the second fixing groove (16) are arranged correspondingly.

6. A double-layer co-extruded high-pressure resistant light-shielding angiography indwelling needle according to claim 5, characterized in that: A push washer (17) is fixedly connected inside the one-hand clamp (11); the push washer (17) is arranged at a position corresponding to the fixing rod (12) and the fixing seat (14).

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